H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
10/2007
10/11/2007	US20070236286 Pulse modulation type electric power amplifier
10/11/2007	US20070236258 Current-balanced logic circuit
10/11/2007	US20070235633 Light-receiving semiconductor device and optical pickup device
10/11/2007	US20070235632 Method and apparatus for integrating a quantity of light
10/10/2007	EP1843469A2 Error cancelling comparator based switch capacitor circuit and method thereof
10/10/2007	EP1843465A1 Multiple feedback class-D amplifier
10/10/2007	EP1843464A1 Voltage-to-current converter
10/10/2007	EP1842285A2 Transformer circuit
10/10/2007	EP1683268A4 Power level controlling of first amplification stage for an integrated rf power amplifier
10/10/2007	EP1239585B1 Differential amplifier
10/10/2007	EP1169776B1 Biasing arrangement for field effect transistors
10/10/2007	CN200959591Y Audio-frequency power amplifier
10/10/2007	CN200959590Y Offset circuit of power amplifier
10/10/2007	CN101053151A 半导体器件及功率放大器 Semiconductor devices and power amplifier
10/10/2007	CN101053150A Constant current darlington circuits for high power
10/10/2007	CN101051821A Voltage follower of small output resistance, large output amplitude
10/10/2007	CN101051820A Amplifier and driving circuit using the same
10/10/2007	CN101051819A Previous amplifier circuit, light-receiving amplifier circuit, and optical pickup apparatus
10/10/2007	CN101051817A Step travel wave amplifier circuit
10/10/2007	CN101051816A Device and method for realizing wide band micro power linear power amplication
10/10/2007	CN100342456C Multiple output current mirror with improved accuracy
10/09/2007	US7281144 Power management in communication devices
10/09/2007	US7279984 Method for differential-mode processing of an incident voltage relative to a reference voltage and corresponding device
10/09/2007	US7279983 Output amplifier structure with bias compensation
10/09/2007	US7279982 Apparatus and method for low current differential swing I/O interface
10/09/2007	US7279981 Compensation method for low voltage, low power unity gain amplifier
10/09/2007	US7279980 Non-uniform distributed multi-stage circuits
10/09/2007	US7279976 Differential amplifier with controlled common mode output voltage
10/09/2007	US7279975 Differential circuit with offset control
10/09/2007	US7279974 Fully differential large swing variable gain amplifier
10/09/2007	US7279973 H-bridge utilizing intermediate switching phase(s)
10/09/2007	US7279971 Composite power amplifier
10/09/2007	US7279968 Amplifier output voltage swing extender circuit and method
10/09/2007	US7279967 Multi-channel, multi-power class D amplifier with regulated power supply
10/09/2007	US7279966 Systems for pseudo-BD modulation
10/09/2007	US7279965 Reduction of audible artifacts in an audio system
10/09/2007	US7279964 Drive circuit, device, and method for suppressing noise, and use
10/09/2007	US7279951 DC offset cancellation circuit, differential amplification circuit with DC offset cancellation circuit, photo-electric pulse conversion circuit, pulse shaping circuit, and pulse generation circuit
10/09/2007	US7279942 Differential current output unit
10/09/2007	US7279939 Circuit for differential current sensing with reduced static power
10/09/2007	US7279934 Apparatus for delivering inputted signal data
10/09/2007	CA2280471C Power amplifier having monitoring and circuit protection
10/04/2007	WO2007112256A1 Amplifier and method of amplifying an input signal
10/04/2007	WO2007069060A3 Enhanced low noise amplifier
10/04/2007	WO2006107261A9 Programmable microwave circuit
10/04/2007	US20070229172 Electronic circuit
10/04/2007	US20070229171 Wireless transmitter having multiple programmable gain amplifiers (PGAs) with tuned impedance to provide substantially linear response
