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Patent # Description
US-9,614,487 Wireless communicatoin method and apparatus for reducing reception error by performing automatic gain control...
A receiving apparatus includes a variable gain unit to change between a first gain and a smaller second gain, and to amplify a received signal to obtain an...
US-9,614,486 Adaptive gain control
A gain control system is responsive to a user gain setting and to an effective signal level to calculate and adaptively vary an output gain to avoid output...
US-9,614,485 Amplifier circuit
An amplifier circuit includes: plural transistors; plural first transmission lines respectively connected between input terminals of the plural transistors;...
US-9,614,484 Systems and methods of RF power transmission, modulation, and amplification, including control functions to...
Embodiments of the present invention include a method and system for control of a multiple-input-single output (MISO) device. For example, the method includes...
US-9,614,483 Current analog audio amplifier
A current analog audio amplifier having an operational amplifier current-reading and voltage-controlling current source, a voltage gain stage, an output buffer...
US-9,614,482 Amplifier
An amplifier includes two input terminals to receive a differential, two-tone transmission signal; two output terminals; a coil having terminals connected with...
US-9,614,481 Apparatus and methods for chopping ripple reduction in amplifiers
Apparatus and methods for digitally-assisted feedback offset correction are provided herein. In certain configurations, an amplifier includes amplification...
US-9,614,480 Wide-band multi stage doherty power amplifier
A multi-stage Doherty power amplifier ("PA") circuit which achieves superior efficiency over broadband range of frequencies is disclosed. Conventional...
US-9,614,479 Class-B/C Doherty power amplifier
It is provided an amplifier arrangement for optimizing efficiency at a peak power level and a back-off power level .gamma.. The amplifier arrangement comprises...
US-9,614,478 Systems and methods for providing modulation of switchmode RF power amplifiers
Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC...
US-9,614,477 Envelope tracking supply modulators for multiple power amplifiers
The present disclosure is directed to an envelope tracking supply modulator for multiple PAs. The envelope tracking supply modulator is configured to provide,...
US-9,614,476 Group delay calibration of RF envelope tracking
An RF communications system, which includes an RF power amplifier, an envelope tracking power supply, and supply control circuitry, is disclosed. The RF...
US-9,614,475 External antenna for communicating with a motor and method of using same
An antenna assembly for communicating with a motor comprises an antenna for mounting exterior of a motor housing and a link for coupling the antenna to a motor...
US-9,614,474 Periodic disturbance automatic suppression device
In suppression of torque ripple with a periodic disturbance observer, adjustment of a gain portion is determined sequentially during monitoring operation of...
US-9,614,473 Flux weakening AC motor control by voltage vector angle deflection
A method for controlling a three phase AC motor includes generating an operating point error signal based upon a difference between a reference operating point...
US-9,614,472 System for monitoring temperature inside electric machines
The electric machine comprises at least one winding made of a material having a temperature dependent resistance. The temperature of the winding is monitored...
US-9,614,471 Motor controller and method for controlling motor
A controller of a motor controller operates to perform a process including: controlling the H bridge circuit to switch to the charge mode; controlling the H...
US-9,614,470 Motor current controller and method for controlling motor current
A motor current controller includes: an H-bridge circuit that includes a switching element and is connected to a motor coil provided in a motor; and a control...
US-9,614,469 Apparatus and method for controlling electric vehicle
An apparatus and method for controlling an electric vehicle are provided. The apparatus includes a battery that is configured to charge electrical energy and a...
US-9,614,468 Intermediate connecting devices and electronically commutated motors for HVAC systems
Intermediate connecting devices and electronically commutated (ECM) motors for HVAC systems are disclosed, as well as methods for their use within the HVAC...
US-9,614,467 Motor control device
The voltage amplification factor during rapid deceleration control of a motor is set to a value obtained by adding a first voltage amplification factor...
US-9,614,466 Electronic braking for a universal motor in a power tool
A power system is provided comprising an electric universal motor including an armature rotatable coupled to an armature shaft and a commutator disposed on an...
US-9,614,465 Electric motor clamping system
An electric motor system having a power supply, an electric motor connected to the power supply, an object driven by the motor having a range of motion and a...
US-9,614,464 Control of heavy machines
The present invention relates to a system for controlling rotational speed on a rotating process machine, which for example is a turbine or a propeller, where...
US-9,614,463 Piezoelectric device, piezoelectric actuator, hard disk drive, and inkjet printer apparatus
A piezoelectric device is provided with a piezoelectric element including a piezoelectric layer exhibiting a polarizability .gamma. smaller than ...
