| Patents for H03G 1 - Details of arrangements for controlling amplification (4,021) |
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| 05/27/1980 | US4205269 Remote control variable attenuation device for an antenna amplifier |
| 04/17/1980 | WO1980000768A1 Device for remote control of stereo hi-fi amplifier parameters |
| 04/15/1980 | US4198652 D.C. Gain controlled amplifier |
| 04/15/1980 | US4198603 Radio receiver audio attenuator |
| 04/08/1980 | US4197505 Limiter circuit |
| 03/19/1980 | EP0008913A1 Variable level converter |
| 03/18/1980 | CA1073973A1 Current control circuit |
| 01/29/1980 | US4186274 Sound system control |
| 01/08/1980 | CA1069593A1 Unmatched field effect transistors providing matched voltage-controlled resistances |
| 12/25/1979 | US4180804 Remote control device for an amplifier trap circuit |
| 12/18/1979 | US4179668 HF-amplifier circuit |
| 12/18/1979 | US4179650 Variable impedance circuits |
| 12/11/1979 | US4178608 Contrast/color control for a television receiver |
| 11/13/1979 | CA1066401A1 Gain control arrangement useful in a television signal processing system |
| 09/25/1979 | US4169247 Gain control circuit in combination with a differential amplifier |
| 09/19/1979 | EP0004099A1 Electrically variable impedance circuit |
| 09/18/1979 | US4168472 Variable gain controller |
| 08/22/1979 | EP0003509A1 Gain control circuit for a plurality of cascade-coupled amplifying stages |
| 07/24/1979 | USRE30054 Control device |
| 06/05/1979 | US4157557 Control circuit for signal transmission |
| 05/22/1979 | US4156283 Multiplier circuit |
| 05/22/1979 | CA1055115A1 Alternating current control circuits |
| 05/15/1979 | US4155047 Voltage controlled attenuator |
| 05/15/1979 | CA1054711A1 Limiter circuit |
| 05/01/1979 | US4152667 Gain-controlled signal amplifier |
| 05/01/1979 | US4152664 Constant power balance control and method |
| 04/24/1979 | US4151481 Digital gain control system |
| 04/17/1979 | US4150336 AM/FM Intermediate frequency gain stage |
| 04/10/1979 | CA1052457A1 Sensing circuit with four terminal semi-conductor device |
| 04/03/1979 | US4147991 Automatic gain control apparatus |
| 03/20/1979 | US4145665 Regulating amplifier |
| 02/20/1979 | US4141023 Field effect transistor having a linear attenuation characteristic and an improved distortion factor with multiple gate drain contacts |
| 02/20/1979 | US4140960 Current control circuit |
| 02/13/1979 | US4139824 Gain control circuit |
| 01/30/1979 | US4137466 Controllable electronic resistance device |
| 01/09/1979 | US4134078 Gain control circuit |
| 01/02/1979 | US4132963 Gain controlled signal amplifier |
| 01/02/1979 | US4132957 Programmable amplifier |
| 12/26/1978 | US4131809 Symmetrical arrangement for forming a variable alternating-current resistance |
| 10/17/1978 | US4121183 Programmable attenuator apparatus employing active FET switching |
| 10/17/1978 | US4121161 AM receiver |
| 09/26/1978 | US4117416 Current mirror amplifiers with programmable current gains |
| 09/26/1978 | CA1039411A1 Solid-state potentiometer for coupling circuits having isolated electrical grounds |
| 09/12/1978 | CA1038461A1 Gain control circuits |
| 09/05/1978 | US4112387 Bias circuit |
| 09/05/1978 | CA1038048A1 Controllable gain signal amplifier |
| 08/29/1978 | CA1037571A1 Controllable gain signal amplifier |
| 08/22/1978 | US4109214 Unbalanced-to-balanced signal converter circuit |
| 08/15/1978 | US4107618 Amplifier system having signal gain independent of a reference voltage |
| 08/01/1978 | US4104597 Variable sensitivity monitor circuit |
| 07/18/1978 | US4101842 Differential amplifier |
| 07/18/1978 | US4101841 Gain control circuit |
| 07/11/1978 | US4100433 Voltage to current converter circuit |
| 05/23/1978 | US4091295 Transistor circuit |
| 05/02/1978 | US4087793 Digital electronic control and switching arrangement |
| 05/02/1978 | US4087737 Phase shifting circuit |
| 04/18/1978 | US4085366 Noise reduction device for citizen's band transceivers |
| 04/18/1978 | US4085340 Range switching transient eliminator circuit |
| 04/11/1978 | US4084129 Voltage controlled variable gain circuit |
| 04/11/1978 | US4084111 Apparatus for the digital control of analog signal |
| 02/21/1978 | US4075574 Wideband differential amplifier |
| 01/24/1978 | US4070633 Remote controlled amplifier |
| 01/10/1978 | US4068139 IC compatible variable shunt impedance for Dolby B system |
| 01/03/1978 | US4067000 Remote control transmitter with an audible battery life indicator |
| 01/03/1978 | US4066914 Electrically variable impedance circuits |
| 12/27/1977 | US4065725 Gain control circuit |
| 12/06/1977 | US4062042 D.C. controlled attenuator |
| 10/25/1977 | US4055813 Single adjustment multiple function calibration circuit |
| 10/11/1977 | US4053846 Amplifier apparatus |
| 09/27/1977 | US4051519 Phase control circuit suitable for use in a tint control stage of a color television system |
| 09/27/1977 | US4051442 Gain control circuits for audio amplifiers |
| 09/13/1977 | US4048576 Transistor amplifier stage with selectively adjustable gain control circuit |
| 09/06/1977 | US4047131 Voltage-controlled HF-signal attenuator |
| 08/09/1977 | US4041409 Automatic gain control circuit |
| 08/02/1977 | US4040081 Alternating current control circuits |
| 07/26/1977 | US4038566 Multiplier circuit |
| 07/19/1977 | US4037167 Automatic gain control amplifier |
| 07/05/1977 | US4034308 Amplifier with controllable transmission factor and switchable control characteristic |
| 06/28/1977 | US4032953 Sensing circuits |
| 06/28/1977 | US4032891 Signal transmitter using an active thick film substrate |
| 06/28/1977 | US4032854 Amplification and gain control circuit |
| 06/28/1977 | US4032838 Device for generating variable output voltage |
| 06/28/1977 | US4032799 Automatic gain control circuit |
| 05/10/1977 | US4023112 Broad band amplifier having negative feedback and a controllable amplification factor |
| 05/03/1977 | US4021749 Signal amplifying circuit |
| 04/19/1977 | US4019160 Signal attenuator circuit for TV tuner |
| 04/12/1977 | US4017804 Broad band variable gain amplifier |
| 04/05/1977 | US4016481 Unmatched field effect transistors providing matched voltage-controlled resistances |
| 03/22/1977 | US4013975 Variable resistance circuit |
| 03/22/1977 | US4013972 Amplifier with gain control means |
| 03/08/1977 | US4011519 Transistor amplifier circuit |
| 12/21/1976 | US3999141 Controllable gain signal amplifier |
| 12/14/1976 | US3997852 RF amplifier |
| 11/16/1976 | US3992584 Automatic microphone mixer |
| 10/26/1976 | US3988692 Gain control circuits |
| 10/19/1976 | US3987414 Digital remote control for electronic signal receivers |
| 10/12/1976 | US3986060 Compound transistor circuitry |
| 09/28/1976 | US3983421 Remote audio attenuator |
| 09/14/1976 | US3980955 Control device |
| 09/07/1976 | US3979764 Controlled fading switching circuit |