Patents
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
01/1993
01/12/1993US5179356 Circuit arrangement for the compensation of the control current of a transistor
01/12/1993US5179355 Slew control in current feedback amplifiers
01/12/1993US5179354 Operational amplifier
01/12/1993US5179353 Power control circuit used for both analog/digital dual mode
01/12/1993US5179352 Amplifier with distortion reducing feedback
01/07/1993WO1993000739A1 Capacitive load driving circuit
01/07/1993EP0521739A1 High-frequency bias supply circuit
01/07/1993EP0521653A2 Gain control amplifier
01/07/1993EP0521215A1 Disk drive read circuit with programmable differentiator delay
01/07/1993DE4121273A1 Amplifier circuitry for optical receiver
01/05/1993US5177453 Gain control amplifier
01/05/1993US5177452 Stabilized circuit of high output power transistor for microwave and milliwave
01/05/1993US5177451 Unity gain amplifier with high slew rate and high bandwidth
01/05/1993US5177450 Cmos power amplifier
01/05/1993US5177449 Radio frequency amplifier circuit
01/05/1993US5177374 Current mode gate drive for power mos transistors
01/05/1993CA1312359C Operational amplifier stages
01/05/1993CA1312358C Transimpedance amplifier with noise reduction and bandwidth compensation
01/04/1993WO1993006632A1 Rf radiation absorbing material
12/1992
12/30/1992EP0520751A1 Integrating filter circuit
12/30/1992EP0520308A2 Amplifying circuit device
12/30/1992CN1067535A Regulated amplifier circuit
12/29/1992US5175604 Field-effect transistor device
12/29/1992US5175533 TO-CMOS buffers, comparators, folded cascode amplifiers, systems and methods
12/29/1992US5175489 Current-detecting circuit
12/29/1992CA2072266A1 Five-volt tolerant differential receiver
12/23/1992WO1992022937A1 High isolation switch
12/23/1992WO1992022830A1 Windshear radar system with upper and lower elevation radar scans
12/23/1992WO1992022823A1 Modular solid state radar transmitter
12/23/1992EP0519471A1 Amplification circuit
12/23/1992EP0519170A1 Broadband phase shifter and vector modulator
12/23/1992EP0519088A1 Procedure and circuit for limiting an output signal
12/23/1992EP0504370A4 A field emission device employing a layer of single-crystal silicon
12/23/1992EP0306519B1 Current sensing differential amplifier
12/23/1992CN1067348A Color difference signal matrix and buffer circuit for television apparatus
12/22/1992US5173655 Current regulator
12/22/1992CA1311846C Operational amplifier
12/16/1992EP0518673A1 Fast buffer
12/15/1992US5172076 Resonant circuit formed of two amplifiers connected in a loop and multiple resonator circuits constructed therefrom
12/15/1992US5172074 Low noise multi-stage type amplifier
12/15/1992US5172073 Amplifying circuit
12/15/1992US5172019 Bootstrapped FET sampling switch
12/15/1992US5172017 Integrated circuit arrangement including a differential amplifier which generates a constant output voltage over a large temperature range
12/15/1992US5172016 Five-volt tolerant differential receiver
12/11/1992CA2070700A1 Method and circuit arrangement for limiting an output signal
12/10/1992DE4218533A1 Schaltkondensator-schaltkreis mit chopperstabilisiertem verstaerker Switched capacitor circuitry with chopperstabilisiertem verstaerker
12/10/1992DE4210215A1 Low voltage differential amplifier with limited output voltage - has reference voltage comparator for regulation of currents drawn by current mirror transistors in collector circuits
12/09/1992EP0517599A1 Broadband amplifier with automatic control of the gain and the offset
12/09/1992EP0516848A1 Transistor saturation-preventing circuit
12/09/1992CN1066944A Large dynamic differential amplifier
12/09/1992CN1066943A Low voltage power amplifier
12/08/1992US5170337 Low-inductance package for multiple paralleled devices operating at high frequency
12/08/1992US5170229 Junction field effect transistors with injector region
12/08/1992US5170134 Buffer circuit
12/08/1992US5170133 Low-noise amplifier with high input impedance, particularly for microphones
12/08/1992US5170132 Chopper amplifier circuit for the supply of a current proportional to a voltage
12/08/1992US5170081 Ground isolation circuit
12/08/1992CA2070611A1 Automatic gain and offset voltage control wideband amplifier circuit
12/02/1992EP0516423A1 Composite differential amplifier
12/02/1992EP0516134A1 RF power amplifier
12/02/1992EP0515853A1 Protection arrangement for an audio output channel
12/02/1992EP0487688A4 Low offset unity gain buffer amplifier
12/02/1992CN2123839U Circnit amplifier for closed cable television antenna system
12/02/1992CN1066755A Protection arrangement for audio output channel
12/02/1992CN1019347B Offset-voltage-balancing operational amplifier
12/02/1992CN1019339B Regulating circuit
12/01/1992US5168250 Broadband phase shifter and vector modulator
12/01/1992US5168244 Electric circuit fabricated from magneto-resistive elements and active circuit elements
12/01/1992US5168243 Integrated high gain amplifier
12/01/1992US5168242 Active-type broadband power divider
12/01/1992US5168179 Balanced modulator for auto zero networks
12/01/1992US5168153 Integrator and image read device
12/01/1992CA1311039C Optical amplifier with reduced nonlinearity
11/1992
11/26/1992WO1992021177A1 Drive amplifier for power line communications
11/25/1992EP0515065A1 Bias start-up circuit
11/25/1992EP0514818A1 Programmable amplifier
11/25/1992EP0514655A1 Semiconductor device for TV tuner and TV tuner using the same
11/25/1992EP0500700A4 High fidelity hearing aid amplifier
11/25/1992EP0282529B1 Auto zero circuit for flow meter
11/25/1992CN1066539A Common bias circuit for plurality of discrete ic's each having their own bias circuitry
11/25/1992CA2069123A1 Programmable amplifying device
11/24/1992US5166819 Front end for a broadband optical receiver
11/24/1992US5166640 Two dimensional distributed amplifier having multiple phase shifted outputs
11/24/1992US5166639 High gain mololithic microwave integrated circuit amplifier
11/24/1992US5166638 Differential amplifier having output stage quickly brought into inactive condition by a control signal
11/24/1992US5166636 Dynamic biasing for class a amplifier
11/24/1992US5166635 Digital data line driver
11/24/1992US5166559 Servo circuit having variable gain amplifier and temperature compensation characteristics
11/24/1992US5166553 Current mirror circuit employing depletion mode FETs
11/24/1992CA1310713C Signal feedback amplifier for a cable-tv converter
11/19/1992EP0513856A2 Use of a transmit signal amplifying apparatus, transmit subsystem and method for amplifying transmit signals
11/18/1992CN2122452U Hi-fi vacuum tube power amplifier
11/17/1992US5165054 Circuits for linear conversion between currents and voltages
11/17/1992US5164689 N-way power combiner/divider
11/17/1992US5164683 RF amplifier assembly
11/17/1992US5164681 Voltage-current conversion circuit
11/17/1992US5164679 AC power amplifier having current limit control
11/17/1992US5164658 Current transfer circuit
11/17/1992US5164614 Low power bias voltage generating circuit comprising a current mirror
11/17/1992CA1310376C2 Current gain compensation amplifier