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Low intermediate frequency receiver
An LIF receiver includes a receiver path comprising: a mixer for mixing a received RF signal with a local oscillator signal to provide an IF signal at a lower...
Low-voltage analog variable gain amplifier with enhanced linearity
In a variable gain amplifier, a base of a bipolar first transistor receives a first differential input signal. The emitter of the first transistor is connected...
Enhancement of dynamic range of audio signal path
In accordance with embodiments of the present disclosure, an apparatus for providing an output signal to an audio transducer may include an analog signal path...
Adaptive loudness control
Loudness control is performed by estimating the energy and loudness of an audio signal. Loudness of the audio signal is determined by decomposing the audio...
Power supply regulation for programmable gain amplifier used in a CMOS
An image sensor array that has a plurality of image sensing pixels and a plurality of programmable gain amplifiers, each of the programmable gain amplifiers...
Digital AGC control method and feedback control apparatus
A digital AGC control method and feedback control apparatus that enable appropriate feedback control in response to reference input values of various magnitudes...
Driver amplifier systems and methods of their operation
The embodiments described herein provide a radio frequency (RF) driver amplifier and method of operation. In general, the driver amplifier facilitates high...
Chopper-stabilized amplifier and method therefor
In one embodiment a chopper-stabilized amplifier may be formed to include a symmetrical passive RC notch filter having two cut-off frequencies. In an...
Electronic device with low noise amplifier module
An electronic device may include an antenna, a transceiver, and a low noise amplifier module that amplifies receive signals from the antenna to the transceiver...
Multi-stage switched-capacitor DC blocking circuit for audio frontend
An integrated DC blocking amplifier circuit, including: an operational amplifier configured in a differential amplifier; and at least first and second two-stage...
Process device with light change triggered display
A field device comprises a transducer, a photodetector, a display, and a display controller. The transducer controls or monitors process variable, and the...
Apparatus and methods for power amplifier output matching
Apparatus and methods for power amplifier output matching is provided. In certain configurations, an output matching circuit includes a supply voltage biasing...
Methods and devices for testing segmented electronic assemblies
Methods and devices are disclosed for testing an electronic assembly comprising a number of segments. In one embodiment, a scalable periphery amplifier may...
Amplifier phase distortion correction based on amplitude distortion
This application discloses correction circuitry for correcting a phase distortion in an amplification circuit by measuring an amplitude distortion and...
Doherty power amplifier with tunable impedance load
Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and control circuits along with methods of operating the...
Current controlled transconducting inverting amplifiers
An amplifier including a first transistor of a first conduction type; a second transistor of a second conduction type, the second transistor being coupled to...
Local oscillation generator, associated communication system and method
for local oscillation generation
A local oscillation generator includes a multi-phase circuit and a multiplexer. The multi-phase oscillator provides a plurality of multi-phase oscillation...
Laminate-based voltage-controlled oscillator
An apparatus having a substrate, a first die and a second die is disclosed. The substrate may include a circuit having an inductance. The first die may be (i)...
Semiconductor integrated circuit, oscillator, electronic apparatus, and
A semiconductor integrated circuit includes a semiconductor substrate on which an oscillation circuit that generates an oscillation signal by oscillating a...
Solar tracker with refraction-based concentration
The invention comprises: a structure (3) supporting at least one refraction-based concentration element (1) and at least one collector (2) positioned parallel...
Solar tracking system
Solar tracking systems, as well as methods of using such solar tracking systems, are disclosed. More particularly, embodiments of the solar tracking systems...
Method and apparatus for operating an electrical drive system
An electrical drive system includes an electric motor having an armature, which is mounted on a stator, and a rotor, wherein aligning stator flux with rotor...
System and method to control a switched reluctance machine in continuous
A control system for a switched reluctance (SR) machine is disclosed. The SR machine may have a rotor and a stator. The control system may have a converter...
Control of a permanent magnet synchronous generator wind turbine
Aspects of the disclosure relate to a control approach that utilizes a direct-current-based d-q vector control technology for variable-speed PMSG wind turbines...
Hybrid controller for brushless DC motor
A circuit includes a processor that analyzes a pulse width modulated (PWM) signal feedback from a brushless DC motor to determine a transition between a mutual...
