| 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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| 05/16/1989 | US4831424 Insulated gate semiconductor device with back-to-back diodes |
| 05/16/1989 | US4831337 Wideband amplifier |
| 05/16/1989 | US4831334 Envelope amplifier |
| 05/10/1989 | EP0315259A1 Electronic correction of photodiode radiant sensitivity |
| 05/09/1989 | US4829270 Compansion system |
| 05/09/1989 | US4829267 Automatic DC restorer stage for servo data amplifier |
| 05/09/1989 | US4829266 CMOS power operational amplifier |
| 05/09/1989 | US4829265 Operational amplifier |
| 05/09/1989 | US4829263 High speed instrumentation amplifier with minimized offset voltage and drift |
| 05/03/1989 | EP0314227A2 Wideband single-ended voltage-to current converter and gain-control circuit |
| 05/03/1989 | EP0314218A1 Amplifier arrangement and integrated amplifier circuit suitable for the amplifier arrangement, and display device including said amplifier arrangement |
| 05/03/1989 | EP0313741A1 Apparatus for the reproduction of data |
| 05/02/1989 | US4827161 Comparator having an offset voltage cancellation circuit |
| 04/26/1989 | EP0313189A2 Quadcomp amplifier |
| 04/25/1989 | US4825174 Symmetric integrated amplifier with controlled DC offset voltage |
| 04/20/1989 | WO1989003612A1 Linearity differential amplifier |
| 04/19/1989 | EP0312445A1 High-frequency amplifier with an automatic neutralizing circuit |
| 04/19/1989 | EP0312017A2 Differential amplifier |
| 04/19/1989 | EP0312016A2 Linear differential amplifier |
| 04/13/1989 | DE3732915A1 Circuit arrangement for automatically setting the quiescent current in a push-pull output stage |
| 04/11/1989 | US4821136 Power transistor with self-protection against direct secondary breakdown |
| 04/11/1989 | US4821000 Audio output amplifier |
| 04/11/1989 | US4820999 Method and apparatus for amplifying signals |
| 04/11/1989 | US4820998 Operational amplifier |
| 04/11/1989 | US4820997 Differential amplifier circuit |
| 04/11/1989 | US4820967 BiCMOS voltage reference generator |
| 04/11/1989 | CA1252527A1 Comparator chatter eliminator and switching speed enhancer |
| 04/11/1989 | CA1252526A1 Wideband amplifier with active high-frequency compensation |
| 04/05/1989 | EP0310135A2 Operational amplifier circuit |
| 04/05/1989 | EP0309835A2 Motional load driver |
| 04/05/1989 | EP0309719A1 Apparatus for the reproduction of data |
| 04/05/1989 | EP0309693A2 Circuit arrangement for the automatic adjustment of the steady current in a push-pull end stage |
| 04/04/1989 | US4819046 Integrated circuit with improved protective device |
| 04/04/1989 | US4817448 Auto zero circuit for flow meter |
| 03/29/1989 | EP0309366A1 Current differentual amplifier with a sequential working anode |
| 03/29/1989 | EP0309063A1 Amplifier arrangement |
| 03/28/1989 | US4816752 Method and apparatus for low power offset correction of amplified sensor signals |
| 03/23/1989 | DE3730501A1 Audio-frequency amplifier |
| 03/22/1989 | EP0308293A1 Controlled output power device for a class-C amplifier |
| 03/22/1989 | EP0308247A2 Solid-state high power amplifier arrangement |
| 03/22/1989 | EP0308079A2 Operational amplifier stages |
| 03/22/1989 | EP0307641A1 Noise reduction circuitry |
| 03/22/1989 | EP0307465A1 Semiconductor emulation of tube amplifiers. |
| 03/21/1989 | CA1251525A1 Operating point-stabilized linearized traveling wave tube amplifier |
| 03/16/1989 | DE3725767A1 Switching power end stage mains adaptor - has two series FET(s), with resistor in source electrode line of at least one FET |
| 03/15/1989 | EP0307237A2 Signal amplifier |
| 03/15/1989 | EP0306798A2 Low noise, high speed current or voltage amplifier |
| 03/14/1989 | US4812779 Low-power feedforward amplifier |
| 03/09/1989 | WO1989002189A1 Temperature compensated logarithmic amplifier |
| 03/07/1989 | US4811422 Reduction of undesired harmonic components |
