38th week of 2020 patent applcation highlights part 71 |
Patent application number | Title | Published |
20200295634 | Shaft-Grounding Ring - The invention relates to a shaft-grounding ring which is used to remove induced voltages or electric charges from a first machine element ( | 2020-09-17 |
20200295635 | METHOD FOR PRODUCING AN ARRANGEMENT FOR A PLUG-IN COIL OF AN ELECTRICAL MACHINE, AND ARRANGEMENT - The invention relates to a method for producing an arrangement for a plug-in coil of an electrical machine, comprising the steps of: providing a core with slots; providing coil elements which are rod-shaped and have a proximal end and a distal end; inserting the coil elements into the slots from an end side of the core with the distal end at the front in such a way that the proximal end is arranged in the region of the end side and the distal end is arranged in the region of an opposite end side of the core or adjacent to it; and producing a respective jointed connection for the distal ends or the proximal ends of a first coil element and of a second coil element with an associated first connecting element on the opposite end side or the end side of the core, wherein, here, before joining between the respective joining partners, specifically the distal end or the proximal end of the first coil element and a first joining section of the first connecting element and also the distal end or the proximal end of the second coil element and a second joining section of the first connecting element, a connection is formed in each case, with which the relative position of the joining partners in relation to one another is defined. The invention further provides an arrangement for a plug-in coil of an electrical machine. | 2020-09-17 |
20200295636 | ROTOR ASSEMBLY - A rotor assembly for an electric machine includes a cylindrical rotor core, a set of posts extending radially outward from the rotor core defining a set of slots between adjacent posts, a set of windings formed by conductive wire wound in the set of slots having end turns extending axially beyond the rotor core, and a retention case overlying the end turns. | 2020-09-17 |
20200295637 | MANUFACTURING METHOD OF ROTOR - The manufacturing method of a rotor includes: a step of preparing a plate that is composed of an austenitic material and that has a projected portion and a part with a width in a rotational axis direction smaller than a width of the projected portion in the rotational axis direction; and a step of forming a welded portion across the projected portion of the plate and a rotation transmitting member by emitting an energy beam on at least a part of the projected portion to melt at least a part of the projected portion. | 2020-09-17 |
20200295638 | ASYNCHRONOUS MACHINE - For an asynchronous machine ( | 2020-09-17 |
20200295639 | INDUCTION MOTOR - An induction motor includes a stator generating a magnetic field and a rotor driven by the magnetic field. Conductive bars are inserted into slots in a core on a rotating shaft. A first and second rings respectively are connected to one and the other ends of the conductive bars. Gaps are formed between the core and the first or second ring. The conductive bars are connected to the first or second ring across the gaps from the slots. A section of each conductive bar perpendicular to a longitudinal direction thereof is a polygon having a first surface on the outer circumference side of the rotor, a second surface on the inner circumference side thereof, side surfaces between the first and second surfaces, and inclined surfaces between the first surface and the side surfaces in the gaps and inclined with respect to the first surface and the side surfaces. | 2020-09-17 |
20200295640 | POWER GENERATION WITH SPEED DEPENDENT MAGNETIC FIELD CONTROL - An apparatus for generating electrical power includes a rotor configured to be rotated about a longitudinal axis by fluid flow, the rotor including a plurality of permanent magnets, and a stator including conductor windings and a core. The core includes a conductor assembly having a plurality of conductors that extend axially through the core, the plurality of conductors electrically connected and short-circuited by a conductive connector at each end of the stator. The conductor assembly is configured to limit an induced output voltage to a selected maximum value, and the induced output voltage depends on a rotor speed. | 2020-09-17 |
20200295641 | TOROIDAL POLYPHASE ELECTRIC MACHINE - The disclosure relates to an electric machine having a rotor including a set of permanent magnets and a stator including a stator strip made of a soft ferromagnetic material, the strip supporting a coil body having a single discontinuity, the coil body supporting a plurality of wire coils so as to form a polyphase coil stator assembly of the toroidal type, wherein the strip has a single discontinuity and has at least one partial cut at regular intervals between two consecutive wire coils. | 2020-09-17 |
20200295642 | MOTOR UNIT AND MOTOR UNIT MANUFACTURING METHOD - A motor unit includes: a first rotating electric machine which includes a cylindrical first stator, a first rotor disposed coaxially with the first stator, a first shaft disposed coaxially with the first rotor, and a cylindrical first casing accommodating the first stator and the first rotor; a second rotating electric machine which includes a cylindrical second stator, a second rotor disposed coaxially with the second stator, a second shaft disposed coaxially with the second rotor, and a cylindrical second casing accommodating the second stator and the second rotor; a single drive device which is integrally fixed across a peripheral surface in a diameter direction of the first rotor in the first casing and a peripheral surface in a diameter direction of the second rotor in the second casing; and a surface-matching fixing portion which is fixed by a fixing member while an axial end surface of the first casing comes into contact with an axial end surface of the second casing. | 2020-09-17 |
20200295643 | ELECTRIC MOTOR UNIT - A rear-wheel drive device | 2020-09-17 |
20200295644 | APPARATUS AND METHOD FOR A ROTATION ANGLE DETECTOR - An apparatus for detecting a rotation angle, comprising: an annular stator around an axis of revolution Z, comprising: at least a first pole, a second pole, and a third pole arranged at constant azimuthal intervals around the axis of revolution of the annular stator, each of the poles comprising one or more electrical windings, and each of the poles comprising a flange that is a portion of a first surface of revolution around the annular stator's axis of revolution, the flange having an area distribution substantially that, within a coordinate system, of a sin(α) function from a low α bound of about 0 radians to a high α bound of about π radians. The apparatus may comprise a rotor that comprises sectors having the azimuthal extent of one flange and having different magnetic permeabilities. Methods for forming the apparatus and for obtaining measurements are also presented. | 2020-09-17 |
20200295645 | MOTOR AND WASHING MACHINE HAVING THE SAME - A motor of the invention includes a stator having a slot wound with a coil and a circular shaped housing accommodating the stator, and a rotor disposed on an inner surface of the housing and spaced apart from the slot and having a plurality of permanent magnets having the same number as magnetic poles and having different magnetic polarities. Each of the plurality of permanent magnets has a length corresponding to a first angle according to the number of magnetic poles. The plurality of permanent magnets are spaced apart from each other at a third angle according to the first angle and a second angle corresponding to the number of magnetic poles. The first, second, third angles of the motor refer to a center point of the housing as an angle reference point. The motor of an embodiment may be a motor provided in a washing machine. | 2020-09-17 |
20200295646 | LINEAR VIBRATION MOTOR - The present invention relates to the technical field of electronic products, and provides a linear vibration motor. The linear vibration motor comprises a motor housing, a stator, a vibrator, and two elastic supports for suspending the vibrator within the motor housing, for supporting the vibrator and for providing elastic restoring forces, wherein the elastic supports are located at two ends of the vibrator in a vibration direction respectively. Each of the elastic supports is made up of a plurality of elastic sheets whose one ends are fixedly connected in sequence, which are arranged side by side and which have C-shaped openings respectively. Each of the elastic supports comprises a first connection point fixedly connected to the vibrator and a second connection point fixedly connected to the inner wall of the motor housing. Therefore, the polarization phenomenon of a vibration block is reduced when the vibration feedback to a user's touch operation is realized, the noise is reduced, and the stability and the reliability of the entire linear vibration motor are improved. | 2020-09-17 |
