Patents
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
05/1992
05/19/1992US5115206 Merged differential amplifier and current source
05/19/1992US5115205 AC amplifier with automatic DC compensation
05/19/1992US5115204 Differential amplifier
05/19/1992US5115203 Digital power amplifier
05/19/1992CA1301311C Plural level beam-forming network
05/19/1992CA1301267C High-speed electronic circuit having a cascode configuration
05/19/1992CA1301263C Power saving low frequency power amplifier
05/17/1992CA2055579A1 Reflection amplifier microwave mobile station modem
05/13/1992EP0484921A1 Differential circuit for converting a single phase signal into complementary signals
05/13/1992EP0484360A1 Electrical switching circuit.
05/13/1992CN1061123A Linear transmitter training method and apparatus
05/12/1992US5113150 Unity gain inverting amplifier providing linear transfer characteristics
05/12/1992US5113148 Linear CMOS output stage
05/12/1992US5113147 Wide-band differential amplifier using gm-cancellation
05/12/1992US5113146 Amplifier arrangement
05/12/1992US5113145 Power amplifier for feeding an inductance with switched transistors
05/12/1992US5113068 Photoelectrical sensor with multistaged, filtered amplifier circuit
05/06/1992EP0484166A2 Fractional load current detector
05/06/1992EP0484031A2 Merged current clamp in triple-input transconductor, for use in oscillator
05/06/1992CN2103871U Low-cost high-performance slide class a bridge amplifier
05/06/1992CN1016550B Double-winding voice-coil speaker and its power amplifier circuit
05/05/1992US5111324 Optical receivers
05/05/1992US5111158 Modulated voltage supply and fault monitoring thereof adapted for use in an RF power amplifier system
05/05/1992US5111157 Power amplifier for broad band operation at frequencies above one ghz and at decade watt power levels
05/05/1992US5111156 Current amplifier circuit
05/01/1992WO1992008280A1 Linear transmitter training method and apparatus
04/1992
04/29/1992EP0482520A1 Constant-current circuit for light-emitting element
04/29/1992EP0482502A2 Power amplifier and mobile radio apparatus with the same
04/29/1992EP0482291A1 Isolator circuit for an audio system
04/29/1992CN2103221U Wide-band coupling resonant cavity high-power amplifier
04/28/1992US5109261 CMOS amplifier with offset adaptation
04/28/1992US5109170 Current compensation circuit
04/28/1992CA1299683C Rf power amplifier system having amplifier protection
04/22/1992EP0481741A2 High frequency power amplifier circuit and mobile radio communication apparatus using the same
04/22/1992EP0481631A2 Wide dynamic range transconductance stage
04/22/1992EP0481630A1 High efficiency cross-coupled folded cascode circuit
04/21/1992US5107223 Phase inverter and push-pull amplifier using the same
04/21/1992US5107190 Means and method for optimizing the switching performance of power amplifiers
04/21/1992US5107152 Control component for a three-electrode device
04/21/1992US5107149 Linear, continuous-time, two quadrant multiplier
04/15/1992EP0480815A1 Integrated amplifier circuit with one input signal connection
04/15/1992EP0480341A1 Hybrid matrix amplifier systems, and methods for making thermally-balanced hybrid matrix amplifier systems
04/14/1992US5105172 Monolithically realizable radio frequency bias choke
04/14/1992US5105167 Harmonic injection amplifier
04/14/1992US5105166 Symmetric bi-directional amplifier
04/14/1992US5105165 Low distortion, low noise, amplifier
04/14/1992US5105164 High efficiency uhf linear power amplifier
04/08/1992EP0479704A2 Linear amplifier
04/08/1992EP0479700A2 Current mode gate drive for power MOS transistors
04/08/1992EP0479119A2 Compensation circuit and method for stabilizing an operational amplifier
04/08/1992EP0259403B1 Method for the compensation of the offset voltage of a regulating amplifier and circuit arrangement for implementing such method
04/07/1992US5103189 High-efficiency amplifier
