| Patents for H03G 1 - Details of arrangements for controlling amplification (4,021) |
|---|
| 06/26/1991 | EP0434294A2 A power control method for a voltage controlled power amplifier and circuitry used in the method |
| 06/26/1991 | EP0434266A2 An audio system for amplifying an audio signal |
| 06/25/1991 | US5027083 General purpose low cost digital amplitude regulator |
| 06/11/1991 | US5023569 Variable gain amplifier |
| 06/04/1991 | US5021747 Symmetrical variable impedance apparatus employing MOS transistors |
| 05/29/1991 | DE3937054C1 Variable HF amplifier with negative feedback - comprises two emitter stages with feedback from second to first via variable resistor |
| 05/16/1991 | DE4010001C1 Amplifier with stepped adjustable gain - provided by three stages switched in cascade and comprising intermediate attenuator between input and output amplifiers |
| 04/30/1991 | US5012181 Apparatus for and method of internally calibrating an electrical calibrator |
| 04/24/1991 | EP0424331A1 A MOS integrated circuit with switched capacitors, having a full-wave-rectifying and integrating function |
| 04/23/1991 | US5010306 Low cost digital amplitude regulator |
| 04/11/1991 | DE3933657A1 Digital vol. adjustment circuit for audio amplifier - has photoresistor as vol. adjuster in input circuit of inverting operational amplifier |
| 04/09/1991 | US5006815 Linear-gain amplifier arrangement |
| 04/09/1991 | US5006727 Circuit arrangement for adjusting the amplitude of a signal |
| 04/03/1991 | EP0420343A2 Electronic control circuit for audio-signal level |
| 04/03/1991 | EP0420341A1 Balanced filter circuit |
| 04/03/1991 | EP0420106A1 Attenuator using a dual gate field effect transistor |
| 03/27/1991 | EP0418403A1 Remote control device for a television receiver |
| 03/27/1991 | CA2026129A1 Two-gate field effect transistor attenuator |
| 03/26/1991 | US5003270 RF power-control circuit |
| 03/19/1991 | US5001774 Stereo headphone remote control circuit |
| 03/19/1991 | US5001440 Audio amplifier limiting for a remote power amplifier |
| 03/19/1991 | CA2023396A1 Variable gain distributed amplifier |
| 02/26/1991 | US4996501 Amplifier circuit having gain control |
| 02/26/1991 | US4996500 For output power level of a signal generator |
| 02/19/1991 | US4994756 Circuit arrangement for amplifying a television signal |
| 02/07/1991 | DE3925565A1 Circuit decoupling electronic components - has first ROM with correction matrix, whose elements represent correction magnitudes |
| 01/30/1991 | CN1011455B Bandwidth limiting ciruit with variable bandwidth |
| 01/29/1991 | US4989264 Bandwidth limiting circuit with variable bandwidth |
| 01/22/1991 | US4987380 Gain controlled amplifier circuit |
| 01/08/1991 | US4983928 Controllable amplifier circuit |
| 12/18/1990 | CA1277918C Circuits to provide desired conductance characteristics using a fet |
| 11/27/1990 | US4973938 Signal level adjuster |
| 11/22/1990 | EP0398039A2 An attenuator circuit |
| 11/01/1990 | WO1990013173A1 High-frequency amplifier of a radio transmitter |
| 10/31/1990 | EP0220403B1 Series network arrangement adjustable in stages |
| 10/16/1990 | US4964108 Volume control for sound reproducing apparatus |
| 10/16/1990 | US4963836 Wide range high stability variable gain amplifier |
| 10/10/1990 | EP0391786A1 Amplification circuit with linear gain control |
| 10/03/1990 | EP0390360A2 A method for changing the operating class of a transmitter |
| 08/28/1990 | US4952886 Controllable gain amplifying circuit |
| 08/16/1990 | EP0382069A2 Method and circuit arrangement for adjusting the volume in a mobile telephone |
| 08/07/1990 | US4947136 Variable gain distributed amplifier |
| 07/24/1990 | US4943785 Controllable AC voltage amplifier |
| 07/03/1990 | US4939475 Circuit arrangement comprising an amplifier connected to an opto-electrical transducer |
| 06/28/1990 | WO1990007231A1 Improved variolosser |
| 06/12/1990 | US4933647 AGC circuit |
| 06/12/1990 | US4933631 Digital AC meter |