Control device and method for establishing the rotor angle of a
A method for establishing the rotor angle of a synchronous machine. The method includes determining a first estimated value for the d-axis of the synchronous...
Apparatus to detect the zero-cross of the BEMF of a three-phase electric
motor and related method
A device may detect the zero-cross event of a BEMF of an electric motor with first, second, and third phase windings driven by respective first, second, and...
Shift position switching controller
A motor control system controls a rotation drive of a motor by serially switching a power supply phase of the motor based on a count value of an output signal...
Motor driving device
A motor driving device includes a clock oscillator configured to generate a clock signal; and a logic unit configured to receive the clock signal, control...
Motor driving device for vehicle
A motor driving device for a vehicle includes a brushless DC (BLDC) motor driving device for optimizing electromagnetic compatibility (EMC). The motor driving...
Single phase motor drive circuit, single phase motor apparatus, apparatus
According to an embodiment, single phase motor drive circuit includes a counter unit, an energization pattern generation unit, and a drive unit. The unit counts...
Direct torque control method for inhibiting torque ripples
The present invention relates to a direct torque control method for inhibiting torque ripples, mainly comprising the following steps: establishing an MC voltage...
Method and electronic device for improving the availability of an
A method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, including...
A drive circuit having asymmetrical drivers. In an embodiment, a brushless DC motor may be driven by a drive circuit having three high-side MOSFETs and three...
Blower system and method
A system includes a grid coupled to an electrical bus; an electrical power modulation device coupled to the electrical bus that can output modified electrical...
Ultrasonic actuator for a linear ultrasonic motor and linear ultrasonic
motor having an ultrasonic actuator
An ultrasonic actuator includes at least one primary waveguide resonator, with each primary generator being in flat, at least one auxiliary waveguide resonator,...
Electrostatic parallel plate actuators whose moving elements are driven
only by electrostatic force and methods...
An actuator apparatus is provided that includes at least one actuator device, each actuator device including an array of moving elements, each individual moving...
Method and apparatus for chaotic democratic pulse width modulation
An apparatus, method and system for operating a power converter of a plurality of serially connected power converters coupled using chaotic democratic control...
Method for the operation of an inverter, and inverter
An inverter and a method for operating the inverter. In one instance, a pulse-controlled inverter comprises multiple phase systems. Each of the phase systems...
Switched power converter
A power converter includes a DC port and an AC port. A set of controllable "DC" switches couples the DC port to a central series-resonant circuit, and a set of...
Photovoltaic system and power supply system
According to one embodiment, a system includes modules to detect a node voltage and an output current of a converter, a detector to obtain an effective power...
Method for providing low voltage DC power from AC mains power
According to one aspect, embodiments of the invention provide a power supply system comprising an input line configured to receive input AC power, a first...
Received power conversion device for resonant wireless charging system
Provided is a received power conversion device for a resonant wireless charging system, including a wireless power receiver for receiving wireless power from a...
Comparator based synchronous rectifier control circuit and synchronous
rectifier control method
A synchronous rectifier control circuit an includes a current transformer (CT), a bridge rectifier, and a comparator, where the CT is connected in series to a...
Power transmitting apparatus for digitally controlling voltage and current
of alternating current signal
A power transmitting apparatus for digitally controlling voltage and current of alternating current (AC) includes an input part, an output part, and a digital...
System and method for a switched-mode power converter
In accordance with an embodiment, a power converter includes an H-bridge switching arrangement, a transformer having a primary winding coupled to an output of...
Controlling a switched mode power supply with maximised power efficiency
A control circuit, that controls the duty cycle of a switched mode power supply, comprises a reference voltage generator that, responsive to the input voltage...
System and method for synchronous rectifier
A synchronous rectification circuit for a power supply includes a power switch for coupling to a secondary winding of a transformer of the power supply and an...
Power converter including a secondary synchronous rectification control
In accordance with an embodiment, a method for controlling a circuit includes controlling pulse width modulation on a primary side of a quasi-resonant...
Active clamp circuits for flyback power converters
An active clamp circuit for a flyback power converter is provided. The active clamp circuit includes a power transistor, a capacitor, a high-side transistor...