20200295647 | SOUND VIBRATION ACTUATOR - A sound vibration actuator includes: a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part; a first vibration assembly disposed in the internal space of the casing; a second vibration assembly disposed between the first vibration assembly and the top casing part in such a manner as to be coupled to the top casing part; an elastic member whose one surface coupled to the first vibration assembly; and a third vibration assembly disposed between the first vibration assembly and the underside casing part in such a manner as to be coupled to the underside casing part. The sound vibration actuator includes at least three or more vibration assemblies disposed therein, thereby obtaining at least three or more resonance frequencies. | 2020-09-17 |
20200295648 | POLE-PIECE STRUCTURE FOR A MAGNETIC GEAR - The disclosure provides a pole-piece structure for a magnetic gear, comprising a plurality of laminate plates, wherein each plate comprises one or more apertures and an aperture in each plate aligns with an aperture in an adjacent plate to form one or more channels extending from a first end of the laminate plates to a second, opposite end of the laminate plates, wherein a resin cast is provided within each channel to hold the plurality of laminate plates together. | 2020-09-17 |
20200295649 | DISTRIBUTED CONTROL OF A MULTIPHASE POWER CONVERTER - Disclosed are switched-mode DC-DC power converter modules, SMPC controllers, and distributed-control multiphase SMPC systems. The controller comprises: a reference clock; a synchronisation input configured to receive a first synchronisation signal; a synchronisation output configured to transmit a second synchronisation signal; a control unit configured to control the operation of the SMPC module with a phase determined by the reference clock signal or the first synchronisation signal; a delay line configured to generate the second synchronisation signal by adding a delay to the selected one of the first synchronisation signal and the reference clock signal; a fault detection terminal; a memory configured to store a datum corresponding to a number N of SMPCs in the system; and a delay calculation module configured to calculate the delay in dependence on the datum and the signal at the fault-detection terminal. Associated methods are also disclosed. | 2020-09-17 |
20200295650 | CROSS CONDUCTION PROTECTION IN A VOLTAGE CONVERTER - An apparatus comprises: a voltage converter, a first switch, a second switch, and a controller. The voltage converter includes a combination of a primary winding and an auxiliary primary winding magnetically coupled to a secondary winding. The auxiliary primary winding is operable to generate a feedback voltage signal. The secondary winding is operable to receive energy from the primary winding to produce an output voltage to power a load. The controller controls switching operation of the first switch and the second switch to control a flow of current through the primary winding. The controller is further operable to: i) via a feedback voltage signal from the auxiliary primary winding, monitor a flow of current through a body diode of the second switch, and ii) control subsequent activation of the first switch to an ON state based on the monitored flow of current through the body diode of the second switch. | 2020-09-17 |
20200295651 | RIPPLE SHAPING FOR SWITCH-MODE POWER SUPPLY - A controller circuit for a switch-mode power supply (SMPS). The controller circuit is configured to generate, with a plurality of phases, a combined output current at a supply node to supply a load, determine a ripple shaping current complimentary to an estimated ripple at the combined output current using a number of active phases of the plurality of phases that generate the combined output current, and generate, with an auxiliary phase, the ripple shaping current at the supply node to reduce ripple occurring at the combined output current. | 2020-09-17 |
20200295652 | SNUBBER MODULE, SNUBBER APPARATUS AND POWER CONVERSION APPARATUS - A snubber module is provided, which constitutes a snubber apparatus attachable to a terminal of a semiconductor module. The snubber module includes: a positive-side capacitor, a first diode and a negative-side capacitor sequentially connected between a positive-side snubber terminal and a negative-side snubber terminal, the positive-side snubber terminal connectable to a positive-side terminal of the semiconductor module, and the negative-side snubber terminal connectable to a negative-side terminal of the semiconductor module; a first coupling terminal directly or indirectly connected to one node of either a first node between the positive-side capacitor and the first diode or a second node between the negative-side capacitor and the first diode; and a housing accommodating the positive-side capacitor, the negative-side capacitor and the first diode, and having provided therein the positive-side snubber terminal, the negative-side snubber terminal and the first coupling terminal in a manner enabling external connection. | 2020-09-17 |
20200295653 | CHARGE PUMP CIRCUIT WITH INTERNAL PRE-CHARGE CONFIGURATION - A charge pump circuit includes a charge pump configured to increase a voltage of an input signal to generate a voltage-boosted input signal, output the voltage-boosted input signal in response to a determination that the voltage-boosted input signal is greater than or equal to a threshold, and connect the charge pump to a supply voltage to pre-charge the charge pump in response to a determination that the voltage-boosted input signal is less than the threshold. The charge pump circuit includes bandgap reference generator configured to receive the voltage-boosted input signal and output, based on the voltage-boosted input signal, a voltage reference signal to a device that operates in accordance with the supply voltage. | 2020-09-17 |
20200295654 | Plug-and-play realization of the virtual infinite capacitors - Apparatus ( | 2020-09-17 |
20200295655 | SWITCHING REGULATOR AND METHOD OF OPERATING THE SAME - A switching regulator configured to generate a level-controlled output voltage from an input voltage, the switching regulator includes an inductor, an output capacitor configured to generate the level-controlled output voltage based on a current flowing through the inductor, at least two flying capacitors, and a plurality of switches configured to form electrical connections when the switching regulator operates in a first operating mode to, alternately charge each of the at least two flying capacitors using the input voltage, and provide a first boosted voltage to the inductor using a charged flying capacitor among the at least two flying capacitors. | 2020-09-17 |
20200295656 | POWER SUPPLY CIRCUIT AND CONTROL METHOD FOR POWER SUPPLY CIRCUIT - A power supply circuit according to an embodiment includes an driver, a control circuit, and a protection circuit. The driver includes a first transistor connected between a high-potential-side power supply and a node and a second transistor connected between a low-potential-side power supply and the node. The control circuit generates, according to an output voltage to a load connected to the node via a first low-pass filter circuit, first and second switching pulses for alternately switching the first and second transistors. The protection circuit outputs, when a voltage of the node via a second low-pass filter circuit exceeds a first reference voltage, an interruption signal for making at least the first transistor nonconductive. | 2020-09-17 |
20200295657 | Current Control for Buck-Boost Converters Using Conditional Offsets - A power converter includes an inductor, boost and buck circuits, and a controller circuit. The controller circuit is configured to determine a current through the inductor, generate a buck reference for comparison with the current to control operation of the buck circuit, calculate a variable offset based upon input and output potentials of the power converter and apply the variable offset to the buck reference to generate a boost reference, compare the boost reference with the current to control operation of the boost circuit, and, based upon comparisons of the current with the buck reference and the boost reference, respectively, operate the boost circuit and the buck circuit. | 2020-09-17 |
20200295658 | SWITCHING REGULATOR CONTROLLER CONFIGURATION PARAMETER OPTIMIZATION - A controller for a multi-phase switching regulator includes an error amplifier configured to generate an error signal indicative of the difference between a feedback voltage and a reference voltage; a loop calculator configured to generate control signals in response to the error signal to drive the power stages; and a dynamic phase management control circuit configured to generate a power efficiency value in response to the input current, the input voltage, the output current, and the output voltage. The dynamic phase management control circuit generates a phase selection signal indicating a first number of power stages to be activated in response to the first current signal and the power efficiency value. The phase selection signal is provided to the loop calculator to activate the first number of power stages. | 2020-09-17 |
20200295659 | DC POWER SUPPLY DEVICE - Provided is a DC power supply device If an electrical tool ( | 2020-09-17 |