| 06/05/1990 | US4931746 Controllable broadband amplifier and mixer which includes the amplifier |
| 05/29/1990 | US4929908 Gain controllable amplifier circuit |
| 05/23/1990 | EP0369469A2 Variable gain amplifier |
| 05/22/1990 | US4928074 Automatic gain control circuit |
| 05/15/1990 | US4926485 Output level control apparatus |
| 05/09/1990 | EP0367330A1 Linear-gain amplifier arrangement |
| 05/01/1990 | US4922535 Transient control aspects of circuit arrangements for altering the dynamic range of audio signals |
| 04/25/1990 | EP0365085A2 Signal amplitude controlling circuit |
| 04/25/1990 | EP0364711A1 Signal level adjustment circuit arrangement |
| 04/17/1990 | US4918401 Step adjustable distributed amplifier network structure |
| 03/28/1990 | EP0359836A1 Circuitry with an amplifier connected to an optoelectric transducer |
| 03/27/1990 | US4912431 Control amplifier |
| 03/22/1990 | DE3927873A1 Interference suppressor for neighbouring channel of FM receiver - has two detectors amplifying and demodulating IF signals arriving from wide and narrow band filters respectively |
| 03/20/1990 | US4910478 Amplifier circuit and method of controlling output power thereof |
| 03/14/1990 | EP0358244A1 Method of controlling a tape deck display |
| 03/14/1990 | CN1007197B Automatic linear compression circuit |
| 03/13/1990 | CA1266707A1 Method of calibrating and equalizing a multi-channel automatic gain control amplifier |
| 03/06/1990 | US4907293 Adjacent channel interference suppressing system for FM receiver |
| 02/27/1990 | US4905291 Cyberoptic audio level control system |
| 02/27/1990 | US4905255 Decision directed gain control |
| 02/20/1990 | US4903307 Audio apparatus having electronic graphic equalizer |
| 02/14/1990 | EP0354513A2 Gain controlled amplifier circuit |
| 01/31/1990 | EP0353164A2 Volume control for sound reproducing apparatus |
| 01/10/1990 | EP0350155A2 Gain cell with digital control |
| 12/27/1989 | EP0347719A2 Audio apparatus having electronic graphic equalizer |
| 12/26/1989 | US4890070 Device to control the output power of a class C amplifier |
| 12/20/1989 | EP0347141A2 Improved RF power-control circuit |
| 12/05/1989 | US4885547 Gain cell with digital control |
| 11/23/1989 | EP0342671A2 AGC delay on an integrated circuit |
| 11/16/1989 | DE3915418A1 Mixer arrangements |
| 11/15/1989 | EP0341531A2 Controllable wide band amplifier |
| 11/14/1989 | US4881043 Variable gain transconductance amplifier and variable bandwidth filter |
| 11/08/1989 | EP0340719A2 Amplifier circuit |
| 11/02/1989 | EP0339529A2 Controllable ac-amplifier |
| 10/18/1989 | EP0337561A1 Control amplifier |
| 10/18/1989 | EP0337222A2 Controllable amplifier circuit |
| 10/12/1989 | DE3742796A1 Amplifier with a transistor stage with current feedback |
| 09/26/1989 | US4870373 Constant phase gain control circuit |
| 09/26/1989 | US4870372 AGC delay on an integrated circuit |
| 09/26/1989 | US4870369 Circuit arrangement having a pre-amplifier connected to an opto-electric transducer |
| 09/26/1989 | CA1260081A1 High frequency amplifier circuit |
| 09/26/1989 | CA1260076A1 Wide range linear controller using junction field effect transistors |
| 09/19/1989 | US4868517 Variolosser |
| 09/13/1989 | EP0332367A2 Wide range linear automatic gain control amplifier |
| 09/05/1989 | US4864550 Remote control equipment for use with an audio system |
| 09/05/1989 | US4864248 Amplifier arrangement with controllable gain |
| 09/05/1989 | US4864155 Circuitry for suppressing audible noise |
| 08/22/1989 | US4859936 Method of and apparatus for determining AC calibration errors and apparatus using device with AC calibration errors |
| 08/16/1989 | EP0328180A1 Amplifier arrangement with output-swing limitation |
| 08/15/1989 | US4857825 Voltage controlled resistor |
| 08/08/1989 | US4855965 Time ramped gain for borehole televiewer |
| 08/08/1989 | US4855685 Precision switchable gain circuit |
| 07/18/1989 | US4849712 Amplifier gain control circuit arrangements |