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Control Systems and Methods for Power Amplifiers Operating in Envelope
Control systems and methods for power amplifiers operating in envelope tracking mode are presented. A set of corresponding functions and modules are described...
INPUT DRIVER FOR POWER AMPLIFIER AND TRANSMITTER
An input driver includes a power converting unit and a level adjusting unit. The power converting unit is configured to generate a first power and a second...
POWER AMPLIFICATION SYSTEM WITH VARIABLE SUPPLY VOLTAGE
Power amplification system with variable supply voltage. A power amplification system can include a power amplifier and a boost converter configured to provide...
MULTI-BAND DEVICE HAVING MULTIPLE MINIATURIZED SINGLE-BAND POWER
Multi-band device having multiple miniaturized single-band power amplifiers. In some embodiments, a power amplifier die can include a semiconductor substrate,...
POWER AMPLIFICATION SYSTEM WITH SHARED COMMON BASE BIASING
Power amplification system with shared common base biasing. A power amplification system can include a plurality of cascode amplifier sections. Each one of the...
CASCODE AMPLIFIER SEGMENTATION FOR ENHANCED THERMAL RUGGEDNESS
According to some implementation, a power amplifier includes a plurality of pairs of transistors, each pair of transistors including a common emitter...
Radio Receiver for Carrier Aggregation
A radio receiver circuit configurable to operate in a carrier-aggregation (CA) mode and in a non-CA mode is disclosed. It comprises a first receive path...
FULLY I/Q BALANCED QUADRATURE RADIO FREQUENCY MIXER WITH LOW NOISE AND LOW
A method, an apparatus, and a system product for mixing radio frequency signals are provided. In one aspect, the apparatus is configured to perform switching...
Electronic Circuits Using Coupled Multi-Inductors
Coupled multi-inductors and their applications. An apparatus includes several circuit stages. Each circuit stage includes an inductive element that overlaps...
OSCILLATION CIRCUIT, OSCILLATOR, ELECTRONIC APPARATUS AND MOVING OBJECT
An oscillation circuit includes a circuit for oscillation that oscillates a resonator, an output circuit that has a signal, output from the circuit for...
OSCILLATION CIRCUIT, ELECTRONIC APPARATUS, MOVING OBJECT, AND METHOD OF
ADJUSTING OSCILLATION CIRCUIT
An oscillation circuit includes a circuit for oscillation, a first frequency adjustment circuit for adjusting a frequency, and a first terminal. The...
RESONATOR, RESONATOR DEVICE, OSCILLATOR, ELECTRONIC APPARATUS, AND MOVING
A resonator includes: a resonator element including a quartz crystal substrate that includes a first area performing a thickness-shear vibration and a second...
MULTIPLE FREQUENCY LC VOLTAGE CONTROLLED OSCILLATOR SCHEME
A circuit includes at least two LC voltage controlled oscillators (LCVCOs). Each LCVCO includes a switch to selectively turn on or off the LCVCO. One selected...
STRESS COMPENSATED OSCILLATOR CIRCUITRY AND INTEGRATED CIRCUIT USING THE
A stress compensated oscillator circuitry comprises a sensor arrangement for providing a sensor output signal S.sub.Sensor, wherein the sensor output signal...
METHOD OF DISCHARGING AT LEAST ONE ELECTRICAL ENERGY STORAGE UNIT, IN
PARTICULAR A CAPACITOR, OF AN ELECTRICAL...
Method of discharging at least one electrical energy storage unit of an electrical circuit (1), the electrical circuit (1) furthermore comprising a switching...
MOTOR CONTROL APPARATUS HAVING A FUNCTION OF DETECTING MISWIRING
A motor control apparatus according to one aspect of the present invention is configured to be connected to a motor by a wiring line, and includes: a motor...
A controller in an electric power steering system controls motor that assists a steering operation of a steering wheel by a driver by generating an assist...
A controller controls a rotating electric machine that has a plurality of winding wire groups, by using an instruction calculator, a temperature calculator, a...
POWER CONVERSION DEVICE, MOTOR DRIVING DEVICE INCLUDING POWER CONVERSION
DEVICE, BLOWER AND COMPRESSOR...
A power conversion device includes an inverter configured by arms including phase upper-arm switching elements and phase lower-arm switching elements, a...
Driving Apparatus For Switching Element
A power conversion circuit is mounted in a vehicle and controls an output torque of the rotating machine based on a requested command torque. A driving...
RELUCTANCE MOTOR DRIVE CIRCUIT AND RELUCTANCE MOTOR SYSTEM
A drive circuit is provided for a reluctance motor including a stator having multiple salient poles and a rotor having multiple salient poles, and the drive...
ELECTRIC WORKING MACHINE
An electric working machine according to one aspect of the present disclosure includes a motor, a current detector, a voltage detector, and a load state...
MOTOR DRIVING METHOD, MOTOR DRIVING DEVICE, AND HARD DISK DEVICE
The present invention is intended to reduce noise and vibration of a motor. A first duty correction circuit generates a first corrected duty instruction value...
