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Variable bandwidth filter for dimmer phase angle measurements
In accordance with systems and methods of the present disclosure, an apparatus may include a variable bandwidth filter having an input for receiving an input...
Smart volume guard
Aspects of the present disclose involve a method, a device, and a system comprising a processor and a machine-readable storage medium storing a set of...
Electronic device having sound generating unit with piezoelectric element
configured for vibration and volume...
According to an aspect, an electronic device includes: a piezoelectric element; a sound generating unit that is vibrated by the piezoelectric element and...
Recording level adjustment using a distance to a sound source
An apparatus including a recording system for recording at least sound, the recording system including a microphone; a distance input adapted to have an initial...
A baseband signal-conditioning architecture applicable to radio receivers uses switched-capacitor techniques to provide high-performance signal conditioning in...
Audio processing apparatus, reproduction apparatus, audio processing
method and program
The disclosed apparatus extracts particular instrument sounds included in music in real time during music reproduction. The audio processing section 12 has an...
Envelope tracking amplifier for a transmitter having a voltage mapping
linearly related to the square of the...
An envelope tracking amplifier for a transmitter has a voltage mapping linearly related to the square of the amplitude of the baseband signal.
A Doherty amplifier has at least one peaking amplifier which has first and second drain connections, wherein the first drain connection is connected to the...
A Doherty amplifier has different drain voltages applied to the power transistors of the main and peaking stages. The impedance inverter comprises at least one...
Current sense amplifer with extended common mode input voltage range
Current sense amplifiers with extended input common mode (CM) voltage range, including an extended CM input voltage amplifier that includes a low voltage (LV)...
Operational amplifying circuit and liquid crystal panel drive device using
An operational amplifier circuit includes: a first differential amplifier section containing a P-type differential pair of P-type transistors; a second...
Apparatus and methods for multi-channel autozero and chopper amplifiers
Apparatus and methods for multi-channel autozero and chopper amplifiers are provided herein. In certain configurations, an amplifier includes at least three...
Performance of off-chip connection for power amplifier
There is provided an amplifier arrangement comprising: a main amplifier connected to receive an input signal and generate an amplified version of the input...
Combined high power rf/microwave amplifier with multiple power amplifier
units and automatic failure protection
A high power RF or microwave amplifier may amplify an RF or microwave input signal. The high power RF or microwave amplifier may include an input signal divider...
Threshold voltage-tracking bias circuit for radio frequency power
Various embodiments provide a radio frequency (RF) power amplifier (PA) circuit including an RF PA and a bias circuit. The bias circuit may provide a direct...
Amplifier arrangement comprising a low-pass filter device
An amplifier arrangement with a Class D design is proposed which has a low-pass filter device comprising a first inductor and a second inductor The first...
System and method for envelope tracking power supply
An envelope tracking power supply has a multiple-output DC/DC converter, having an alternating current generating portion and a full rectifying portion. The...
Radio frequency signal power amplification circuit
An RF amplifier includes a branch with an inductor series-connected with a capacitor between first and second power supply nodes, a junction point between the...
A TIA converts an input current into a output voltage. The TIA includes a feedback circuit that controls a bypass current to be extracted from the input...
Power supply arrangement for multi-stage amplifier
There is disclosed a multi-stage amplifier comprising: a first amplifier stage; a second amplifier stage; a first voltage supply stage arranged to provide a...
The disclosure provides an oscillator circuit for a voltage controlled oscillator. The oscillator circuit includes first and second coupled transmission lines,...
Fault diagnosis system, fault diagnosis device, fault diagnosis method,
program, computer-readable medium, and...
A fault diagnosis method utilizing a fault diagnosis system for diagnosing a photovoltaic module by estimating a fault location, the fault diagnosis system...
Hurricane proof solar tracker
A hurricane-proof solar tracker and related method of operation includes a solar panel array assembly having one end coupled to a ballast and a tilting assembly...
Method and apparatus for forming and mounting a photovoltaic array
A photovoltaic (PV) module framing and coupling system enables the attachment of PV modules to a roof or other mounting surface without requiring the use of...
Photovoltaic mounting system and devices
Photovoltaic mounting systems having sealant injection system are provided herein. Such sealant injection systems provide directional control and containment of...