20200295660 | POWER SYSTEM - A power system includes: a first power circuit having a first battery; a second power circuit having a second battery, wherein a used voltage range of the second battery with respect to a closed circuit voltage overlaps with the first battery, and a static voltage of the second battery is lower than the first battery; a voltage converter, converting a voltage between the first and the second power circuit; a power converter, converting power between the first power circuit and a driving motor; a current sensor; a passing current control section, operating the voltage converter so that the passing current becomes a target current; and a failure determining section. The failure determining section determines the voltage converter fails in a case where the difference is greater than a threshold and the passing current flows from the side of the first power circuit to the side of the second power circuit. | 2020-09-17 |
20200295661 | Control Circuit and Method for Switching Power Converters - A method includes converting a ramp voltage signal into a ramp current signal, a feedback signal into a feedback current signal, a reference signal into a reference current signal, and a control signal into a control current signal through a plurality of adjustable-gain units, and determining a turn-on of a high-side switch of a power converter through comparing a first control voltage and a second control voltage, wherein the first control voltage is generated based on a sum of the ramp current signal and the feedback current signal, and the second control voltage is generated based on a sum of the reference current signal and the control current signal. | 2020-09-17 |
20200295662 | APPARATUS AND METHOD FOR A DUAL OUTPUT RESONANT CONVERTER TO ENSURE FULL POWER RANGE FOR BOTH OUTPUTS - A power converter including: a dual output resonant converter including a first output, a second output, a common mode control input, and a differential mode control input, wherein a voltage/current at the first output and a voltage/current at the second output are controlled in response to a common mode control signal received at the common mode control input and a differential mode control signal received at the differential mode control input; and a dual output controller including a first error signal input, a second error signal input, a delta power signal input, a common mode control output, and a differential mode control output, wherein the dual output controller is configured to generate the common mode control signal and the differential mode control signal in response to a first error signal received at the first error signal input and a second error signal received at the second error signal input, wherein the first error signal is a function of the voltage/current at the first output and the second error signal is a function of the voltage/current at the second output, and wherein the common mode control signal is output from the common mode control output and the differential mode control signal is output from the differential mode control output, wherein the differential mode signal is limited by a differential mode signal limiting circuit. | 2020-09-17 |
20200295663 | QUASI-SINGLE STAGE POWER CONVERTER TOPOLOGY - A power converter includes an unfolder with an input connection with three terminals that connect to a three-phase AC power source and that has an output connection with a positive terminal, a negative terminal and a neutral terminal. The unfolder unfolds the bipolar AC voltages into two unipolar piece-wise sinusoidal DC voltages offset from each other by a half of a period. The power converter includes a three-input converter that produces a DC voltage output across output terminals. The three-input converter includes a positive input connection connected to the positive terminal, a negative input connection connected to the negative terminal and a neutral input connection connected to the neutral terminal. The three-input converter includes switches that selectively connect a voltage to the positive, negative and neutral input connections across a primary transformer winding of a transformer. A secondary transformer winding is connected to the output terminals through a rectification section. | 2020-09-17 |
20200295664 | DC-DC CONVERSION SYSTEM AND CONTROL METHOD OF DC-DC CONVERSION SYSTEM - A method for controlling a DC-DC conversion system having power conversion modules, input sensors, an output sensor and a controller, in which each of the power conversion modules has one or more conversion units. The output sensor detects an output signal of the DC-DC conversion system. The input sensors detect input voltage signals located at series-connected first sides of one or more conversion units respectively. The controller receives the output signal and the input voltage signals. The controller generates a first control signal according to the output signal and an output reference signal. The controller generates second control signals according to the input voltage signals and input reference voltage signals. The controller outputs a modulation signal corresponding to a corresponding one of the second control signals according to the first control signal and the corresponding second control signal, to control switches of a corresponding conversion unit. | 2020-09-17 |
20200295665 | POWER CONVERTER - A transformer includes a first core, a first primary coil, a first secondary coil, and a first insulating member. The first secondary coil includes a second conductor wound around the first core. The first insulating member covers the first secondary coil. The second conductor has a shape of a first polygon in a cross-section of the second conductor. A first corner of the first polygon has a first radius of curvature of 0.1 mm or more. The transformer thus has improved dielectric breakdown voltage and improved power efficiency. | 2020-09-17 |
20200295666 | BIAS CONTROL IN A VOLTAGE CONVERTER - A power supply as described herein includes a voltage converter, main controller, and a bias controller. The voltage converter including a primary stage and a secondary stage. The controller is operable to control regulation of an output voltage from the secondary stage based on a received feedback signal. As its name suggests, the output voltage from the secondary stage powers a load. During certain load conditions, the bias controller maintains (via novel biasing) a magnitude of a power supply voltage above a bias threshold value. More specifically, the bias controller is operable to prevent the power supply voltage from falling below the bias threshold value, preventing an under voltage lockout condition such that the controller is able to quickly continue conveyance of sufficient energy from the first stage to the second stage when the load increases a rate of consuming power provided by the output voltage. | 2020-09-17 |
20200295667 | POWER SUPPLY AND MEDICAL SYSTEM - A power supply includes a synchronous rectification-type rectifying/smoothing circuit to increase the conversion efficiency of an output voltage, avoids cost increases, and can change the output voltage and maximum output current. The power supply includes synchronous rectifiers connected to secondary windings of a transformer, smoothing circuits that smooth a voltage outputted from the synchronous rectifiers to produce an output voltage, switch drivers that correspond to the synchronous rectifiers and operate on one or both of the output voltage outputted from the smoothing circuits connected to the synchronous rectifiers and an AC voltage generated in the secondary windings to drive synchronous rectification switches of the synchronous rectifiers, and an output connector that is disposed following the smoothing circuits and connects the outputs of the smoothing circuits in a connection pattern selected out of serial and parallel. | 2020-09-17 |
20200295668 | Method for Operating a Power Converter - A method for operating a power converter is described. The power converter includes three input nodes each configured to receive a respective one of three input voltages, two DC link nodes configured to provide a DC link voltage, and a midpoint coupled to each DC link node. Three inductors are each connected to a respective one of the three input nodes. A rectifier bridge including three bridge legs are each coupled to a respective one of the three inputs through a respective one of the three inductors and connected to the respective one of the three inductors at a respective switch node. Each bridge leg is connected to the two DC link nodes and the midpoint, and includes at least one electronic switch. The power converter is operated in a reduced switching mode by deactivating at least one of the three bridge legs for a predefined time period. | 2020-09-17 |
20200295669 | RECTIFIER ARRANGEMENT - A rectifier arrangement ( | 2020-09-17 |
20200295670 | RECTIFIER ASSEMBLY - A rectifier assembly ( | 2020-09-17 |
20200295671 | Integrated Rectifier-Generator System for AC-to-DC Conversion - This disclosure relates AC-to-DC rectification and power flow control of electrical power generators. An integrated rectifier-generator AC-DC conversion circuit and system are disclosed for providing a regulated DC output. The integrated rectifier-generator AC-DC conversion circuit and system may include serially stacked passive and active rectifiers connected to multiple AC ports of an electrical power generator driven by mechanical energy captured by an energy harvester. The integrated rectifier-generator AC-DC conversion circuit and system may be configured to perform active ripple control and a maximum power tracking from the energy harvester by controlling a fraction of an overall power that flow through the active rectifier. | 2020-09-17 |