METHOD AND APPARATUS FOR DETECTING ALTERNATOR RECTIFIER DIODE SHORT FAULT
Methods for detecting a short fault of an alternator rectifier electronic component include sampling a field winding voltage or current signal of an...
Digital Motor Control Unit
Control of a plurality of electronically commutated motors is effected using a control unit and a power unit. The power unit enables the provision of...
MOTOR CONTROL DEVICE
This disclosure discloses a motor control device configured to control a motor. The motor control device includes an inverter part, a gate driving circuit, a...
Control System for an Electric Motor
A control system for an electric motor comprising a stator having a plurality of stator coils and a rotor movable along the stator comprises a position...
SINGLE PHASE MOTOR DRIVE CIRCUIT AND A METHOD OF DRIVING A SINGLE PHASE
A single phase motor drive circuit for driving a single phase motor, comprising: a timer unit for receiving a sensor signal indicative of an angular position...
Device for Monitoring Synchronous Signals of a Motor
A device for monitoring synchronous signals of a motor includes a detection module and a processor. The detection module includes a rotational speed detector...
MOTOR CONTROL DEVICE, MOTOR CONTROL SYSTEM, AND CONTROL METHOD FOR MOTOR
A motor control device includes DC voltage circuitry which obtains a DC voltage, an inverter which converts the DC voltage obtained by the DC voltage circuitry...
POWER CONTROL DEVICE
A power control device including a first detection device that detects that a knob provided on a room interior side of a door has turned to a first turn...
THERMAL ENERGY HARVESTING DEVICE
A first closed enclosure defines a cavity having an inner dimension smaller than 5 mm. At least one second resiliently deformable closed enclosure is connected...
VIBRATION MOTOR CONTROLLER, LENS APPARATUS INCLUDING THE SAME, AND IMAGE
PICKUP APPARATUS INCLUDING THE SAME
A vibration motor controller configured to cause a vibrating member in which a vibration is excited based on two frequency signals having a phase difference to...
LIFTING SYSTEM, METHOD FOR ELECTRICAL TESTING, VIBRATION DAMPER, AND
The invention relates to a lifting system, comprising a piezoelectric actuator, a support, and a hydraulic stroke multiplier having an input and an output...
PIEZOELECTRIC DRIVE DEVICE, ROBOT, AND DRIVE METHOD THEREOF
A piezoelectric drive device includes a vibrating plate and multiple piezoelectric drive units that are disposed in the vibrating plate, and that respectively...
GRAPHENE SHEET AND NANOMECHANICAL RESONATOR
A graphene sheet is provided. The graphene sheet includes a carbon lattice and a spatial distribution of defects in the carbon lattice. The spatial...
RESONANT INVERTER AND RESONANCE POWER SUPPLY APPARATUS
A resonant inverter includes first and second switches, first and second capacitive elements, a first coil, a second coil, a third coil, and a third capacitive...
BOOST CONTROL APPARATUS
A boost control apparatus is provided with: a controlling device configured (i) to perform first duty control by a first control parameter if output current...
A current converter circuit arrangement, and a current converter device embodying such arrangement, having positive and negative potential voltage connections,...
RESONANT TYPE HIGH FREQUENCY POWER SUPPLY DEVICE AND SWITCHING CIRCUIT FOR
RESONANT TYPE HIGH FREQUENCY POWER...
Disclosed is a resonant type high frequency power supply device provided with a power element that performs a switching operation, the power supply device...
RESONANT TYPE HIGH FREQUENCY POWER SUPPLY DEVICE
A resonant type high frequency power supply device provided with a power semiconductor element that performs a switching operation at a high frequency...
INVERTER APPARATUS INCLUDING CONTROL CIRCUIT EMPLOYING TWO-PHASE
MODULATION CONTROL, AND INTERCONNECTION...
A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching...
SMALL POWER HARVESTING METHODS FOR POWERING CONTROL DEVICES USING A SINGLE
A power harvesting circuit includes a first switch connected in series between an AC source and a load, a switch control circuit connected to the switch and...
POWER CONVERSION APPARATUS
A power converter of a power conversion apparatus includes any one or more of a functional module in which a rectifier unit rectifying an externally supplied...
POWER CONVERSION APPARATUS
A power conversion apparatus includes a capacitor and a heat dissipation member for cooling the capacitor. The capacitor and the heat dissipation member are...
POWER CONVERSION SYSTEM WITH RE-CONFIGURABLE POWER FLOW
According to some aspects, a power conversion system for converting electrical power produced by a generator is provided. The power conversion system comprises...
CONVERTERS FOR WIND TURBINE GENERATORS
A wind turbine generator 1 supplies three-phase a.c. current of variable voltage and variable frequency to two pairs of rectifiers 4a, 4b and 4c, 4d which...
POWER SUPPLY DEVICE
A power supply device includes: a rectifier having an input terminal connected to one end of a switching element configured to perform synchronous...
POWER SUPPLY DEVICE
A power supply device includes: a switching element that performs synchronous rectification on a power to be induced in a first secondary wiring of a...
ALTERNATING VALLEY SWITCHING FOR POWER CONVERTER
An exemplary embodiment of an alternating valley switching controller is provided. The alternating valley switching controller includes a valley detection...