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High-voltage voltage-switched class-S amplifier
A voltage-switched class-S amplifier circuit includes an output stage configured to receive at least one control signal and operative to generate an output...
Input switch leakage compensation
An apparatus including: a first switch configured to provide a feed-forward path at an input of a first amplifier of a plurality of amplifiers coupled together...
Power amplifying apparatus
A power amplifying apparatus is provided. The power amplifying apparatus includes a first substrate and N power amplifiers. The N power amplifiers are disposed...
Dynamic bias control
Systems and methods for controlling a power amplifier includes combining a digital modulated data signal with a digital bias signal to generate a combined...
Circuits and methods for reducing supply sensitivity in a power amplifier
In one embodiment, the present disclosure includes a circuit comprising a first power amplifier stage having an input to receive an input signal, an output...
Photoconductive semiconductor amplifier and switch
A switch comprises two photoconductive semiconductors and two corresponding laser diodes driven by opposing voltage sources. The two photoconductive...
A power amplifier includes a plurality of power amplification modules, each of which includes an input terminal and an output terminal. Equivalent input...
Tunable power amplifier with wide frequency range
A circuit includes an amplifier configured to amplify an input signal and generate an output signal. The circuit also includes a tuning network configured to...
Amplifier linearization using predistortion
A device and method of predistortion linearization that account for both EVM and spectral mask are disclosed. The device and method are based on transforming...
Linearity performance for multi-mode power amplifiers
Improved linearity performance for multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a...
Dynamic current source for amplifier integrator stages
An amplifier system may include a current source, an impedance element responsive to a current change, and a feedback controller generating a control signal...
Chopper stabilized amplifier with synchronous switched capacitor noise
A chopper stabilized amplifier with synchronous switched capacitor noise filtering is disclosed. In an exemplary embodiment, an apparatus includes a chopper...
Variable switched DC-to-DC voltage converter
A voltage converter can be switched among two or more modes to produce an output voltage tracking a reference voltage that can be of an intermediate level...
Amplification device and amplification method
An amplification device includes: a first circuit configured to: split an input signal into a first signal and a second signal, and adjust the first signal so...
System and method for a radio frequency system
In accordance with an embodiment, a method includes producing a baseband variable frequency signal and producing a substantially fixed frequency signal by...
Apparatus for determining and/or monitoring at least one process variable
An apparatus for determining and/or monitoring at least one process variable of a medium, comprising: an oscillatable unit, which has a membrane and at least...
Apparatus and methods for phase linearization and interpolation in rotary
traveling wave oscillators
Apparatus and methods for phase linearization and interpolation in rotary traveling wave oscillators (RTWOs) are provided. In certain configurations, an RTWO...
Voltage-controlled oscillator with reduced single-ended capacitance
Embodiments provide a voltage controlled oscillator (VCO) having reduced single-ended capacitance. In one embodiment, the VCO may include a transformer, a...
Reducing mismatch caused by power/ground routing in multi-core VCO
Reducing coupling and mismatch in multi-core VCOs, including: arranging a plurality of inductors in a plurality of VCO cores in a parallel differential inductor...
Mounting assemblies for solar panel systems and methods for using the same
A solar panel mount assembly includes a base portion mountable to an installation surface, and a support arm defining a support shoulder. The support arm is...
Solar photovoltaic module clamping system
A clamping system for securing the corners of four photovoltaic modules to a carport purlin, the clamping system having upper and lower body portions with a...
End clip for recessed rail
A clamp is provided that allows for easily and securely mounting an object such as a PV panel to a rail having an internal recess or channel. The clamp utilizes...
Protective circuitry for insulation damage due to failure of intermediate
The present disclosure relates to an intermediate circuit for an EC motor, comprising at least two similar series-connected capacitors for the connection of an...
Method for controlling a controlled switch operating the power supply of
an electric motor
A method for controlling a controlled switch operates a power supply of an electric motor from an AC voltage source. The method includes actuating closure of...
Switched reluctance motor
A switched reluctance motor includes: a stator provided with a plurality of stator teeth as salient poles in a radial fashion with winding wire wound around...
