| 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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| 10/03/1989 | US4872209 Integratable amplifier circuit having frequency responsive negative feedback |
| 10/03/1989 | US4871980 High efficiency power amplifier comprising multilevel power supply |
| 10/03/1989 | US4871977 Monolithic integrated wideband power amplifier |
| 10/03/1989 | US4871976 Amplifier circuit including single capacitor for DC differential-input balance |
| 09/27/1989 | EP0334660A2 R.F. preamplifier |
| 09/27/1989 | EP0334220A2 Operational amplifier |
| 09/26/1989 | US4870533 Transistor protection circuit |
| 09/26/1989 | US4870371 Network for cascade compensation of the non-linearity of an amplifier |
| 09/26/1989 | CA1261002A1 Impedance mismatch detector |
| 09/21/1989 | WO1989008970A1 Induction loop driving amplifiers |
| 09/20/1989 | EP0333563A1 Electric power supply control unit for a charge in an intellegent integrated power circuit |
| 09/20/1989 | EP0332714A1 Temperature compensated current source |
| 09/20/1989 | EP0332636A1 A signal-shaping network |
| 09/19/1989 | US4868516 Alternating current amplifier with digitally controlled frequency response |
| 09/19/1989 | EP0327577A4 High voltage amplifier. |
| 09/13/1989 | EP0331778A1 Output amplifier |
| 09/12/1989 | US4866399 Noise immune current mirror |
| 09/12/1989 | US4866297 Processing circuit for use with DC-voltage-output type sensors |
| 09/12/1989 | CA1259400A1 Modulation device |
| 09/08/1989 | WO1989008350A1 Transimpedance amplifier with noise reduction and bandwith compensation |
| 09/07/1989 | DE3905459A1 Single-ended push=pull power amplifier - has two separate current sources, one for driver circuit and one for push=pull circuit with single cycle output |
| 09/07/1989 | DE3805686A1 Amplifier circuit, particularly for sensors |
| 09/06/1989 | EP0330774A1 Reduction of undesired harmonic components |
| 09/05/1989 | US4864454 Means for reducing damage to JFETs from electrostatic discharge events |
| 09/05/1989 | US4864155 Circuitry for suppressing audible noise |
| 09/05/1989 | US4864120 Electronic correction of photodiode radiant sensitivity |
| 08/30/1989 | EP0329793A1 High-speed electronic circuit having a cascode configuration |
| 08/30/1989 | CN1035214A Technique of low distorsion amplification |
| 08/29/1989 | US4862102 Method and apparatus for minimizing the self heating distortion of a compensated differential transconductance amplifier |
| 08/29/1989 | CA1258889A1 Apparatus for smoothing an abrupt change in signal level |
| 08/22/1989 | US4860361 Acoustic-device cooling unit |
| 08/22/1989 | US4860107 Video display driver apparatus |
| 08/22/1989 | US4859967 RF power amplifier protection |
| 08/22/1989 | US4859961 Wide bandwidth push-pull parallel amplifier |
| 08/22/1989 | US4859955 Apparatus for smoothing an abrupt change in signal level |
| 08/16/1989 | EP0328180A1 Amplifier arrangement with output-swing limitation |
| 08/16/1989 | EP0327577A1 High voltage amplifier |
| 08/15/1989 | US4857865 Self equalizing multi-stage radio frequency power amplifier |
| 08/15/1989 | US4857862 High-gain IC amplifier |
| 08/15/1989 | US4857861 Amplifier arrangement with improved quiescent current control |
| 08/15/1989 | US4857725 Differential offset corrected current mirror |
| 08/09/1989 | EP0326955A1 Bicmos voltage reference generator |
| 08/09/1989 | EP0321455A4 Emulated guitar loudspeaker. |
| 08/09/1989 | CN1034646A Charge amplifier circuit |
| 08/08/1989 | US4855687 Transimpedance amplifier with noise reduction and bandwidth compensation |
| 08/08/1989 | US4855684 Bias current compensation for bipolar input stages |
| 08/08/1989 | US4855625 Operational amplifier having low DC current input circuit |
| 08/02/1989 | EP0326296A2 High-speed data latch with zero data hold time |
| 08/02/1989 | EP0325903A2 Charge amplifier circuit |