20200295672 | POWER CONVERSION DEVICE - A power conversion device includes an inverter, a smoothing capacitor, Y capacitors, and a power supply wiring that electrically connects a DC power supply and the inverter. The power supply wiring includes power terminal portions to which the DC power supply is connected, power terminal portions to which the inverter is connected, and capacitor terminal portions to which the Y capacitors are connected. In the power supply wiring, a parasitic inductance L | 2020-09-17 |
20200295673 | CURRENT SOURCE INVERTER WITH BI-DIRECTIONAL SWITCHES - A switching circuit includes a diode, a semiconductor switch, and a first bidirectional switch. The semiconductor switch is configured to conduct a first current from a second terminal to a third terminal of the semiconductor switch when a first on-state signal is sent to a first terminal of the semiconductor switch. An anode of the diode is connected to the second terminal of the semiconductor switch, and a cathode of the diode is connected to the third terminal of the semiconductor switch. The first bidirectional switch includes a first terminal, a second terminal connected to the anode of the diode, and a third terminal and is configured to conduct a second current from the second terminal to the third terminal or from the third terminal to the second terminal when a second on-state signal is sent to the first terminal of the first bidirectional switch. | 2020-09-17 |
20200295674 | POWER CONVERSION DEVICE - A power conversion device which reduces switching losses and stabilizes the output power. A switching-mode changer generates a reference signal for switching a mode of operation of the full-bridge circuit to a first switching mode or a second switching mode. In the first switching mode, an upper arm and a lower arm are switched synchronously, and a lower arm and an upper arm are non-conducting. In the second switching mode, the lower arm and the upper arm are switched synchronously, and the upper arm and the lower arm are non-conducting. The switching-mode changer adjusts the phase of the reference signal so that the reactive power is reduced. | 2020-09-17 |
20200295675 | Self-Powered Wireless Optical Communication Systems and Methods - An exemplary embodiment of the present invention provides an optical communication system. The optical communication system can comprise a self-powered sensor and an optical array. The self-powered sensor can be configured to receive a mechanical input and generate an electrical signal corresponding to the mechanical input. The optical array can be configured to receive the electrical signal and generate an optical output. The optical output can correspond to the mechanical input. | 2020-09-17 |
20200295676 | VIBRATION UNIT - In a vibration unit, a piezoelectric element enters an internal space of a through hole; and thereby, a second case member can be arranged proximate to a first case member. Therefore, a thickness of the vibration unit can be reduced, namely, a height of the vibration unit can be reduced. As described above, since the thickness of the vibration unit is reduced, a size of the vibration unit can be reduced. | 2020-09-17 |
20200295677 | Power Receiver Including Faraday Cage for Extracting Power from Electric Field Energy in the Earth - A circuit is operative to extract electromagnetic wave energy from the ground via a resonant transformer in which resonance is triggered by electrical charge arcing across a spark gap. A center tap of the primary winding of the transformer is capacitively coupled to an electrode buried in the ground. In-rush current from the ground electrode is converted to a useful form (e.g., one- or three-phase 60 Hz AC) by a power conversion circuit connected to the secondary winding of the resonant transformer. The ground electrode of the capacitor coupling the grounded electrode to the center tap primary winding is the shield of a Faraday cage enclosing the resonant transformer, spark gap, and a high-voltage power supply exciting the spark gap. | 2020-09-17 |
20200295678 | METHOD AND DEVICE FOR DETERMINING A ROTATION VARIABLE - A method for determining a rotation variable of a rotatably mounted rotor of a mechanically commutated electric motor, having a motor current path formed between two brush elements of the electric motor, and leading via the commutator bars contacted by the brush elements, and via coil windings of the rotor electrically connected to said commutator bars, wherein an oscillating input signal is fed into the motor current path and the rotation variable is determined with the aid of a ripple of a resultant output signal, said ripple being due to the mechanical commutation of the motor current path. | 2020-09-17 |
20200295679 | DETECTION OF THE TYPE OF AN ELECTRIC MOTOR FOR THE CONFIGURATION OF A VARIABLE SPEED DRIVE - A method for configuring a variable speed drive in charge of power supply of an electric motor. The method comprises the application of a sequence of motor voltages to the electric motor by the variable speed drive and the obtaining, in parallel, of measurements of motor current. The method then determines a feature of the electric motor on the basis of the measurements of motor current and determines a type of electric motor at least as a function of the feature. The variable speed drive is then set up on the basis of the determined type of electric motor. | 2020-09-17 |
20200295680 | POSITION-SENSORLESS CONTROL METHOD AND DEVICE FOR LONG-CABLE DRIVE PERMANENT MAGNET MOTOR - A position-sensorless control method and device for long-cable drive permanent magnet motors, including: adding a coupling circuit after boost transformers in the long-cable drive circuit of a permanent magnet motor; coupling three high frequency detection signals with different frequencies into a power supply cable and windings of the motor through three coupling transformers in the coupling circuit respectively; obtaining high frequency voltage components on primary windings of the coupling transformers by bandpass filters; obtaining the position signals according to relations among effective values of the high frequency voltage components; and finally realizing the position-sensorless control of the motor by a controller according to the obtained position signals. | 2020-09-17 |
20200295681 | Voltage Boosting Fan Motor Control - Systems and methods are provided and include an engine temperature sensor, an engine speed sensor, a switching arrangement, a radiator fan control module, and a pulse-width modulation module. The radiator fan control module calculates a required airflow of a radiator fan of the vehicle based on an engine temperature and calculates a required voltage to produce the required airflow of the radiator fan based on a size of the radiator fan. The radiator fan control module generates a control signal to increase a fan motor voltage of a radiator fan motor in response to the required voltage exceeding a battery voltage and generates the control signal to maintain a standard fan motor voltage of the radiator fan motor in response to the required voltage being less than the battery voltage. The pulse-width modulation module controls a switching operation of the at least one switch in accordance with the control signal. | 2020-09-17 |
20200295682 | MOTOR CONTROLLER WITH POWER FEEDBACK LOOP - A motor control system includes a motor; a motor and a motor control circuit coupled to the motor to provide power to the motor. The motor control circuit includes a power feedback loop having a power reference circuit to provide a reference power level and a power control circuit configured to provide a constant power level to the motor so that the motor operates with a substantially constant power output. The constant power level is proportional to the reference power level. Thus, the motor also provides substantially constant torque when the motor is at a constant speed. | 2020-09-17 |
20200295683 | DRIVING CIRCUIT AND DRIVING METHOD OF STEPPING MOTOR AND ELECTRONIC MACHINE USING THE SAME - The present invention provides a driving circuit capable of appropriately switching to a high-torque mode and a high-efficiency mode. The present invention relates to a driving circuit and a driving method for a stepping motor, and an electronic machine using the same. A back electromagnetic force detection circuit detects a counter EMF generated in a coil of a stepping motor. A revolution count detection circuit generates a revolution count detection signal representing the revolution count of the stepping motor. A determining circuit generates a determination signal that is asserted if the revolution count detection signal is stable across multiple consecutive cycles. A current value setting circuit generates a current setting value indicating a target value of a coil current. The current value setting circuit sets the current setting value to a predetermined value in a period in which the determination signal is negated, and adjusts the current setting value according to the counter EMF in a period in which the determination signal is asserted. A constant current chopper circuit generates a pulse modulation signal that modulates by way of having a detection value of a coil current approach close to a target value of the current setting value. | 2020-09-17 |
