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Patent # Description
US-9,577,586 Feed reflected Doherty amplifier and method for driving Doherty amplifiers
The feed reflected Doherty amplifier utilizes the output characteristics of the carrier amplifier to control the input signal of the peaking amplifier to...
US-9,577,585 Ultra wideband doherty amplifier
A Doherty amplifier for amplifying an input signal to an output signal, the Doherty amplifier comprising: a main amplifier for receiving a first signal and for...
US-9,577,584 Amplifier circuit and method
A first amplifier is coupled to an output node via a first line having first and second portions. A second amplifier is coupled to the output node via a second...
US-9,577,583 Power amplifier
A power amplifier may include a first amplifying unit receiving a first bias signal to amplify a power level of an input signal; an envelope detecting unit...
US-9,577,582 Method of reducing power dissipation in a switching amplifier and circuit implementing such method
A method is for reducing power dissipation in a switching amplifier. The method may include comparing a load current with a ripple current and, if the load...
US-9,577,581 Signal amplifier with active power management
A system for amplifying a signal with active power management according to one embodiment includes a first digital to analog converter (DAC) circuit configured...
US-9,577,580 Power amplifier module
Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first...
US-9,577,579 Methods and circuits to reduce pop noise in an audio device
A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse...
US-9,577,578 Amplifying device and radio communication device
An amplifying device includes an amplifying element that amplifies a fundamental wave signal, and a short stub that has an electric length one fourth a...
US-9,577,577 Power amplifiers, systems, and methods
An apparatus includes a cascode amplifier. The cascode amplifier includes a first transistor and a second transistor. The cascode amplifier is configured to...
US-9,577,576 Biased passive mixer
Certain aspects of the present disclosure provide techniques and circuits for frequency mixing signals. One example circuit generally includes a transformer...
US-9,577,575 Injection locked frequency divider capable of adjusting oscillation frequency
An injection locked frequency divider is disclosed. The injection-locked frequency divider includes a sub-harmonic injection-locked oscillator, a reference...
US-9,577,574 Resonator, resonator device, oscillator, electronic apparatus, and moving object
A resonator includes: a resonator element including a quartz crystal substrate that includes a first area performing a thickness-shear vibration and a second...
US-9,577,573 Photovoltaic module
A photovoltaic module includes: a solar cell module including a plurality of solar cells; a junction box including a dc/dc converter unit to convert the level...
US-9,577,572 System of solar modules configured for attachment to vertical structures
A system of solar PV strip modules and method of use designed to integrate with vertical structures such as poles. The system and method use articulated...
US-9,577,571 Solar panel mounting apparatus with enhanced strength
A solar panel mounting apparatus for use in securing a frame with a solar panel stored therein to a roof of a building includes a non-hollow member with a lower...
US-9,577,570 Drive system for a vehicle trailer maneuvering drive
Disclosed are drive systems for a vehicle trailer maneuvering drives, some embodiments having a motor unit and a voltage source for supplying the motor unit,...
US-9,577,569 Motor control system of electric vehicle and controlling method for motor control system of electric vehicle...
A motor control system of an electric vehicle, a controlling method for the motor control system and an electric vehicle are provided. The motor control system...
US-9,577,568 Detection of a wire-break fault during the operation of a brushless d.c. motor
A method recognizes a wire-break fault during operation of a brushless DC motor. A switch-on delay duration of a transition of an electrical phase potential...
US-9,577,567 Method for operating a work apparatus having an electric motor
An electric motor in a work apparatus has a power characteristic line which runs between a lower rotational speed of the electric motor and an upper rotational...
US-9,577,566 Motor driving circuit
A motor driving circuit is provided, which selects a Hall sensor or a Sensor-less controller to achieve the phase commutation of a magnetic pole of a motor...
US-9,577,565 Motor control device and method for controlling the same
When detecting an amount of noise current generated in an inverter and flowing into a noise filter, sampling the detection values with an interval of a carrier...
US-9,577,564 Drive system with energy store and method for operating a drive system
A drive system with energy store and method for operating a drive system, an inverter powering an electric motor, the inverter being supplied from a unipolar...
US-9,577,563 Method for activating an electric machine
In a method for activating an electric machine having a rotor, a stator winding having multiple phases and a rectifier having multiple half-bridges...
US-9,577,562 Method and apparatus for back electromotive force (EMF) position sensing in a cryocooler or other system having...
