Patents
Sitemap › H03 - Basic electronic circuitry › H03G - Control of amplification › H03G 3 - Gain control in amplifiers or frequency changers
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
08/1990
08/16/1990EP0382302A2 Differential amplifier using voltage level shifting to achieve rail-to-rail input capability at very low power supply voltage
08/08/1990EP0380819A1 Circuit with controllable active and/or passive elements
08/08/1990EP0380530A1 A method of demultiplex processing of information and equipment for performing the method
08/08/1990EP0380475A1 Fm communications system with improved response to rayleigh-faded received signals
08/07/1990US4947440 Shaping of automatic audio crossfade
08/07/1990US4947431 Audio processing circuit for an FM stereo receiver
08/07/1990US4947136 Variable gain distributed amplifier
08/07/1990US4947133 Method and apparatus for automatic signal level adustment
07/1990
07/31/1990CA1272254A1 Automatic control circuitry for a signal power amplifier
07/24/1990US4944018 Speed controlled amplifying
07/18/1990EP0377965A2 Combined deemphasis circuit and noise blanker
07/17/1990US4942368 Signal feedback amplifier for a cable-TV converter
07/17/1990CA1271845A1 Electronic sound synthesizer
07/12/1990WO1990007824A1 Electronic audio signal amplifier and loudspeaker system
07/11/1990EP0377205A1 Current limiter and optical receiver using it
07/11/1990EP0377165A2 Gain controller
07/11/1990CN1043816A Processing circuit for signal
07/10/1990CA1271547A1 Radar system with incremental automatic gain control
07/03/1990US4939577 Receiver and demodulation circuit suitable for said receiver
07/03/1990US4939480 Method and apparatus for amplifying signals
07/03/1990US4939475 Circuit arrangement comprising an amplifier connected to an opto-electrical transducer
06/1990
06/28/1990WO1990007231A1 Improved variolosser
06/27/1990CN1008586B Agc in digital signal processor
06/26/1990US4937875 Audio signal processing apparatus
06/20/1990CN1043236A Digital automatic gain control
06/19/1990US4934770 Electronic compression system
06/19/1990CA1270537A1 Automatic gain control apparatus
06/19/1990CA1270527A1 Method and apparatus for regulating a single sideband up converter
06/14/1990WO1990006644A1 Digital automatic gain control
06/14/1990WO1990006641A1 Agc isolation of information in tdma systems
06/13/1990EP0372793A2 Amplifier with modulated resistor gain control
06/13/1990EP0372759A2 Agc isolation of information in tdma systems
06/13/1990EP0372705A2 RF amplifier bias circuit
06/12/1990US4933987 Remote pressure actuated audio control for a vehicle sound amplification system
06/12/1990US4933986 Gain/phase compensation for linear amplifier feedback loop
06/12/1990US4933647 AGC circuit
06/06/1990EP0371700A2 Digital automatic gain control
06/05/1990US4932039 Pulse interference canceler of high power out-of-band pulse interference signals
05/1990
05/31/1990WO1990006018A1 Power amplifier for a radio frequency signal
05/29/1990US4929908 Gain controllable amplifier circuit
05/23/1990EP0369716A2 Amplifying circuit
05/23/1990EP0369469A2 Variable gain amplifier
05/23/1990EP0369135A2 Power amplifier for a radio frequency signal
05/22/1990US4928307 Time dependent, variable amplitude threshold output circuit for frequency variant and frequency invariant signal discrimination
05/22/1990US4928074 Automatic gain control circuit
05/22/1990CA1269453A1 Automatic gain control delay circuit for a video signal processor
05/22/1990CA1269442A1 Agc in sound channel of system for processing a scrambled video signal
05/17/1990DE3838103A1 Digitally controllable video amplifier
05/16/1990EP0368528A2 Audio amplifier with mute and stand-by states
05/15/1990US4926485 Output level control apparatus
05/15/1990US4926139 Electronic frequency filter