| 08/01/1989 | US4853652 Wide band and low noise amplifier for metric waves |
| 08/01/1989 | US4853649 Distributed fet amplifier and bias voltage supply circuit therefor |
| 08/01/1989 | US4853648 Power amplifier circuit with a stand-by state |
| 08/01/1989 | US4853645 Amplifier arrangement with quiescent current control |
| 08/01/1989 | US4853639 Non-contacting voltage metering apparatus |
| 08/01/1989 | US4853609 Distortion-free, opposite-phase current source |
| 08/01/1989 | US4853559 High voltage and power BiCMOS driving circuit |
| 07/19/1989 | EP0324525A2 Amplifier circuit |
| 07/19/1989 | EP0324273A2 Wideband linearized emitter feedback amplifier |
| 07/19/1989 | EP0324205A2 Amplifier circuit arrangement |
| 07/19/1989 | CN2041465U Duplex feed back amplifying module |
| 07/18/1989 | US4849713 High-dynamics amplifier stage with distortion detection |
| 07/18/1989 | US4849710 Temperature compensated high gain FET amplifier |
| 07/11/1989 | US4847523 Lock-in test amplifier |
| 07/11/1989 | US4847518 CMOS voltage divider circuits |
| 07/11/1989 | CA1257328A1 Current source with adjustable temperature coefficient |
| 07/06/1989 | DE3833654A1 Circuit arrangement for the protection of transistors |
| 07/05/1989 | EP0323059A2 Amplifier circuit |
| 07/04/1989 | US4845675 High-speed data latch with zero data hold time |
| 07/04/1989 | US4845584 Transistor protective circuit |
| 07/04/1989 | US4845441 Amplifier circuit with bipolar transistors |
| 06/28/1989 | EP0321701A2 An audio amplifier having a low-noise input stage |
| 06/28/1989 | EP0321455A1 Emulated guitar loudspeaker. |
| 06/27/1989 | US4843344 High voltage amplifier |
| 06/27/1989 | US4843342 Differential amplifier with input bias current cancellation |
| 06/27/1989 | US4843341 Differential amplifier having controllable power consumption |
| 06/27/1989 | US4843303 Voltage regulator circuit |
| 06/27/1989 | US4843257 Regulated power supply for MOS Transistors with short channel length |
| 06/20/1989 | US4841252 System for compensating for offset voltages in comparators |
| 06/15/1989 | DE3744112A1 Amplifier arrangement |
| 06/13/1989 | US4839610 System for automatically controlling the gain-bandwidth product of operational amplifiers |
| 06/13/1989 | US4839609 Differential amplifier |
| 06/13/1989 | US4839608 Circuit layout to eliminate alternating voltage interference signals |
| 06/07/1989 | EP0318811A2 Improved power stage with increased output dynamics |
| 06/07/1989 | CN1033322A Integrated poly-phase power meter |
| 06/06/1989 | US4837523 High slew rate linear amplifier |
| 06/06/1989 | US4837522 Noise reducer for microwave amplifier |
| 06/06/1989 | CA1255379A1 Device for increasing the dynamic range of an amplification circuit in particular of an airborne mls receiver |
| 06/01/1989 | DE3731300A1 Method for optimising the transient behaviour of a multistage amplifier with negative feedback, and a multistage amplifier with negative feedback |
| 05/31/1989 | EP0318396A2 Operational amplifier circuit having stable operating point |
| 05/31/1989 | EP0318263A2 Folded cascode amplifier with rail-to-rail common-mode range |
| 05/30/1989 | US4835493 Very wide bandwidth linear amplitude modulation of RF signal by vector summation |
| 05/30/1989 | US4835490 Circuit for automatically controlling the gain-bandwidth product of operational amplifiers |
| 05/30/1989 | US4835489 Single-ended, feed-forward gain stage |
| 05/30/1989 | US4835488 Wideband linearized emitter feedback amplifier |
| 05/30/1989 | US4835485 Unconditionally-stable ultra low noise R.F. preamplifier |
| 05/24/1989 | EP0317222A2 Voltage divider circuits |
| 05/24/1989 | EP0316480A1 Monolithic integrated wideband power amplifier |
| 05/23/1989 | US4833424 Linear amplifier with transient current boost |
| 05/23/1989 | US4833423 Apparatus and method for a wide-band direct-coupled transistor amplifier |
| 05/17/1989 | EP0315877A2 Amplifier |