| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
|---|
| 04/14/1981 | US4262262 Electric amplifier |
| 04/07/1981 | US4260954 Amplifier load correction system |
| 04/07/1981 | US4260953 Automatic gain control circuit |
| 04/07/1981 | CA1098965A1 Linear signal isolator and calibration circuit for electronic current transformer |
| 04/02/1981 | WO1981000807A1 Signal processing equipment for ultrasonic visualisation |
| 04/01/1981 | EP0025977A2 Gain controlled amplifier |
| 03/31/1981 | US4259742 Electronic switching system for reducing noise transients |
| 03/31/1981 | US4259642 Repeater feedback circuit |
| 03/25/1981 | EP0025681A2 Digitally controlled wide range automatic gain control |
| 03/25/1981 | EP0025607A2 Method of and circuit for automatic gain control in electronic equipments |
| 03/25/1981 | EP0025582A1 Arrangement for on/off switching and volume control of an amplifier in telecommunication devices by means of a single non-locking push- button |
| 03/24/1981 | US4258397 Automatic recording level controlling circuit |
| 03/24/1981 | US4258329 Noise suppression system |
| 03/17/1981 | US4257009 Inhibit circuit for a differential amplifier |
| 03/17/1981 | US4256975 Limiter circuit for removing nose from demodulated signals |
| 03/17/1981 | US4256389 Method and system of controlling sound and effects devices by a film strip |
| 03/17/1981 | CA1097831A1 Tuning apparatus for selecting preset broadcast frequencies |
| 03/10/1981 | US4255716 Automatic gain control circuit |
| 03/03/1981 | US4254303 Automatic volume adjusting apparatus |
| 02/17/1981 | US4251690 Frequency-modulation stereophonic receiver |
| 02/17/1981 | US4250952 Strand guiding means for guiding a strand in a continuous casting plant |
| 02/17/1981 | CA1096036A1 Dynamic transducer biasing signal amplifying circuitry |
| 02/17/1981 | CA1095999A1 Phase locked loop circuit |
| 02/10/1981 | US4250471 Circuit detector and compression-expansion networks utilizing same |
| 02/10/1981 | US4250411 Dynamic resistor current leakage compensation arrangement |
| 02/04/1981 | EP0023215A1 Signal processing system with multichannel electronic attenuator and stored controls |
| 02/03/1981 | US4249264 Method and system for transmitting signals by fiber optics |
| 02/03/1981 | US4249261 Superheterodyne radio receiver with nearby-station interference detection |
| 02/03/1981 | US4249137 Amplifier system with AGC, as for an AM radio |
| 01/28/1981 | EP0022866A1 Amplitude control circuits |
| 01/28/1981 | EP0022840A1 Multiple program audio system |
| 01/27/1981 | US4247955 Apparatus for matching the sound output of a radio receiver to the ambient noise level |
| 01/27/1981 | US4247954 Active window antenna for motor vehicles |
| 01/27/1981 | US4247818 Automatic sensitivity adjustment apparatus for calibration of a non-destructive inspection instrument |
| 01/20/1981 | US4246611 Digital control system and a method of transmitting control data in such a system |
| 01/20/1981 | US4246543 Delayed AGC circuit |
| 01/20/1981 | US4246441 FM Receiver equipped with noise pulse supression device |
| 01/20/1981 | CA1094177A1 Phase locked loop circuit |
| 01/13/1981 | US4245353 Amplitude tilt correction apparatus |
| 01/13/1981 | US4245350 Automatic gain control system for direct-access television receiver |
| 01/13/1981 | US4245170 Detector |
| 01/07/1981 | EP0021085A2 Monolithically integratable transistor amplifier |
| 01/06/1981 | US4243947 Radio frequency amplifier with gain control |
| 01/06/1981 | US4243045 Method and apparatus for the suppression of interference signals in a useful signal |
| 12/30/1980 | US4242643 Variable gain current amplifier |
| 12/23/1980 | US4241453 Citizens band radio receiver with squelch control |
| 12/23/1980 | US4241320 Circuit arrangement for establishing weighting coefficients in an analog-type adaptive equalizer |
| 12/23/1980 | CA1092203A1 Gain ranging amplifier system |