US-9,614,462 Rippled disc electrostatic generator/motor configurations utilizing magnetic insulation
Electrostatic generators/motors designs are provided that generally may include a first rippled stator centered about a longitudinal axis; a second rippled...
US-9,614,461 Bidirectional high frequency variable speed drive for CHP (combined heating and power) and flywheel applications
The present invention provides a bidirectional high frequency speed drive configured to connect to a utility grid and an electrical machine. The bidirectional...
US-9,614,460 Voltage compensating method for converter
A voltage compensating method is applied to a converter for converting a DC voltage into an AC voltage. The converter includes a first switch module, a second...
US-9,614,459 Modulation of switching signals in power converters
There is provided a method and control system for controlling a switching device in a power converter according to a modulation scheme. The switching device...
US-9,614,458 Methods for determining maximum power point tracking in power converters
Methods and systems for determining maximum power points in photovoltaic inverters. The present application describes unique PV converter topologies including...
US-9,614,457 Modular thyristor-based rectifier circuits
Power conversion apparatus for controllably converting alternating current (AC) to direct current (DC). An example apparatus includes multiple AC sources,...
US-9,614,456 Power conversion apparatus that prevents inrush current and air-conditioning apparatus using the same
A power conversion apparatus includes: a first smoothing capacitor and a second smoothing capacitor connected in parallel to each other, an inrush current...
US-9,614,455 High voltage direct current transmission system and control method thereof
A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: a rectifier...
US-9,614,454 Power conversion device with reduced wiring distance
Provided is a power converter 3 that directly converts polyphase AC power to AC power. A converter circuit has a plurality of switching elements 311, 313, 315,...
US-9,614,453 Parallel hybrid converter apparatus and method
An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch...
US-9,614,452 LED driving arrangement with reduced current spike
A LED driving arrangement constituted of: a control circuitry; an inductance element having a primary side and a secondary side; the inductance element...
US-9,614,451 Starting an isolated power supply with regulated control power and an internal load
A power apparatus for an external load comprises a transformer, a power coordinating unit, a control unit and an internal load. The transformer is adapted for...
US-9,614,450 Control voltage adjusting circuit, feedback signal generating circuit, and control circuit including the same
A feedback signal generating circuit may include a control voltage adjusting circuit outputting a feedback voltage by comparing a control voltage input from an...
US-9,614,449 Flyback power converter with programmable output and control circuit and control method thereof
The present invention provides a flyback power converter with a programmable output and a control circuit and a control method thereof. The flyback power...
US-9,614,448 Switching power-supply device
A switching power-supply device, in which an input power is applied to a primary winding of a transformer, a pulse voltage is induced in a secondary winding of...
US-9,614,447 Control circuits and methods for active-clamp flyback power converters
A method for controlling an active-clamp flyback power converter is provided. The control method comprises: generating a first switch signal according to an...
US-9,614,446 Power supply device
A power adaptor to supply power for a portable device has an input circuit (21) for receiving mains input power, a power switch device (25), a power inductance...
US-9,614,445 Systems and methods for high precision and/or low loss regulation of output currents of power conversion systems
Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a...
US-9,614,444 Dynamic voltage transition control in switched mode power converters
A switched mode power converter includes a power stage, a main compensator, and a voltage ramp circuit. The power stage is operable to output a voltage to a...
US-9,614,443 Smooth transitioning buck-boost DC-DC converter
A buck-boost DC-DC converter, which includes converter control circuitry, converter switching circuitry, and a first inductive element, is disclosed. The...
US-9,614,442 Modular DC-DC Converter including a DC transformer module
A modular dc-dc boost converter system is provided that can substantially improve efficiency over a wide range of input and output voltages. The system includes...
US-9,614,441 DC-DC converter and organic light emitting display device including the same
a DC-DC converter, including a conversion unit configured to convert a battery voltage input to an input terminal of the DC-DC converter into a first voltage,...
US-9,614,440 Power supply device and semiconductor integrated circuit device
A power supply device includes a linear regulator including an output stage amplifier, a current sensing circuit, and a switching regulator. The current sensing...
US-9,614,439 Semiconductor device
A semiconductor device includes a voltage hold circuit that raises a second boosted voltage with rise of an output voltage of a booster circuit that generates a...
US-9,614,438 Adjusting feedback voltage ripple amplitude to control power supply switching frequency
A method, in some embodiments, comprises: receiving a feedback voltage signal generated by a switch-mode power supply; generating an error signal based on a...
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