| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/05/1990 | EP0400650A2 Linearized differential amplifier |
| 12/05/1990 | EP0400643A2 Amplifying apparatus with a differential amplifier stage |
| 12/04/1990 | US4975963 Muting circuit |
| 12/04/1990 | US4975658 High frequency amplifier circuit with noise figure improvement |
| 12/04/1990 | US4975631 Constant current source circuit |
| 11/29/1990 | WO1990014712A1 Low current switched capacitor circuit |
| 11/28/1990 | EP0399276A2 Circuit for limiting temperature without distortion in audio power amplifiers |
| 11/28/1990 | CN1047426A Amplifier arrangement |
| 11/27/1990 | US4973919 Amplifying with directly coupled, cascaded amplifiers |
| 11/27/1990 | US4973916 Operational amplifier driven power amplifier |
| 11/22/1990 | EP0398712A2 An amplification circuit |
| 11/20/1990 | US4972440 Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals |
| 11/20/1990 | US4972159 Amplifier circuit more immune to fluctuation of reference voltage |
| 11/20/1990 | US4972158 Transistor amplifier with variable bias circuits |
| 11/20/1990 | US4972157 Operational amplifier having selectable inputs |
| 11/20/1990 | CA1276694C Operational amplifier |
| 11/14/1990 | EP0397335A2 Complementary metal-oxide semiconductor translator |
| 11/14/1990 | EP0397265A1 Bipolar transistor arrangement with distortion compensation |
| 11/14/1990 | EP0397240A1 Amplifier arrangement |
| 11/14/1990 | EP0397015A2 Instantaneous power limiting circuit |
| 11/13/1990 | US4970470 DC-coupled transimpedance amplifier |
| 11/01/1990 | WO1990013175A1 Tunable resonance amplifier |
| 10/31/1990 | EP0394807A2 Voltage buffer stage with temperature-independent output |
| 10/31/1990 | EP0394702A2 A circuit arrangement for increasing the band-gain product of a cmos amplifier |
| 10/31/1990 | EP0394507A1 High speed sample and hold circuit arrangement |
| 10/31/1990 | EP0394506A1 High speed sample and hold circuit arrangement |
| 10/30/1990 | US4967169 FET monolithic microwave integrated circuit variable slope gain-equalizer |
| 10/30/1990 | US4967164 Adaptive predistortion circuit |
| 10/24/1990 | EP0393404A2 Stabilization and calibration of precision electronic circuit component |
| 10/24/1990 | CA2015006A1 Fast sample and hold circuit configuration |
| 10/23/1990 | US4965530 Parallelled amplifier with switched isolation resistors |
| 10/23/1990 | US4965528 Cross-coupled differential amplifier |
| 10/23/1990 | US4965526 Hybrid amplifier |
| 10/23/1990 | CA1275458C Amplifier circuit having high-speed raising time |
| 10/17/1990 | EP0392312A1 Amplifier for hearing aid |
| 10/17/1990 | EP0392062A1 Integrable amplifier circuit |
| 10/16/1990 | US4963837 Amplifiers |
| 10/16/1990 | US4963835 Differential amplifier with an improved gain characteristic in a high frequency region |
| 10/16/1990 | US4963764 Low noise current mirror active load circuit |
| 10/10/1990 | EP0391235A1 Analog predistortion circuit |
| 10/10/1990 | EP0391055A2 Output stage for an operational amplifier |
| 10/09/1990 | US4962328 Charge amplifier circuit with drift compensation |
| 10/09/1990 | US4962325 Sample-hold amplifier circuit |
| 10/04/1990 | WO1990011644A1 Differential amplifier with gain compensation |
| 10/03/1990 | EP0390554A1 Magnetic reproducing head amplifier |
| 10/03/1990 | EP0390494A2 Wideband amplifier using fet |
| 10/03/1990 | EP0390360A2 A method for changing the operating class of a transmitter |
| 10/03/1990 | EP0389654A1 Integrated circuit amplifier |
| 10/02/1990 | US4961032 Dual power source output amplifier |
| 09/26/1990 | EP0388802A2 Error amplifier for use with parallel operated autonomous current or voltage regulators using transconductance type power amplifiers |
| 09/25/1990 | US4959621 Differential amplifier having externally controllable power consumption |