20200295684 | DRIVING CIRCUIT AND METHOD FOR STEPPING MOTOR - Excitation position is changed in accordance with an external clock. The state of a full bridge circuit including four transistors connected to a coil of a stepping motor, is controlled in accordance with the excitation position. At the time of transition from the excitation position at which coil current that flows in the coil is nonzero to the excitation position at which the coil current is zero, a switch is made to (i) the inverse state where the on or off state of each of the four transistors before the transition is inverted, and then a switch is made to (ii) the off state where all the four transistors are off. | 2020-09-17 |
20200295685 | BIPOLAR STEPPER MOTOR DRIVING DEVICE - A bipolar stepper motor driving device drives a stepper motor including stator coils having plural phases. The bipolar stepper motor driving device includes H-bridge circuits, a current detector, a control circuit, and a re-turning-on instruction unit. The H-bridge circuits are provided correspondingly to the phases of the respective stator coils. The current detector detects current flowing in the stator coils. The control circuit executes drive control of the H-bridge circuits. The re-turning-on instruction unit commands the control circuit to switch into a short-circuited state a stator coil which has shifted from an energized state to an off-state among the stator coils, on a condition that an absolute value of a reverse current detected by the current detector has changed from a value larger than a threshold current value to a value smaller than the threshold current value. | 2020-09-17 |
20200295686 | POSITIONING DEVICE FOR PRODUCING A ROTATIONAL POSITION SIGNAL AND AN EXCITATION DEVICE FOR PRODUCTING AN EXCITATION SIGNAL FOR A RESOLVER - A positioning device ( | 2020-09-17 |
20200295687 | DRIVING DEVICE, DRIVING SYSTEM, AND METHOD OF DRIVING ELECTRIC MOTOR - According to one embodiment, a driving device includes a voltage controller, a parameter setter, and a phase adjuster. The voltage controller causes an electric power converter to apply a drive voltage to the electric motor, the electric power converter converting input electric power to A/C electric power having desired voltage and frequency and supplying the converted electric power to an electric motor. The parameter setter sets at least one of a rotation speed of the electric motor and a parameter related to the rotation speed as speed information. The phase adjuster adjusts a phase of the drive voltage in such a manner that an index calculated based on a current flowing in the electric motor and the speed information set in the parameter setter becomes smaller. | 2020-09-17 |
20200295688 | MOTOR CONTROL DEVICE, METHOD OF ESTIMATING INITIAL POSITION OF MAGNETIC POLE OF ROTOR, AND IMAGE FORMING APPARATUS - In a motor control device that controls a sensorless-type motor, a controller estimates an initial magnetic pole position of a rotor of a motor by an inductive sensing scheme while sequentially setting a plurality of energization angles. At each of the set energization angles, the controller converts peak values of currents flowing through a plurality of phases of a stator winding into a first current component having an electrical angle that is equal to a corresponding one of the set energization angles and a second current component that is different in electrical angle by 90 degrees from the first current component, to correct the first current component based on the second current component. The controller estimates the initial magnetic pole position of the rotor based on the corrected first current component that is obtained at each of the set energization angles. | 2020-09-17 |
20200295689 | MOTOR CONTROL DEVICE, METHOD OF ESTIMATING INITIAL POSITION OF MAGNETIC POLE OF ROTOR, AND IMAGE FORMING APPARATUS - In a motor control device in one embodiment, an initial position estimation unit estimates an initial position of a magnetic pole of a rotor of a motor in an inductive sensing scheme. At each of energization angles, the initial position estimation unit multiplies a γ-axis current component Iγ corresponding to a peak value of a current flowing through a stator winding by each of a cosine value and a sine value of a correction angle obtained by correcting each of the energization angles. The initial position estimation unit estimates the initial position of the magnetic pole of the rotor based on a ratio between an integrated value of a multiplication result about the cosine value and an integrated value of a multiplication result about the sine value. | 2020-09-17 |
20200295690 | MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD - According to one embodiment, there is provided a motor control device including a detection circuit, a control circuit and a drive circuit. The detection circuit detects, in a direct current motor with a first coil and second coil, a first parameter related to an induced voltage generated in the first coil and a second parameter related to an induced voltage generated in the second coil. The control circuit changes, according to a difference between the first parameter and the second parameter, at least one of a first amplitude control value of a current of the first coil and a second amplitude control value of a current of the second coil. The drive circuit drives, according to the changed amplitude control value, the first coil and the second coil, respectively. | 2020-09-17 |
20200295691 | Method Of Controlling A Multi-Phase Electrical Machine - A method of controlling a multi-phase electrical machine by means of a power converter, wherein the method includes: a) controlling the electrical machine by utilizing vector space decomposition, VSD, wherein the controlling involves releasing control of the current of a harmonic while maintaining control of the current of the fundamental, b) measuring phase currents of the electrical machine while the control of the current of the harmonic is released, c) transforming the current measurements using VSD to obtain a current signature of the harmonic, and d) determining whether a fault is present in the electrical machine or the power converter based on a comparison of the current signature with a reference current signature of the harmonic. | 2020-09-17 |
20200295692 | MOTOR CONTROLLER, ACTIVE SHORT CIRCUIT THEREOF, AND METHOD FOR CONTROLLING ACTIVE SHORT VIA THE SAME - A motor controller, an active short circuit thereof, and a method for controlling active short via the same. An enabling signal is generated and outputted in response to determining that a vehicle is to enter a safe mode and a speed of a motor exceeds a threshold. Currents of a direct-axis and a quadrature-axis of the motor are adjusted to characteristic currents according to the enabling signal. An action flag signal and a control signal that corresponds to the enabling signal are generated and outputted in response to determining that the currents of the direct-axis and the quadrature-axis are adjusted to be the characteristic currents. A driving signal corresponding to the control signal is generated and outputted according to the action flag signal. A driving circuit safely controls a corresponding switch transistor in the inverter to be turned on based on the driving signal. | 2020-09-17 |
20200295693 | ESTIMATION OF THE AMPLITUDE OF A PERIODIC COMPONENT IN A MEASURED SIGNAL THROUGH A DELTA-SIGMA MODULATOR - A method for estimating amplitude of a periodic component in a measured signal, wherein the method comprises the following operations:
| 2020-09-17 |
20200295694 | ROTATING ELECTRIC MACHINE DEVICE AND ROTATING ELECTRIC MACHINE DEVICE CONTROL METHOD - A rotating electric machine apparatus including: a rotating electric machine (REM) including a rotor and a stator; an inverter device including an inverter circuit (IC) for driving the REM and an inverter control unit (ICU) for controlling the IC; a detector, in which a first antenna is connected to a resonance circuitry, which is mounted to the REM and has a resonance characteristic that changes depending on a change in a physical quantity; and a detection processor receiving a response radio wave indicating a detection result of the change in the physical quantity from the first antenna while transmitting a transmission radio wave at a set carrier frequency from a second antenna, and comparing the detection result and the set value, to thereby obtain an abnormal state in the REM. The ICU controls output of the IC in accordance with an abnormal state signal from the detection processor. | 2020-09-17 |
20200295695 | IDENTIFICATION METHOD TO IDENTIFY TYPE OF BRUSHLESS DC MOTOR, IDENTIFIER, AND BRUSHLESS DC MOTOR - A brushless DC motor identification method capable of identifying information on a brushless DC motor, particularly without performing any handshaking, includes supplying an input voltage from an identifier to a brushless DC motor including at least one resistor connected between a power supply line and a GND line, reading a resistance value of at least one resistor in a state where the inverter of the brushless DC motor is off, and identifying information on the brushless DC motor based on the read resistance value. | 2020-09-17 |