05/10/1990DE3923207A1 Automatic sound level adjuster for car audio system - has ARI receiver and variable amplifying circuit deriving compensating valve from noise and audio signals
05/09/1990EP0367330A1 Linear-gain amplifier arrangement
05/09/1990EP0366680A1 A nonvolatile nonlinear reprogrammable electronic potentiometer
05/08/1990US4924192 Adjusting apparatus for adjusting sound volume or sound quality
05/08/1990US4924190 Amplifiers
05/03/1990WO1990004887A1 Digital fm squelch detector
05/02/1990EP0366453A2 Variable gain current-to-voltage amplifier with gain independent test mode operation
05/02/1990EP0366025A2 An automatic gain control (AGC) for frequency hopping receiver
05/01/1990US4922549 Digital FM squelch detector
05/01/1990US4922131 Differential voltage threshold detector
04/1990
04/25/1990EP0365085A2 Signal amplitude controlling circuit
04/25/1990EP0364711A1 Signal level adjustment circuit arrangement
04/24/1990US4920309 Error amplifier for use with parallel operated autonomous current or voltage regulators using transconductance type power amplifiers
04/18/1990EP0363714A2 Integrated compression amplifier with a programmable threshold
04/17/1990US4918398 Differential amplifier using voltage level shifting to achieve rail-to-rail input capability at very low power supply voltage
04/17/1990US4918397 Gain control circuit
04/10/1990US4916409 Signal conditioner system for musical instruments
04/10/1990US4916407 Gain variation compensating circuit for a feedforward linear amplifier
04/10/1990US4916406 Automatic gain control circuit
04/04/1990EP0361452A2 Digital automatic gain control apparatus and method
03/1990
03/28/1990EP0360178A2 Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
03/28/1990EP0359836A1 Circuitry with an amplifier connected to an optoelectric transducer
03/28/1990EP0202266B1 Automatic gain control amplifier circuit
03/27/1990US4912431 Control amplifier
03/27/1990US4912393 Voltage regulator with variable reference outputs for a hearing aid
03/21/1990EP0359477A2 Linearization of an amplification in an RF amplifier
03/20/1990US4910799 Noise reduction apparatus
03/20/1990US4910797 Automatic Gain control system
03/20/1990US4910478 Amplifier circuit and method of controlling output power thereof
03/20/1990CA1266885A1 Output power control circuit for a mobile radio apparatus
03/13/1990CA1266707A1 Method of calibrating and equalizing a multi-channel automatic gain control amplifier
03/07/1990CN1007110B Amplifier arrangement
03/06/1990US4907249 Automatic off/on circuit for monitoring data receiving and storing devices
02/1990
02/27/1990US4905291 Cyberoptic audio level control system
02/27/1990US4905086 Television transmitter employing klystron with nonlinearity correction circuit
02/27/1990US4904992 Radio with message reception and ambient noise level controlled indicator
02/27/1990US4904954 Ultrasonic signal amplifier circuit and system of gain control thereof
02/20/1990US4903302 Arrangement for controlling the amplitude of an electric signal for a digital electronic apparatus and corresponding method of control
02/20/1990US4902982 Nonlinear noninverting transimpedance amplifier
02/14/1990EP0354513A2 Gain controlled amplifier circuit
02/14/1990CN1039665A Bidirectional dc power controller with fault protection
02/13/1990US4901350 Closed-loop audio attenuator
02/13/1990US4901032 Digitally controlled variable power amplifier
02/07/1990EP0353808A1 Current compensating circuit
02/06/1990US4899389 Pulsating noise removal device
01/1990
01/31/1990EP0353164A2 Volume control for sound reproducing apparatus
01/30/1990CA1265226A1 Log magnitude pulse interference detection for a radar system
01/23/1990US4896118 Variable gain current-to-voltage amplifier with gain independent test mode operation
01/16/1990CA1264491A1 Digital clip and gain circuit
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