| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 07/28/1987 | CA1224894A1 Subscriber line interface circuit having an impedance synthesizer |
| 07/21/1987 | US4682120 Short circuit protection device for an integrated circuit and a load connected thereto |
| 07/21/1987 | US4682119 Class AB amplifier and a distortion corrector therefor |
| 07/21/1987 | US4682098 Voltage-current converter |
| 07/21/1987 | US4682022 Detector preamplifier for use with a MCT detector |
| 07/21/1987 | CA1224545A1 Integrated circuits |
| 07/21/1987 | CA1224543A1 Constant-current source circuit and differential amplifier using the same |
| 07/15/1987 | EP0228875A1 Amplifier circuit having short rise-time |
| 07/14/1987 | US4680585 Pulse-excited, auto-zeroing multiple channel data transmission system |
| 07/08/1987 | EP0228215A2 Field-effect transistor amplifier circuits |
| 07/07/1987 | US4678950 Output circuit having an improved protecting circuit |
| 07/02/1987 | WO1987004026A1 Gate modulated transimpedance amplifier with buffering for focal plane array |
| 07/01/1987 | EP0227323A2 Wideband feedback amplifier |
| 06/30/1987 | US4677692 Frequency conversion apparatus |
| 06/30/1987 | US4677392 Cascaded internal impedance dependent amplifier with accurate variable gain control |
| 06/30/1987 | US4677390 Low-power feedforward amplifier |
| 06/24/1987 | EP0226255A2 Modulator |
| 06/23/1987 | US4675592 Voltage output circuit |
| 06/18/1987 | WO1987003755A1 Cascaded internal impedance dependent amplifier with accurate variable gain control |
| 06/18/1987 | WO1987003754A1 A method of calibrating and equalizing a multi-chanel automatic gain control amplifier |
| 06/16/1987 | US4673889 Apparatus and method for muting an output signal in a switching amplifier |
| 06/16/1987 | US4673888 For an audio amplifier |
| 06/16/1987 | US4673886 Adaptively stabilized RF amplifier |
| 06/16/1987 | US4673830 Biasing network for multifunction bipolar integrated system |
| 06/16/1987 | EP0225586A1 An overvoltage protection circuit for an integrated MOS device |
| 06/16/1987 | CA1223048A1 Broadband control amplifier |
| 06/16/1987 | CA1223047A1 Amplifier arrangement comprising a protection circuit |
| 06/10/1987 | CN86107133A Multi-level power amplifying circuitry for portable radio transceivers |
| 06/09/1987 | US4672452 Device for the automatic precorrection of non-linearities in a power amplification chain for a television transmitter |
| 06/09/1987 | US4672304 In MOS technology |
| 06/04/1987 | WO1987003378A1 Adaptive impedance mismatch detector system |
| 06/04/1987 | DE3541948A1 Operational amplifier with offset voltage equalization |
| 06/02/1987 | US4670720 Switching device for suppressing a signal |
| 05/27/1987 | EP0222927A1 High-frequency amplifier |
| 05/26/1987 | US4668921 Power supply circuit |
| 05/26/1987 | US4668918 Low order charge-pump filter |
| 05/19/1987 | US4667165 High-speed full differential amplifier with common mode rejection |
| 05/19/1987 | US4667164 Frequency response amplifier |
| 05/19/1987 | US4667144 High frequency, high voltage MOSFET isolation amplifier |
| 05/13/1987 | EP0221529A2 Apparatus and method for smoothing an abrupt change in signal level |
| 05/12/1987 | CA1221747A1 Multi-stage amplifier with frequency compensation |
| 05/07/1987 | WO1987002843A1 Multi-level power amplifying circuitry for portable radio transceivers |
| 05/07/1987 | DE3537109A1 Transistor amplifier for a video output stage |
| 05/05/1987 | US4663599 Integrated circuit amplifier module |
| 04/28/1987 | US4661978 Subscriber line interface circuit having an impedence synthesizer |
| 04/28/1987 | US4661779 Operational amplifier |
| 04/28/1987 | CA1221143A1 Feed forward circuit and a method for aligning and balancing the same |
| 04/22/1987 | EP0219183A2 Class B amplifier |
| 04/21/1987 | US4660003 Device for limiting the power transmission of radiowave transmitters |
| 04/21/1987 | US4659998 Voltage follower |
| 04/21/1987 | US4659981 Input transformer circuit |