20200295696 | ROTARY ELECTRIC MACHINE CONTROL DEVICE - A rotary electric machine control device that performs drive control on an AC rotary electric machine using an inverter that converts power between DC power and AC power through pulse width modulation based on a carrier frequency, the rotary electric machine control device including: an electronic control unit that is configured to vary the carrier frequency such that the carrier frequency becomes higher as a rotational speed of the rotary electric machine becomes higher so that carrier sideband frequencies, which are frequencies of sideband waves that appear on higher and lower sides of a center frequency that is set in accordance with the carrier frequency, are not included in a frequency band prescribed in advance. | 2020-09-17 |
20200295697 | MOTOR CONTROL DEVICE - A motor control device generates three-phase drive currents having a phase difference by combining on-off actions of switching elements and supplies the three-phase drive currents to three-phase coils of a brushless motor. The motor control device includes a drive circuit including a bridge circuit that uses multiple switching elements and a control circuit that sets a control pulse, which causes each of the switching elements to perform on-off actions. The control circuit includes a control pulse generating unit that generates a control pulse. The control circuit further includes a set value retaining unit that retains a set value of an on-time length of the control pulse, which is referred to when the control pulse is generated in the control pulse generating unit. The control circuit further includes a set value changing unit that changes the set value retained in the set value retaining unit. | 2020-09-17 |
20200295698 | CONTROLLER FOR MOTOR - A controller for a motor includes a first processing circuit and a second processing circuit. The first processing circuit is configured to execute a first operation amount calculation process, an operation process, and an output process. The first operation amount calculation process is a process of calculating a first operation amount. The operation process is a process of operating a first drive circuit. The second processing circuit is configured to execute a second operation amount calculation process, a first use operation process, a second use operation process, and an initial value setting process. The second operation amount calculation process is a process of calculating a second operation amount. The initial value setting process is a process of setting an initial value of an integral element depending on a value of an integral element of the first operation amount calculation process. | 2020-09-17 |
20200295699 | CONTROLLER FOR MOTOR - A controller for a motor includes a first processing circuit and a second processing circuit configured to communicate with each other. The first processing circuit is configured to execute a first operation amount calculation process, an operation process, and an output process. The first operation amount calculation process is a process of calculating a first operation amount. The output process is a process of outputting the first operation amount to the second processing circuit. The second processing circuit is configured to execute a second operation amount calculation process, a first use operation process, a second use operation process, and an elimination process. | 2020-09-17 |
20200295700 | SOLAR PANEL FLAT ROOF MOUNTING APPARATUS AND METHOD - A roof-mounted solar energy apparatus including a mounting frame having a plurality of struts positioned in a first direction, the plurality of struts substantially parallel to one another, and a plurality of cross-member struts positioned in a second position that is substantially perpendicular to the plurality of struts positioned in the first direction. The plurality of struts attached to the crossmember struts. The apparatus also including a bracket having an end for engaging a strut or a cross-member strut and dimensioned to hold a solar panel. The solar panel or panels are held at an angle with respect to the flat roof or with respect to the struts. A method of forming a solar energy apparatus includes laying a plurality of struts in a first orientation, the plurality of struts being substantially parallel to one another, and attaching at least one crossmember to the plurality of struts to form a frame. | 2020-09-17 |
20200295701 | LOAD-BEARING STRUCTURE FOR SINGLE-AXIS FOR TRACKING PHOTOVOLTAIC PANELS - Disclosed is a load-bearing structure for single-axis for tracking photovoltaic panels including: first and second support beams for photovoltaic panels, having a longitudinal axis; crosspieces fixing the photovoltaic panels to the first and second beams; support poles for the first and second beam, secured to the ground and having a hinge allowing rotation of the beams about their axis; a linear actuator with first and second ends, the first being hinged to one of the support poles of the first beam; first and second cranks associated respectively with the first and second beams, and imparting a rotation movement thereto; and a connecting rod between the first and second cranks. The second end of the linear actuator is hinged to the connecting rod, allowing simultaneous and coordinated movement of the first and second cranks and the consequent simultaneous and coordinated rotation of the first and second beam of the structure. | 2020-09-17 |
20200295702 | DEVICE FOR TREATING SMOOTH SURFACES, IN PARTICULAR THE SURFACE OF PHOTOVOLTAIC AND SOLAR SYSTEMS - A device for treating smooth surfaces includes a treatment unit, a support structure with a pivoting support arm for positioning and holding the treatment unit and a load balancer for setting and automatically controlling the contact pressure acting on the surface to be treated by the treatment unit. The treatment unit in the form of a spraying device includes at least one support roller or support wheel for supporting the treatment unit against the surface to be treated. | 2020-09-17 |
20200295703 | SILICONE RUBBER FOAM BRUSH - A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material. | 2020-09-17 |
20200295704 | SUNLIGHT COLLECTION AND TRANSPORTATION SYSTEM - A solar collector energy conversion system has a solar collector apparatus adapted to collect sunlight at a collection location and direct it to one or more light transport guides for transporting the sunlight to a conversion location separate from the collection location, and a solar energy conversion apparatus arranged at the conversion location and adapted to receive sunlight transported by the light transport guides and to convert the transported sunlight to an alternative form of energy. | 2020-09-17 |
20200295705 | COATING MATERIAL, COVER GLASS, SOLAR CELL MODULE AND OUTER WALL MATERIAL FOR BUILDING - To provide a coating material capable of forming a solar cell module excellent in the weather resistance, the power generation efficiency and the design, a cover glass, a solar cell module comprising the cover glass, and an outer wall material for building. | 2020-09-17 |
20200295706 | MULTI-CHANNEL INVERTER FOR A PHOTOVOLTAIC APPARATUS - An inverter for a photovoltaic apparatus, which comprises a DC section, a DC/AC conversion section, an AC section and a control section. | 2020-09-17 |
20200295707 | CIRCUIT DEVICE, OSCILLATOR, ELECTRONIC APPARATUS, AND VEHICLE - Provided is a circuit device including: a first terminal electrically coupled to one end of a vibrator; a second terminal electrically coupled to the other end of the vibrator; an oscillation circuit electrically coupled to the first terminal and the second terminal, and oscillating the vibrator; a third terminal to which an external input signal is input; a switch circuit provided between a first wiring which couples the first terminal and the oscillation circuit with each other and the third terminal, and having a P-type transistor; and a control circuit outputting a regulated voltage, in which a power supply voltage is regulated, as a substrate voltage of the P-type transistor. | 2020-09-17 |
20200295708 | ENVELOPE TRACKING CIRCUIT AND RELATED APPARATUS - An envelope tracking (ET) circuit is provided. In examples discussed herein, the ET circuit can be configured to operate in a fifth-generation (5G) standalone (SA) mode and a 5G non-standalone (NSA) mode. In the SA mode, the ET circuit can enable a first pair of ET power amplifier circuits to amplify a 5G signal based on ET for concurrent transmission in a 5G band(s). In the NSA mode, the ET circuit can enable a second pair of ET power amplifier circuits to amplify an anchor signal and a 5G signal based on ET for concurrent transmission in an anchor band(s) and a 5G band(s), respectively. As such, the ET circuit may be provided in a 5G-enabled wireless communication device (e.g., a 5G-enabled smartphone) to help improve power amplifier linearity and efficiency in both 5G SA and NSA networks. | 2020-09-17 |