Motor control system and method for skipping resonant operating
A system and method of avoiding hunting behavior by a motor around disallowed speed ranges. A sensor or sensorless method determines the motor's actual speed. A...
Control apparatus for AC motor
A control apparatus controls an AC motor by detecting current passing through one phase. The apparatus includes an upper controller which includes a torque...
Motor control device
A motor control device for controlling a multiphase brushless motor in a vector control manner includes: a current command value generation unit that generates...
System and method for wind power dispatch in a wind farm
A system for wind power dispatch that includes a wind farm controller for controlling operation of wind turbines in a wind farm and regulating real time power...
Motor control device and control method of stepping motor
There is provided a motor control device controlling an energizing state of a coil of each phase for driving a stepping motor having multiple phase coils. The...
Electric working machine
An electric working machine including: an input part; a control unit configured to control a motor in accordance with an operation amount of the input part; and...
Angle detection apparatus, motor driving control apparatus and angle
Determining an amount of rotating a vector according to a result of comparing the rotated vector with a predetermined phase and rotating the vector according to...
Control system for a fastening power tool
A fastening power tool such as a nailer is provided including a tool housing, an input unit actuated in response to an operator input, and a motor assembly...
Motor drive method and motor drive device
A motor drive method of the invention is to drive a brushless motor having a rotor, a stator, and a hall element used as a position detecting sensor. While...
Method and device for positioning a brushless electric drive
A method for positioning a brushless electric drive comprising a stator that has at least one phase winding to which a voltage signal can be applied, and a...
Motor starter system and method for operating same
A motor starter system and a method for operating same are disclosed. According to an embodiment of the present invention, reliability of a motor protection...
Induction heating apparatus and power generation system comprising the
An induction heating apparatus includes a rotor having a rotation shaft, and a stator having a heating portion disposed at a distance from the rotor. A coil...
Three dimensional (3D) robotic micro electro mechanical systems (MEMS) arm
A micro assembly having a substrate and an operating plane coupled to the substrate. The operating plane is movable from an in-plane position to an out-of-plane...
Method for reduction of stiction while manipulating micro objects on a
A system and method reduce stiction while manipulating micro objects on a surface. The system and method employed a field generator configured to generate a...
Electrical power conversion system and method
A system and method for electrical power conversion, with the system being intended for use in converting a high voltage DC power output from a turbine...
Soft-switching low input/output current-ripple power inversion and
A soft-switching and low input current ripple power inversion circuit, in which the inversion circuit is connected in parallel to an input DC voltage source and...
Power inverter implementing phase skipping control
A power inverter includes a DC/AC inverter having first, second and third phase circuitry coupled to receive power from a power source. A controller is coupled...
System on chip with power switches
According to an exemplary implementation, an integrated circuit (IC) includes a logic circuit monolithically formed on the IC. The logic circuit is configured...
Grid active power filters using cascaded multilevel inverters with
switching angle control
Various methods and systems are provided for active power filtering utilizing cascaded multilevel inverters. In one example, among others, a grid active power...
Switching power supply apparatus with improved power conversion efficency
to reduce power usage
A switching power supply apparatus includes an isolated converter with efficiency characteristics in which power conversion efficiency of a rated load is higher...
Systems and methods for controlling active rectifiers
A method of controlling a rectifier includes receiving a gain factor, receiving a ramp interval, and generating a rectifier switch control voltage. The...
Rectifying module, electrical apparatus thereof, and rectifying method
An exemplary embodiment of the present disclosure illustrates a rectifying module, which is operable for rectifying an alternating current (AC) signal into a...
Power conditioning unit with voltage converters
A power conditioning unit for delivering power from a power source to a mains utility supply, the power conditioning unit comprising a plurality of input...
A matrix converter includes: a power convertor that includes a plurality of bidirectional switches; and a controller configured to control the plurality of...
Direct current voltage conversion device
A direct current voltage conversion device includes a buck converter receiving a direct current input voltage and outputting a direct current first voltage...