| 12/16/1980 | US4240037 Homomorphic automatic gain control |
| 12/16/1980 | US4239937 Stereo separation control |
| 12/16/1980 | CA1091801A1 Circuit for accurately extracting the synchronization information contained within a composite video waveform |
| 12/10/1980 | EP0019630A1 Intermediate frequency sensing circuit |
| 12/09/1980 | US4238771 Muting circuit |
| 12/09/1980 | CA1091340A1 Television receiver having a synchronous detection circuit and a frequency deviation-detection circuit |
| 12/02/1980 | US4237555 Automatic modulation system |
| 12/02/1980 | CA1090917A1 Positive feedback high gain agc amplifier |
| 12/02/1980 | CA1090892A1 Differential amplifier |
| 11/26/1980 | EP0019261A1 Adjustable attenuator for a digital telecommunication exchange, especially a telephone exchange |
| 11/25/1980 | US4236254 Radio receiver blanker inhibit circuit |
| 11/25/1980 | US4236088 Noise-free switching circuit for and method of electronically selecting audio input signals in audio systems |
| 11/25/1980 | US4236069 Avalanche photodiode gain control system |
| 11/18/1980 | US4234853 Automatic level control circuit |
| 11/18/1980 | CA1089935A1 Transceivers for single channel carrier telephone systems |
| 11/12/1980 | EP0018716A2 Noise blanker which tracks average noise level |
| 11/12/1980 | EP0018702A1 Improvements in and relating to noise blanking circuitry in a radio receiver |
| 11/12/1980 | EP0018608A2 A noise removing apparatus |
| 11/12/1980 | EP0018570A1 Circuit for suppressing interference signals |
| 11/04/1980 | US4232393 Muting arrangement of a radio receiver with a phase-locked loop frequency synthesizer |
| 11/04/1980 | US4232381 Noise cancellation using tracking filter |
| 11/04/1980 | US4232191 FM Receiving device |
| 11/04/1980 | CA1089038A1 Controllable electronic resistance device |
| 11/04/1980 | CA1089020A1 Digital electronic control and switching arrangement |
| 10/28/1980 | CA1088639A1 Gain control circuit |
| 10/21/1980 | US4229822 Data detector for a data communication system |
| 10/21/1980 | US4229707 Automatic gain control circuit |
| 10/21/1980 | US4229697 Magnetometer instrumentation with digitally controlled range changing |
| 10/15/1980 | EP0017596A1 Low noise photoreceiver |
| 10/14/1980 | US4228545 Receiver device having a function for suppressing transient noises during abrupt interruptions |
| 10/07/1980 | US4227256 AM Broadcast tuner with automatic gain control |
| 10/07/1980 | US4227205 Hue and saturation control circuitry requiring single coupling capacitor |
| 10/07/1980 | US4227048 Audio signal transmission circuit having a constant level tone-controlled output signal |
| 10/01/1980 | EP0016705A1 R.F. stage with automatic gain control and receiver comprising such a circuit |
| 09/30/1980 | US4225975 Noise suppression circuit for use with FM receiver |
| 09/30/1980 | US4225865 Gain-controlled amplifier circuits |
| 09/30/1980 | US4225822 Amplitude modulation circuit for a transmitter |
| 09/30/1980 | US4225794 Voltage controlled amplifier |
| 09/23/1980 | US4224578 Gain control |
| 09/23/1980 | US4224470 Headset with limiter circuit |
| 09/23/1980 | CA1086417A1 Automatic threshold means and the use thereof |
| 09/16/1980 | US4223274 Amplifier for electrical signals |
| 09/16/1980 | CA1085742A1 Ear pads with earphones |
| 09/09/1980 | US4221930 FM Defect compensation apparatus |
| 09/02/1980 | US4220926 Noise detector employing plural delay circuits |
| 09/02/1980 | CA1085004A1 Amplifier with muting circuit |
| 08/26/1980 | US4219781 Transistor amplifier circuit |
| 08/26/1980 | US4219780 Gain controlled amplifier circuits |
| 08/19/1980 | US4218774 Automatic gain control circuit |
| 08/19/1980 | US4218708 Keyed AGC circuit |
| 08/19/1980 | US4218140 Light meter |
| 08/07/1980 | WO1980001632A1 Signal processing system with multichannel electronic attenuator and stored controls |