| 03/07/1989 | US4810973 Method of compensating the offset voltage in a variable gain amplifier and circuitry for carrying out the method |
| 03/07/1989 | US4810909 Amplifier circuit having high-speed raising time |
| 02/28/1989 | US4809336 Distortion synthesizer |
| 02/28/1989 | US4808946 Lightweight, high power audio amplifier and power supply |
| 02/28/1989 | US4808942 Continuous mode auto-zero offset amplifier or integrator |
| 02/23/1989 | WO1989001262A3 High-speed electronic circuit having a cascode configuration |
| 02/23/1989 | DE3742270C1 Control stage for a radio-frequency power amplifier |
| 02/21/1989 | US4806877 Amplifier having a cascade circuit |
| 02/21/1989 | US4806875 Precision operational amplifier |
| 02/15/1989 | EP0303241A2 Track-and-hold amplifier |
| 02/14/1989 | US4805236 Method and arrangement for increasing the dynamic range at an input stage of an optical receiver |
| 02/14/1989 | US4804926 FT quadrupler amplifier with linearity correction |
| 02/14/1989 | US4804904 Voltage to current converters for use in an active filter and with a moise reduction circuit |
| 02/09/1989 | WO1989001262A2 High-speed electronic circuit having a cascode configuration |
| 02/08/1989 | EP0302605A1 Cascode amplifier with non-linearity correction and improve transient response |
| 02/08/1989 | EP0302434A1 System for compensating for offset voltages in comparators |
| 02/08/1989 | EP0302290A2 Automatic frequency control system |
| 02/07/1989 | US4803442 Low power buffer amplifier |
| 02/07/1989 | US4803441 Amplifying circuit |
| 02/07/1989 | US4803423 Input circuit for a probe of a logic analyser and probe and logic analyser provided with such a circuit |
| 01/31/1989 | US4802237 Solid state transmitter protector |
| 01/31/1989 | US4801889 Amplifier for amplifying input signal voltage and supplying the same |
| 01/25/1989 | EP0300494A2 Wideband amplifier |
| 01/24/1989 | US4800339 Amplifier circuit |
| 01/24/1989 | CA1249346A1 Power amplifier with modified dynamic response |
| 01/18/1989 | EP0299665A2 Power amplifier circuit with a stand-by state |
| 01/17/1989 | US4799027 Low-frequency amplifier |
| 01/10/1989 | US4797933 Bass amplifier with high frequency response |
| 01/10/1989 | US4797633 Audio amplifier |
| 01/10/1989 | US4797631 Folded cascode amplifier with rail-to-rail common-mode range |
| 01/04/1989 | EP0297639A2 Correction arrangement for an amplifier |
| 12/28/1988 | EP0296967A2 Amplifier for voltage or current to frequency converter |
| 12/28/1988 | CA1247708A Amplifier with double rail output |
| 12/27/1988 | US4794458 Modulation device |
| 12/27/1988 | US4794349 Fully differential, CMOS operational power amplifier |
| 12/27/1988 | US4794348 Linear wideband differential amplifier and method for linearizing the same |
| 12/27/1988 | US4794343 Method and apparatus for calibrating and equalizing a multi-channel automatic gain control amplifier |
| 12/21/1988 | EP0295973A1 Noise reduction arrangement for ultra-high frequency amplifier and amplifier-antenna connection including such an arrangement |
| 12/21/1988 | EP0295497A2 High-dynamics amplifier stage with distortion detection |
| 12/20/1988 | US4792977 Hearing aid circuit |
| 12/20/1988 | US4792886 Device comprising an electronic circuit for processing an analog signal |
| 12/20/1988 | US4792766 Method of controlling temperature in push-pull audio output circuits and temperature control circuit |
| 12/20/1988 | US4792748 Two-terminal temperature-compensated current source circuit |
| 12/20/1988 | US4792704 Scaled voltage level translator circuit |
| 12/15/1988 | WO1988010025A1 Envelope amplifier |
| 12/14/1988 | EP0295221A2 CMOS power operational amplifier |
| 12/13/1988 | US4791385 Voltage controlled amplifier for symmetrical electrical signals |
| 12/13/1988 | US4791314 Oscillation-free, short-circuit protection circuit |
| 12/13/1988 | CA1246678A1 Optical heterodyne receiver |
| 12/07/1988 | EP0293486A1 Amplifier having a constant-current bias circuit |