Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
07/1986
07/22/1986US4602172 High input impedance circuit
07/22/1986CA1208315A1 Amplifier circuit
07/15/1986US4600893 Differential amplifier with improved dynamic range
07/15/1986US4600847 Predistortion equalizing circuit
07/15/1986CA1207850A1 Feedback amplifier
07/15/1986CA1207849A1 Wideband kinescope driver amplifier
07/08/1986US4599578 Protection circuit
07/08/1986US4599577 Transistorized amplification stage with improved polarization device
07/08/1986US4599575 Broad-band differential amplifier with double reverse feed-back of common mode
07/08/1986US4599572 Voltage adder circuit
07/08/1986US4599571 Level compensation circuit
07/08/1986CA1207391A1 High efficiency radio frequency signal amplification apparatus
07/08/1986CA1207384A1 Power supply circuit
07/02/1986EP0185908A2 High frequency energy source
07/01/1986US4598255 Power amplifier apparatus
06/1986
06/25/1986EP0185412A1 Circuit arrangement for reducing the occurrence of spurious signals on an output of an electronic circuit when the circuit power supply is switched on and off
06/25/1986EP0185411A1 Switching device for suppressing a signal
06/24/1986US4596961 Amplifier for modifying a signal as a function of temperature
06/24/1986US4596956 Current amplifiers
06/24/1986US4596939 Schmitt trigger input gate having delayed feedback for pulse width discrimination
06/24/1986CA1206543A1 Tunable active filter
06/24/1986CA1206537A1 Device for compensating temperature drifts of the gain of an ultra-high frequency electric signal amplifier
06/17/1986US4596043 High efficiency radio frequency signal amplifier for amplifying modulated radio frequency signals in a manner generating minimal splatter
06/17/1986US4595883 Emitter-follower type single-ended push-pull circuit
06/17/1986US4595882 Phase adjusted feedforward error correction
06/17/1986US4595874 Temperature insensitive CMOS precision current source
06/17/1986CA1206217A1 Differential operational amplifier with common mode feedback
06/11/1986EP0184483A1 Low-noise broadband amplifier for metric waves
06/10/1986US4594562 Amplifier with current-voltage conversion, particularly preamplifier of an optical receiver
06/10/1986US4594561 Audio amplifier with resistive damping for minimizing time displacement distortion
06/10/1986US4594560 Precision setting of the bias point of an amplifying means
06/10/1986US4594558 High-switching-speed d.c. amplifier with input-offset current compensation
06/10/1986CA1205879A1 Gate-coupled field-effect transistor pair amplifier
06/04/1986EP0182908A1 Fiber optic communication module
06/03/1986US4593252 Enhanced transconductance amplifier
06/03/1986US4593250 Operational amplifier compensation technique for biquadratic notch active filters
05/1986
05/28/1986EP0182427A1 Amplifier arrangement
05/28/1986EP0181951A1 High-frequency power amplifier
05/27/1986US4591802 Feedback amplifier circuit including cascade connected field effect transistors
05/27/1986US4591801 Differential amplifier circuit
05/27/1986US4591800 Linear power amplifier feedback improvement
05/27/1986US4591743 Temperature compensated current sensing circuit
05/27/1986US4591710 Ambient light and electromagnetic noise reduction circuit
05/21/1986EP0181807A1 Device for the selective amplification of radioelectrical signals
05/21/1986EP0181752A2 Extended range amplifier circuit
05/21/1986EP0181613A2 Improved power amplifier circuit
05/21/1986EP0181608A1 Reference load amplifier correction systemand method
05/21/1986EP0181458A2 Suppressed-fundamental frequency three-way predistorter
05/20/1986US4590437 High frequency amplifier
05/20/1986US4590435 High input impedance differential amplifier
05/20/1986US4590434 High dynamic range amplifier with low noise and low distortion
05/14/1986EP0181206A2 Semiconductor devices
05/14/1986EP0181171A2 Fast settling reference amplifier
05/14/1986EP0180875A2 Improved frequency response amplifier
05/13/1986US4588960 Output circuits of class B type electronic amplifiers
05/13/1986US4588959 Hum neutralization circuit
05/13/1986US4588958 Adjustable reflective predistortion circuit
05/10/1986CN85107828A Precompensator with three terminal and a fondamental depressor
05/06/1986US4587495 Cascode amplifier with an improved biasing arrangement
05/06/1986US4587491 IC class AB amplifier output stage
04/1986
04/29/1986US4586004 Logic and amplifier cells
04/29/1986US4586003 On-off rapidly switchable amplifier circuit with d-c feedback
04/29/1986US4586002 Audio amplifying apparatus and method
04/29/1986CA1203855A1 Buffer circuit
04/29/1986CA1203845A1 Electronic power overload protection circuit
04/22/1986US4584541 Digital modulator with variations of phase and amplitude modulation
04/22/1986CA1203583A1 Current-limiting mechanism for a precision differential amplifier
04/15/1986US4583052 Amplifier having complete isolation of power sources
04/15/1986US4583051 Extended range amplifier circuit
04/15/1986US4583049 Feed-forward circuit
04/10/1986WO1986002215A1 Current source with adjustable temperature coefficient
04/10/1986WO1986002214A1 High-frequency amplifier
04/09/1986EP0176915A2 Circuit arrangement for offset correction of an integrated operational amplifier
04/09/1986EP0176708A1 Temperature protection circuit with hysteresis
04/08/1986US4581595 Phase shift network with minimum amplitude ripple
04/08/1986US4581590 Multiple power supply power amplifier circuit
04/08/1986US4581587 Solid state electrical musical instrument amplifier
04/08/1986US4581541 Switch device equipped with muting function
04/01/1986US4580105 Automatic reduction of intermodulation products in high power linear amplifiers
04/01/1986US4580104 High voltage operational amplifier
04/01/1986US4580103 Amplifier circuit arrangement for eliminating input signal offset in the output
03/1986
03/26/1986EP0174953A1 Compensation current generator
03/25/1986US4578647 Amplifier circuit
03/25/1986US4578576 Bar code reader with diode feedback in amplifier
03/25/1986CA1202379A1 Output power control circuit for power amplifier
03/18/1986US4577296 Compensation current generator
03/18/1986US4577162 Clocked gain stage having differential inputs and outputs
03/18/1986US4577160 Method of and apparatus for low noise current amplification
03/18/1986US4577159 Low drift broadband amplifier
03/11/1986US4575687 Voltage adjustable capacitance for frequency response shaping
03/11/1986US4575686 Output stage for power amplifiers
03/11/1986US4575685 Arrangement for cancelling the input bias current, at picoampere levels, in an integrated circuit
03/11/1986CA1201775A1 Monolithic integrated circuit device including ac negative feedback type high frequency amplifier circuit
03/05/1986EP0173370A1 Amplifier arrangement
03/04/1986US4574253 Broadband control amplifier
03/04/1986US4574249 Nonintegrating lightwave receiver
03/04/1986US4574205 Temperature detecting transistor circuit
03/04/1986CA1201492A1 Distortion compensation for a microwave amplifier
02/1986
02/27/1986WO1986001353A1 Optical receivers
02/26/1986EP0172694A1 Optical receivers