Watertight roof assembly integrated with solar panels
A watertight roof assembly integrated with solar panels to construct a roof of a building includes a plurality of support units spaced from each other, a...
Motor driving apparatus with abnormality detection function
The invention provides a motor driving apparatus of the invention comprises a power semiconductor device (11) for power conversion; a driving unit (12)...
Electric motor thermal management
A method and apparatus for electric motor thermal management is provided. A thermal model allows estimation of temperatures of an electric motor and...
Air conditioner controlling prheating power of compressor and mechanism
providing preheating power for compressor
An air conditioner equipped with a compressor, an indoor heat exchanger and an outdoor heat exchanger includes: an inverter circuit that drives a motor of the...
Method for operating a linear motor assembly and linear motor assembly
A method for operating a linear motor assembly includes: open-loop controlled introduction of electric energy to a first stator segment provided with solenoids...
Motor drive control device and operation method thereof
When a motor drive control device is integrated in a semiconductor integrated circuit having a small chip area, calibration for improving the accuracy of...
Method of operating a wind turbine as well as a system suitable thereof
A method of operating a wind turbine is provided. The wind turbine comprises a turbine rotor with at least one blade having a variable pitch angle, a power...
Wind park control system
A control system for controlling a set point of an individual power output of each wind turbine. The wind turbines are grouped into a plurality of groups of...
Driving device and driving method for motor, cooling device and electronic
The present disclosure provides a device and a method for driving a motor that demonstrates low noise and/or low vibration. A pulse-modulated control pulse...
Method and apparatus for controlling an electric machine
The invention relates to a method for controlling an electrical machine (10) by means of an inverter (12), in particular for use in a motor vehicle, wherein the...
Electric working machine
An electric working machine including: a motor; a driving unit configured to be driven by the motor; a trigger switch configured to allow rotation of the motor;...
Method and apparatus for masking a portion of a component
A method and apparatus (2) for masking a portion (36) of a component (30), the apparatus (2) comprising: a sacrificial masking element (4) for masking the...
Electrostatic induction power generator
An electrostatic induction power generator includes a spherical member for making a distance between surfaces of a first substrate and a second substrate facing...
MEMS device, electronic apparatus, and manufacturing method of MEMS device
A MEMS device is a MEMS device having a MEMS vibrator which includes a plurality of MEMS constituent elements laminated and formed above a first foundation...
Single-phase power converter, three-phase two-phase power converter, and
three-phase power converter
This power converter (1) is provided with: unit cells (11-M) having a semiconductor switch, a DC capacitor (C) and a charge/discharge current I/O terminal; a...
Inverter-charger combined device for electric vehicles and method thereof
Disclosed is an inverter-charger combined device for electric vehicles configured to drive a 3-phase motor by charging a high voltage battery in case of...
Solar photovoltaic system with maximized ripple voltage on storage
We describe a photovoltaic (PV) power generation system comprising at least two PV panels and a power conditioning unit. The dc power outputs of the PV panels...
An inverter device includes a three-phase inverter, which has switching elements, and a controller, which is programmed to perform two-phase modulation control...
Power conversion device including bidirectional switch having
reverse-blocking insulated gate bipolar transistors
An increase in leakage current when a reverse voltage is applied to reverse-blocking insulated gate bipolar transistors is suppressed, thus reducing a loss...
Method for activating a rectifier, which has active switching elements
A method for activating a rectifier having active switching elements in the event of a load dump, the active switching elements being activated during the...
Electrical converter system
The present invention relates to an electrical converter for power supply, which is constructed from individual modules. Each of the identical modules includes...
Variable speed drive for subsea applications
A Variable Speed Drive (1) for subsea installations (20), subsea vessels or subsea vehicles, as well as to a corresponding subsea installation (20), subsea...
Bidirectional converters and flux-balancing control methods thereof
A flux-balancing method for an isolated bidirectional converter uses a flux-balancing control loop and a current-balancing control loop to control the DC...
Multi-output power supply apparatus and output circuit thereof
A multi-output power supply apparatus may include a transformer unit transforming a voltage level of input power using a primary winding and first and second...
Switching power supply apparatus
A switching power supply apparatus of the present disclosure is a device connection state detection circuit that detects a connection state in a load device...