10/04/2007	US20070229170 High-frequency power amplifier device
10/04/2007	US20070229169 Single supply direct drive amplifier
10/04/2007	US20070229168 Wideband high frequency chokes
10/04/2007	US20070229165 Integrated parallel power amplifier
10/04/2007	US20070229163 Plop Noise Avoidance for an Amplifier
10/04/2007	US20070229161 Voltage-to-current converter
10/04/2007	US20070229160 Control circuit for controlling a current and/or voltage of an electronic circuit
10/04/2007	US20070229159 Multi-mode class-D amplifiers
10/04/2007	US20070229158 Wide-temperature integrated operational amplifier
10/04/2007	US20070229157 Circuit having enhanced input signal range
10/04/2007	US20070229156 Class ab folded cascode stage and method for low noise, low power, low-offset operational amplilier
10/04/2007	US20070229155 Feedback amplifier
10/04/2007	US20070229153 Fet Bias Circuit
10/04/2007	US20070228988 Vacuum tube circuit
10/04/2007	US20070228258 Amplifier circuit and optical pickup device
10/04/2007	US20070228257 Trans-impedance amplifier with offset current
10/04/2007	CA2647532A1 Amplifier and method of amplifying an input signal
10/03/2007	EP1841070A2 Prescaler circuit and buffer circuit
10/03/2007	EP1841067A2 Error averaging comparator based switch capacitor circuit and method thereof
10/03/2007	EP1841060A1 Electronic circuit
10/03/2007	EP1839389A2 Differential amplifier circuit and method for reducing thermally induced offsets caused by large differential signals
10/03/2007	EP1714380A4 Low power consumption adaptive power amplifier related application
10/03/2007	CN101048953A Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/03/2007	CN101047362A Operation amplifier
10/03/2007	CN101047361A 电压电平移位电路和半导体集成电路 Voltage level shift circuit and a semiconductor integrated circuit
10/03/2007	CN101047334A Common power supply anti-interference power supply method and circuit for hand transmitting equipment
10/03/2007	CN100341241C System for controlling class D amplifier
10/02/2007	US7277689 Transmission arrangement with power regulation
10/02/2007	US7277136 Adaptive bandwidth control in a kinescope amplifier
10/02/2007	US7276976 Triple cascode power amplifier of inner parallel configuration with dynamic gate bias technique
10/02/2007	US7276975 Transistor integrated circuit apparatus
10/02/2007	US7276973 Automatic bias control circuit for linear power amplifiers
10/02/2007	US7276972 Distributed amplifier
10/02/2007	US7276971 Multi-operational amplifier system
10/02/2007	US7276970 System and method for linearizing a CMOS differential pair
10/02/2007	US7276969 Multi-amplifier circuit
10/02/2007	US7276968 Class D amplifier
10/02/2007	US7276964 PWM power amplifier and method for controlling the same
10/02/2007	US7276963 Switching power amplifier and method for amplifying a digital input signal
10/02/2007	US7276961 Constant voltage outputting circuit
10/02/2007	US7276940 Buffer/voltage-mirror arrangements for sensitive node voltage connections
10/02/2007	US7276684 High gain photo cell with improved pulsed light operation
09/2007
09/27/2007	WO2007109738A2 Class l amplifier
09/27/2007	WO2007109207A1 Multi-mode power amplifier with reduced low power current consumption
09/27/2007	WO2007108103A1 Analog circuit
09/27/2007	WO2007107963A1 Converter with parallel coupled differential input pairs
09/27/2007	US20070226771 Signal amplifier circuit and optical receiver
09/27/2007	US20070222524 Antenna Amplfier
09/27/2007	US20070222523 Multi-stage power amplifier with enhanced efficiency
09/27/2007	US20070222522 Method and apparatus for efficient load biasing
09/27/2007	US20070222521 Power amplifier
09/27/2007	US20070222520 High-frequency power amplifier
09/27/2007	US20070222518 High frequency amplifier circuit and mobile communication terminal using the same

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