20200295709 | AMPLIFIER, METHOD OF MANUFACTURING AMPLIFIER, AND METHOD OF CORRECTING BIAS CURRENT - An amplifier includes at least one amplification circuit through one of which a bias current flows, a first memory that stores control information to specify the bias current to be fed through the one of the at least one amplification circuit, a digital control circuit that generates a bias current setting to set the bias current in accordance with the control information, a second memory that stores correction information to correct the bias current setting, a correction circuit that corrects the bias current setting in accordance with the correction information, and a bias circuit that determines the bias current in the one of the at least one amplification circuit in accordance with the bias current setting, which has been corrected. | 2020-09-17 |
20200295710 | ENVELOPE TRACKING AMPLIFIER APPARATUS - An envelope tracking (ET) amplifier apparatus is provided. In examples discussed herein, the ET amplifier apparatus can be configured to operate in a fifth-generation (5G) standalone (SA) mode and a 5G non-standalone (NSA) mode. In the SA mode, the ET amplifier apparatus can enable a first pair of amplifier circuits to amplifier a 5G signal for concurrent transmission in a 5G band(s). In the NSA mode, the ET amplifier apparatus can enable a second pair of amplifier circuits to amplify a non-5G anchor signal and a 5G signal for concurrent transmission in a non-5G anchor band(s) and a 5G band(s), respectively. As such, the ET circuit may be provided in a communication apparatus (e.g., a 5G-enabled smartphone) to help improve power amplifier linearity and efficiency in both 5G SA and NSA modes. | 2020-09-17 |
20200295711 | AMPLIFICATION APPARATUS AND TRANSMISSION APPARATUS - An amplification apparatus as the embodiment of the present invention includes a switching amplifier and an adjuster. The switching amplifier is driven on the basis of a control signal and amplifies an input signal to be amplified to generate an amplified signal. The adjuster adjusts at least one of the signal to be amplified and the control signal before being input into the switching amplifier. In addition, the adjuster adjusts so that timing when the control signal turns from LOW to HIGH aligns with timing when the signal to be amplified turns from LOW to HIGH, or aligns with timing when the signal to be amplified turns from HIGH to LOW. | 2020-09-17 |
20200295712 | Method and Device for Controlling Power Amplification - A method and network equipment for controlling power amplification are disclosed. The method for controlling power amplification includes outputting a voltage signal according to the state of network equipment. When the network equipment is in an idle state, at least one power amplifier transistor is switched off according to a voltage signal. | 2020-09-17 |
20200295713 | MULTI-MODE ENVELOPE TRACKING TARGET VOLTAGE CIRCUIT AND RELATED APPARATUS - A multi-mode envelope tracking (ET) target voltage circuit is provided. In an ET amplifier apparatus, an amplifier circuit is configured to amplify a radio frequency (RF) signal based on a time-variant ET voltage, which is generated based on a time-variant ET target voltage configured to track a time-variant power envelope of the RF signal. Notably, when the ET amplifier apparatus operates in a fifth-generation (5G) standalone (SA) or non-standalone (NSA) mode, the amplifier circuit may experience interference creating a reverse intermodulation product (rIMD) that can degrade efficiency and performance of the amplifier circuit. In examples discussed herein, the multi-mode ET target voltage circuit is configured to generate the ET target voltage based on a reduced slew rate to help suppress the rIMD at the amplifier circuit, thus making it possible to improve efficiency and performance of the ET amplifier apparatus in the SA and the NSA modes. | 2020-09-17 |
20200295714 | Amplifying device and amplifying system comprising the same - The present invention relates to an amplifying device and to an amplifying system comprising the same. According to the present invention, an amplifier line-up is presented comprising four amplifying units which is operable in a Doherty mode and an outphasing mode. By integration of Chireix compensating elements in the matching networks used in the amplifying units a bandwidth improvement can be obtained. | 2020-09-17 |
20200295715 | LINEAR ISOLATION AMPLIFIER AND METHOD FOR SELF-CALIBRATION THEREOF - An amplifier circuit may include an isolated amplifier circuit, disposed on a high voltage side of the amplifier circuit, and arranged to generate an isolated output signal. The amplifier circuit may include a first optocoupler circuit, disposed to receive the isolated output signal from the isolated amplifier circuit and an output amplifier circuit, disposed on a low voltage side of the amplifier circuit, and coupled to receive an optical output signal from the optocoupler circuit. The amplifier circuit may also include a calibration circuit, coupled to the output amplifier circuit, to generate a calibration initiation signal, and a second optocoupler circuit, disposed to receive the calibration initiation signal, and to output a switch signal, wherein a reference voltage is output to the isolated amplifier circuit. | 2020-09-17 |
20200295716 | RADIO FREQUENCY CIRCUIT - A radio frequency circuit has an amplifier that amplifies an input radio frequency signal, a power supply path that is disposed between an output node of the amplifier and a power supply node to which a DC bias voltage is supplied, and includes a first inductor and a second inductor connected in series, a first resonator that comprises a third inductor and a first capacitor connected in series to the third inductor, and resonates at a series resonance frequency, a second resonator that resonates at a series resonance frequency corresponding to an inductance of the first inductor, a capacitance of the second capacitor, and a resistance value of the first resistor, and a third resonator that comprises a third capacitor connected in parallel with the second inductor, and resonates at a parallel resonance frequency corresponding to a capacitance of the third capacitor and an inductance of the second inductor. | 2020-09-17 |
20200295717 | POWER AMPLIFICATION MODULE - Provided is a power amplification module that includes: a first transistor, a first signal being inputted to a base thereof; a second transistor, the first signal being inputted to a base thereof and a collector thereof being connected to a collector of the first transistor; a first resistor, a first bias current being supplied to one end thereof and another end thereof being connected to the base of the first transistor; a second resistor, one end thereof being connected to the one end of the first resistor and another end thereof being connected to the base of the second transistor; and a third resistor, a second bias current being supplied to one end thereof and another end thereof being connected to the base of the second transistor. | 2020-09-17 |
20200295718 | SWITCHABLE POWER AMPLIFICATION STRUCTURE - The present disclosure relates to a switchable power amplification structure including a first power amplifier (PA), a second PA, a front switching structure, and an end switching structure. The front switching structure is coupled to a radio frequency (RF) input port, and the end switching structure is coupled to an antenna port. Herein, the first PA and the second PA are parallel to each other, each of which is coupled between the front switching structure and the first end switching structure. The front switching structure is configured to selectively couple the first PA and the second PA to the RF input port, while the end switching structure is configured to selectively couple the first PA and the second PA to the first antenna port. | 2020-09-17 |
20200295719 | AMPLIFICATION APPARATUS AND TRANSMISSION APPARATUS - An amplification apparatus as the embodiment of the present invention includes a switching amplifier and an adjuster. The switching amplifier is driven on the basis of a control signal and amplifies an input signal to be amplified to generate an amplified signal. The adjuster adjusts the control signal before it is inputted into the switching amplifier. Specifically, the adjuster adjusts at least one of a pulse width of the control signal and a delay time of the control signal with respect to the signal to be amplified. | 2020-09-17 |
20200295720 | TRANS-IMPEDANCE AMPLIFIER (TIA) WITH A T-COIL FEEDBACK LOOP - A transimpedance amplifier includes a T-coil in its feedback loop to expand its bandwidth. The transimpedance amplifier includes an amplifier that converts and amplifies an input current signal to an intermediary voltage signal. One terminal of the T-coil is coupled to a resistor in the feedback loop which is coupled to the input of the amplifier. Another terminal of the T-coil is coupled to the output of an amplifier. The bridge point of the T-coil is coupled to the output terminal of the transimpedance amplifier which outputs an output voltage. The T-coil includes two inductors that are mutually coupled such that a current is induced to compensate for the leakage current caused by the parasitic capacitance of the transimpedance amplifier. | 2020-09-17 |