A method includes driving a component in an electromagnetic actuator back and forth during one or more cycles of the actuator, where the actuator includes a...
US-9,577,561 Method for suppressing a speed fluctuation, a control apparatus and a compressor control system
A method for suppressing a speed fluctuation of a permanent magnet synchronous motor is provided in the present disclosure, including: obtaining a target speed...
US-9,577,560 Synchronous machine control device
A synchronous machine control device is provided with a magnet state outputter that estimates a magnetic flux of a permanent magnet forming the magnetic field...
US-9,577,559 Apparatus and method for controlling power generation of vehicle
An apparatus for controlling power generation of a vehicle includes an alternator for generating electricity using an engine torque. A controller is configured...
US-9,577,558 Power management system having automatic calibration
A power management system having automatic calibration is disclosed. The power management system may have an alternator and an electronic control unit. The...
US-9,577,557 Turbine-generator system with DC output
A turbine generator system includes a doubly-fed alternating-current (AC) generator having a first poly-phase circuit (e.g., a stator circuit) and a second...
US-9,577,556 System and method for starting a motor
A motor controller coupled to a motor is provided. The motor controller is configured to transmit a first instruction to the motor to perform a first start...
US-9,577,555 Methods of estimating a position of a rotor in a motor under transient and systems thereof
At least one example embodiment discloses a method of estimating a position of a rotor in a motor. The method includes obtaining a current regulation quality...
US-9,577,554 Multi-motor driving device and apparatus and method of driving motor for washing machine using same
A motor driving apparatus for a washing machine, in which a motor is a washing machine motor with a double stator and a double rotor respectively having first...
US-9,577,553 Drive arrangement the motor-operated adjustment of an adjusting element in a motor vehicle
The invention relates to a drive arrangement for the motor-operated adjustment of an adjusting element in a motor vehicle, wherein the drive arrangement...
US-9,577,552 Systems and methods for braking an electric motor
A motor controller for an electric motor having a stator and a rotor. The motor controller includes a power input for receiving AC power from a power source; a...
US-9,577,551 Motor drive apparatus
A motor drive apparatus that controls a current flowing through a coil of a motor, including a comparing section that compares the current flowing through the...
US-9,577,550 Vibration actuator having improved torque
Provided is a vibration actuator including: an electromechanical transduction member that transduces electric power to a mechanical vibration; a transmission...
US-9,577,549 Reversible matrix converter circuit
A reversible matrix converter circuit is provided with n levels per phase including n conversion arms exhibiting on one side n ends for generating or receiving...
US-9,577,548 Power conversion for distributed DC source array
Embodiments related to the conversion of DC power to AC power are disclosed. For example, one disclosed embodiment provides a power conversion system,...
US-9,577,547 Power conversion device
A power conversion device converts three-phase AC power into DC power by two-arm PWM modulation control and includes a main circuit that is constituted by a...
US-9,577,546 Power converter with self-driven synchronous rectifier control circuitry
An AC-DC power converter is provided with two pairs of self-driven synchronous rectifier switches in addition to, or in place of, diode bridge rectifiers for...
US-9,577,545 Power circuit, converter structure and wind power generation system thereof
A power circuit, a converter structure and a wind power generation system thereof are disclosed. The power circuit includes a first converter having an AC input...
US-9,577,544 Device and method for connecting an electric power generator to an HVDC transmission system
A device for connecting an electric power generator to an HVDC transmission system is provided, the device having (a) a first unit for converting an AC output...
US-9,577,543 Constant on time (COT) control in isolated converter
The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is...
US-9,577,542 Constant on-time (COT) control in isolated converter
The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is...
US-9,577,541 Single switch infinite-level power inverters
An electrical power converter includes a circuit with a single switching transistor that is electrically connected to a direct current power source, a first...
US-9,577,540 Multi-stage flyback converter for wide input voltage range applications
A multi-stage flyback circuit is provided for a wide range of DC input voltage applications. An intermediate circuit is coupled across a DC source which may be...
US-9,577,539 Power supply device and power supply system that have a serial connection terminal, a reverse flow prevention...
A power supply device includes a transformer, a rectification smoothing circuit having positive and negative output ends that rectifies and smoothes an induced...
US-9,577,538 Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load
A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching...
US-9,577,537 Systems and methods for load compensation with primary-side sensing and regulation for flyback power converters
System and method for regulating an output voltage of a power conversion system. The system includes a sampling component located on a chip, which for example,...
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