04/07/1992US5103188 Buffered transconductance amplifier
04/07/1992US5103187 Microwave tube amplifier stage with wide band and low dispersivity in frequency
04/07/1992US5103157 Common emitter amplifiers operating from a multiplicity of power supplies
04/07/1992US5103122 High speed low power dc offsetting circuit
04/07/1992CA1298650C Transmit mode electronic reconfiguration antenna
04/07/1992CA1298628C Amplifier circuit
04/02/1992WO1992005629A1 Noise canceling photodetector preamplifier useful for computerized tomography
04/02/1992WO1992005628A1 Working point adjusting circuit for a power amplifier
04/01/1992EP0478298A2 Low-noise preamplifier for magneto-resistive heads
04/01/1992EP0478297A1 Wide-band differential amplifier using GM-cancellation
04/01/1992EP0477907A2 A constant current circuit and an oscillating circuit controlled by the same
04/01/1992EP0252114B1 Non-reactive radial line power divider/combiner with integral mode filters
04/01/1992CN1059996A Ac voltage amplifier
03/1992
03/31/1992US5101175 Power control method for a voltage controlled power amplifier and circuitry used in the method
03/31/1992US5101174 Advanced charge detection amplifier for high performance image sensors
03/31/1992US5101172 Linear amplifier
03/31/1992US5101171 Extended bandwidth RF amplifier
03/31/1992US5101126 Wide dynamic range transconductance stage
03/31/1992CA1298361C Circuit for automatically controlling the gain-bandwidth product of operational amplifiers
03/26/1992DE4126061A1 Complementary MOSFET operational amplifier for analogue function
03/26/1992DE4029741A1 Power amplifier with series-connected transistors - has parallel-connected transistors under different currents according to transistor type
03/25/1992EP0476908A1 Amplifying circuit
03/25/1992EP0476775A2 Circuit arrangement to compensate the base current of a transistor
03/25/1992EP0476719A2 A control circuit for a laser printer
03/25/1992EP0476365A1 An adaptive bias current control circuit
03/24/1992US5099205 Balanced cascode current mirror
03/24/1992US5099203 Power amplifier having multiple switched stages and method of operating same
03/24/1992US5099139 Voltage-current converting circuit having an output switching function
03/19/1992WO1992004770A1 Differential amplifying circuit of operational amplifier
03/19/1992WO1992004768A1 Power amplifiers
03/19/1992WO1992004732A1 A field emission device employing a layer of single-crystal silicon
03/18/1992EP0475835A1 Chopper amplifier circuit for supplying a current proportional to a voltage and electromagnetic deflection system utilizing such a circuit
03/18/1992EP0475507A1 Amplifier arrangement
03/18/1992EP0475118A2 Current mirror amplifier circuit and method of driving the same
03/18/1992EP0475116A2 Monolithically realizable radio frequency bias choke
03/18/1992EP0474954A1 BICMOS driving stage for a class AB output gate in integrated circuits
03/18/1992EP0474930A1 Amplifying with directly coupled, cascaded amplifiers
03/18/1992CA2042277A1 Noise canceling photodetector preamplifier useful for computerized tomography
03/17/1992US5097229 Modulator - demodulator transformer coupled d.c. to one mhz information channel
03/17/1992US5097225 Amplifier with short-circuit protection
03/17/1992US5097224 Self-biasing, low noise amplifier of extended dynamic range
03/17/1992US5097223 Current feedback audio power amplifier
03/17/1992US5097219 Pll for controlling frequency deviation of a variable frequency oscillator
03/17/1992CA1297543C Advanced vhf-uhf wideband amplifier and signal processing device incorporating said amplifier, particularly for television signals
03/17/1992CA1297542C Amplifier
03/15/1992CA2050819A1 Chopper amplifier circuit for the supply of a current proportional to a voltage
03/12/1992DE4129334A1 Precision MOSFET resistance circuit - uses pair of drain- and source-coupledMOSFET(s) and associated source followers
03/10/1992US5095286 Fiber optic receiver and amplifier