| 04/21/1987 | CA1220829A1 Ambient light ad electromagnetic noise reduction circuit |
| 04/16/1987 | DE3536447A1 Transistor output stage which is resistant to short circuits and overload |
| 04/15/1987 | EP0218333A1 Bias circuit for fet |
| 04/15/1987 | EP0218179A1 Signal-amplifying circuit arrangement |
| 04/15/1987 | EP0218152A1 Switching amplifier |
| 04/14/1987 | US4658220 Dual-gate, field-effect transistor low noise amplifier |
| 04/14/1987 | US4658219 Folded cascode field-effect transistor amplifier with increased gain |
| 04/14/1987 | US4657658 Semiconductor devices |
| 04/14/1987 | US4656871 Capacitor sensor and method |
| 04/08/1987 | EP0217431A1 Amplifier arrangement |
| 04/08/1987 | EP0217200A1 Switching amplifier |
| 04/07/1987 | US4656435 Constant biasing circuit and operational amplifier using said circuit |
| 04/01/1987 | EP0216697A1 Control device for an output circuit of an integrated circuit |
| 03/31/1987 | US4654603 Low input-capacitance amplifier for driving guard shield conductors |
| 03/25/1987 | EP0215493A1 Protected MOS transistor circuit |
| 03/25/1987 | EP0215197A1 Video power amplifier and its supply |
| 03/24/1987 | CA1219646A1 Push-pull amplifier |
| 03/18/1987 | EP0214376A2 Circuit arrangement for a low-noise audio-frequency signal source |
| 03/17/1987 | US4651113 Amplitude stabilized crystal oscillator |
| 03/17/1987 | US4651112 Audio amplifier system |
| 03/17/1987 | US4651110 Circuit arrangement for zero point balancing of an integrated operational amplifier |
| 03/17/1987 | CA1219349A1 Non-saturating video output amplifier |
| 03/12/1987 | WO1987001533A1 Circuit for protecting against interference voltages occurring on signalling lines |
| 03/11/1987 | EP0213354A1 Spark-over protection device in a transmitter circuit |
| 03/10/1987 | US4649565 Electro-acoustic converter with compensated frequency response characteristic |
| 03/10/1987 | CA1219044A1 Method of and apparatus for low noise current amplification |
| 03/05/1987 | DE3531645A1 Schaltungsanordnung zum schutz gegen auf signalleitungen auftretenden stoerspannungen Circuitry for protection against interference voltages occurring on signal lines |
| 03/04/1987 | EP0212760A2 Circuit arrangement with a load coupled to the output of an amplifier |
| 03/03/1987 | US4647872 Cascode amplifier |
| 03/03/1987 | US4647871 Adaptive impedance mismatch detector system |
| 02/25/1987 | EP0211714A1 Device for increasing the dynamic range of an amplifying circuit, in particular of an MLS board receiver |
| 02/24/1987 | CA1218426A1 D.c. biassing of mesfets operated at high frequencies |
| 02/19/1987 | DE3529078A1 Transmitter amplifier with selective noise feedback |
| 02/17/1987 | US4644301 Redundancy system and switching network |
| 02/17/1987 | US4644294 Device for protecting a push-pull output stage against a short-circuit between the output terminal and the positive pole of the supply |
| 02/17/1987 | US4644288 Method of fault sensing for power amplifiers having coupled power stages with normally alternate current flow |
| 02/11/1987 | CN86101843A Even q resonant amplifier |
| 02/10/1987 | US4642453 Apparatus for increasing the dynamic range in an integrating optoelectric receiver |
| 02/04/1987 | EP0210376A1 Low Voltage clamp |
| 02/03/1987 | US4641378 Fiber optic communication module |
| 01/31/1987 | CN85102113A Audio frequency transmission circuit formed by line-voltage stabilizer type transmitting amplifier |
| 01/29/1987 | WO1987000709A1 Composite audio amplifier |
| 01/29/1987 | WO1987000708A1 Amplifier circuit with two in-series connected sections |
| 01/29/1987 | DE3526748A1 Verstaerkerschaltungen mit zwei in kette geschalteten abschnitten Verstaerkerschaltungen with two sections connected in chain |
| 01/28/1987 | EP0210155A2 Cascode amplifier |
| 01/27/1987 | US4639785 Non-saturating video output amplifier |
| 01/27/1987 | US4639686 High frequency amplifier circuit |
| 01/27/1987 | US4639134 Process and circuit arrangement for amplifying an input current |
| 01/21/1987 | EP0209334A1 Current mirror circuit |