| 09/19/1990 | EP0387948A1 Adaptive predistortion circuit with memory |
| 09/19/1990 | EP0387837A2 Externally discernible power supply abnormality detection system |
| 09/19/1990 | EP0387463A1 Improvements to complementary emitter follower drivers |
| 09/19/1990 | EP0208765B1 Automatic reduction of intermodulation products in high power linear amplifiers |
| 09/18/1990 | US4958132 Complementary metal-oxide-semiconductor translator |
| 09/14/1990 | CA2011837A1 Adaptive predistortion circuit with a memory |
| 09/13/1990 | DE3907139A1 Circuit arrangement for controlling a DC motor |
| 09/11/1990 | USRE33333 Digital audio amplifier having a high power output level and low distortion |
| 09/11/1990 | US4956729 Video signal preamplifier circuit |
| 09/11/1990 | US4956616 Muting circuit for audio amplifiers |
| 09/11/1990 | US4956615 Input circuit for high-frequency amplifiers |
| 09/11/1990 | US4956613 Differential amplifier having externally controllable power consumption |
| 09/11/1990 | US4956565 Transistor arrangement |
| 09/05/1990 | EP0385641A2 A high efficiency UHF linear power amplifier |
| 09/05/1990 | EP0385547A1 Amplifier arrangement with saturation detection |
| 09/04/1990 | US4954787 Audio signal transmission system with noise suppression network |
| 09/04/1990 | US4954771 Stimulus generator |
| 09/04/1990 | US4954769 CMOS voltage reference and buffer circuit |
| 09/01/1990 | CA2011193A1 Broadband nonlinear drive control network for linear amplifiers arranged in several amplifier channels |
| 08/28/1990 | US4952886 Controllable gain amplifying circuit |
| 08/28/1990 | US4952885 MOS stage with high output resistance particularly for integrated circuits |
| 08/28/1990 | US4952867 Base bias current compensator |
| 08/23/1990 | WO1990009703A1 Amplifier arrangement and communication line circuit using same |
| 08/23/1990 | WO1990009702A1 Ultrahigh frequency amplifier circuit with reduced distortion |
| 08/22/1990 | EP0383397A2 Current conveyor circuit |
| 08/22/1990 | EP0383293A2 Amplifying circuit |
| 08/22/1990 | EP0382906A2 Protected darlington transistor arrangement |
| 08/21/1990 | US4951003 Differential transconductance circuit |
| 08/16/1990 | EP0382697A2 Control voltage generator in a transmitter arrangement for digitally modulated signals |
| 08/16/1990 | EP0382695A2 Transmitter arrangement for digitally modulated signals |
| 08/16/1990 | EP0382373A2 Nonlinear noninverting transimpedance amplifier |
| 08/14/1990 | US4949050 RF power amplifier system having amplifier protection |
| 08/14/1990 | US4949048 Pulse width modulation amplifier circuit |
| 08/09/1990 | DE3903497A1 Low-noise amplifier circuit |
| 08/08/1990 | EP0380703A1 Wide-band amplifier |
| 08/08/1990 | CN1044554A 晶体管电路 Transistor circuit |
| 08/07/1990 | US4947135 Single-ended chopper stabilized operational amplifier |
| 08/07/1990 | US4947056 MOSFET for producing a constant voltage |
| 08/02/1990 | DE3902871A1 Automatic control of the operating point of radio-frequency field-effect transistors in keyed pulse mode |
| 08/01/1990 | EP0380361A2 Transmitter circuit with gallium arsenide field effect transistor |
| 08/01/1990 | EP0380167A1 Adaptive predistortion circuit |
| 08/01/1990 | EP0380152A1 Transistor circuit |
| 08/01/1990 | EP0379817A1 Integrated circuit with offset correction, and process for using same |
| 08/01/1990 | CN1009044B High-efficiency class-a audio power amplifier |
| 07/31/1990 | US4945314 Amplifier arrangement with saturation detection |
| 07/31/1990 | US4945259 Bias voltage generator and method |
| 07/31/1990 | US4945229 Fiber optic receiver and transceiver |
| 07/31/1990 | CA1272253A1 Temperature regulated feedforward amplifier |
| 07/25/1990 | EP0379240A1 Clocked comparator with offset reduction |