20200295721 | SEMICONDUCTOR CIRCUITRY - A semiconductor circuitry includes a first circuitry having a differential transistor pair and a pair of current sources connected in series to the differential transistor pair, a pair of transmission lines connected to the differential transistor pair at the opposite side to the current sources, and a second circuitry, connected to a node between the differential transistor pair and the current sources, and configured to test operations of at least the differential transistor pair and a latter-stage circuity connected to the transmission lines, in the state where the current outputs of the pair of current sources are stopped. | 2020-09-17 |
20200295722 | SEMICONDUCTOR DEVICE AND POTENTIAL MEASUREMENT APPARATUS - To provide a semiconductor device that makes it possible to reduce a cell circuit area and an increase in resolution. There is provided a semiconductor device including: a first region in which readout cells are arranged in an array form, the readout cells having one of input transistors included in a differential amplifier: and a second region in which reference cells are arranged in an array form, the reference cells having another input transistor included in the differential amplifier, the first region and the second region being separated from each other. | 2020-09-17 |
20200295723 | Deglitching Circuit and Method in Class-D Amplifier - In an embodiment, a class-D amplifier includes an input terminal configured to receive an input signal; a comparator having an input coupled to the input terminal; a deglitching circuit having an input coupled to an output of the comparator; and a driving circuit having an input coupled to an output of the deglitching circuit. The deglitching circuit includes a logic circuit coupled between the input of the deglitching circuit and the output of the deglitching circuit. The logic circuit is configured to receive a clock signal having the same frequency as the switching frequency of the class-D amplifier. | 2020-09-17 |
20200295724 | OPERATION PANEL STRUCTURE AND CONTROL METHOD AND CONTROL APPARATUS FOR MIXING SYSTEM - As viewed from the front of an operation panel, adjustment sections for individual input channels are positioned on the operation panel close to a human operator, and a display, a control section for setting an equalizer process, compressor process etc. for one selected channel and a signal delivery control section for setting signal delivery to mixing buses for the selected channel are positioned in a horizontal row remotely from the human operator. Operators in the delivery control section are varied in function in accordance with a selected operation mode. For example, in a mix send mode, a plurality of rotary operators are set to function as send level adjustment operators for the respective input channels so as to adjust send levels to a given mixing bus, while, in a mix master mode, the rotary operators are set to function as output gain adjustment operators for the respective mixing buses. | 2020-09-17 |
20200295725 | VOLUME SCALING AND SYNCHRONIZATION OF TONES - A system, method and storage medium for providing an emergency alert includes reading tone, using one or more processors, information and volume level information corresponding to an emergency sound generator from memory coupled to the one or more processors; and controlling, using the one or more processors, an output sound of the emergency sound generator based on the tone information and volume level information. The tone information includes data of frequency variation over a predetermined period, and the volume level information includes data of volume level variation over the predetermined period. | 2020-09-17 |
20200295726 | PIEZOELECTRIC QUARTZ CRYSTAL RESONATOR - The present invention provides a piezoelectric quartz crystal resonator. The piezoelectric quartz crystal resonator comprises a circuit board, a quartz crystal resonator and a thermistor, wherein the thermistor is configured to detect a temperature of the quartz crystal resonator, the thermistor and the quartz crystal resonator are arranged on the circuit board and interconnected with each other via electric wires arranged on the circuit board; the thermistor and the quartz crystal resonator are sealed independently from each other by thermoplastic material, and the thermoplastic material sealing the thermistor is in contact with the thermoplastic material sealing the quartz crystal resonator. | 2020-09-17 |
20200295727 | High Power, Double-Sided Thin Film Filter - A high power thin film filter is disclosed includes a substrate having a substrate thickness in a Z-direction between a first surface and a second surface. A thin film capacitor may be formed over the first surface. A thin film inductor may be spaced apart from the thin film capacitor by at least the thickness of the substrate. A via may be formed in the substrate that electrically connects the thin film capacitor and the thin film inductor. The via may include a polymeric composition. | 2020-09-17 |
20200295728 | CURRENT SENSOR AND MEASUREMENT DEVICE - A current sensor adapted to detect electric current flowing through an object to be measured includes a magnetic core through which the object to be measured is inserted, a coil wound around the magnetic core, a transmission line adapted to transmit electric current supplied from the coil, a terminating resistor adapted to convert electric current from a terminating end of the transmission line into voltage and outputs the voltage, and an impedance matching unit adapted to implement impedance matching between the coil and the terminating resistor. The impedance matching unit is adapted to raise, to a characteristic impedance of the transmission line, at least one of an impedance viewed from the terminating end of the transmission line toward the terminating resistor and an impedance viewed from a starting end of the transmission line toward the coil, in a band of frequency components involving amplitude attenuation among frequency components of the voltage output from the terminating resistor. | 2020-09-17 |
20200295729 | TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR WITH PARTIAL BRAGG REFLECTORS - Acoustic resonator devices and filters are disclosed. An acoustic resonator includes a substrate having a surface and a single-crystal piezoelectric plate having front and back surfaces, the back surface attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) is formed on the front surface of the single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The piezoelectric plate and the IDT are configured such that a radio frequency signal applied to the IDT excites a shear primary acoustic mode in the diaphragm. A back-side partial Bragg reflector is formed on the back surface of the diaphragm, and a front-side partial Bragg reflector is formed on the front surface of the diaphragm. | 2020-09-17 |
20200295730 | ACOUSTIC WAVE DEVICE - An acoustic wave device includes a support substrate including silicon, a piezoelectric layer provided directly or indirectly on the support substrate, and an interdigital transducer (IDT) electrode provided on the piezoelectric layer. When a wavelength defined by an electrode finger pitch of the IDT electrode is λ, a thickness of the piezoelectric layer is about 1λ or less. V | 2020-09-17 |
20200295731 | ELECTRONIC COMPONENT - An electronic component includes a support member, a piezoelectric film, and an interdigital transducer. The support member includes silicon as a primary component. The piezoelectric film is provided directly or indirectly on the support member. The interdigital transducer includes a plurality of electrode fingers. The plurality of electrode fingers are provided side by side separately from each other. The interdigital transducer is provided on the principal surface of the piezoelectric film. The film thickness of the piezoelectric film is about 3.5λ or less, where λ denotes the wavelength of an acoustic wave determined by the electrode finger pitch of the interdigital transducer. In the support member, the high-impurity-concentration region is further from the piezoelectric film than the low-impurity-concentration region. | 2020-09-17 |
20200295732 | RESONANCE DEVICE AND METHOD FOR PRODUCING RESONANCE DEVICE - A resonance device that includes a MEMS substrate including a resonator, an upper cover, and a bonding portion that bonds the MEMS substrate to the upper cover to seal a vibration space of the resonator. The bonding portion includes a eutectic layer composed of a eutectic alloy of germanium and a metal mainly containing aluminum, a first titanium (Ti) layer, a first aluminum oxide film, and a first conductive layer consecutively arranged from the MEMS substrate to the upper cover. | 2020-09-17 |
20200295733 | MICROWAVE DUPLEXER USING COUPLED INDUCTORS TO IMPROVE ISOLATION - A duplexer includes a duplexer package having a transmit terminal, an antenna terminal, a receive terminal and at least one package ground terminal, a transmit filter disposed within the duplexer package, and a receive filter disposed within the duplexer package. Coupled first and second inductors, the first inductor connected to the transmit filter and the second inductor connected to the receive filter, are configured to cancel, at least in part, RF signal leakage between the transmit filter and the receive filter. | 2020-09-17 |