| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 04/18/1989 | CA1252884A1 Space amplifier |
| 04/18/1989 | CA1252834A1 Multifunction floating fet circuit |
| 04/13/1989 | DE3732915A1 Circuit arrangement for automatically setting the quiescent current in a push-pull output stage |
| 04/13/1989 | DE3731948A1 Circuit arrangement for the control of current sources in integrated circuits |
| 04/11/1989 | US4821093 Dual channel high electron mobility field effect transistor |
| 04/11/1989 | US4821000 Audio output amplifier |
| 04/11/1989 | US4820998 Operational amplifier |
| 04/11/1989 | US4820997 Differential amplifier circuit |
| 04/11/1989 | US4820996 Amplifying arrangements |
| 04/11/1989 | US4820986 Inductive circuit arrangements |
| 04/11/1989 | US4820940 Control circuits operating with pulse-width modulated signals |
| 04/11/1989 | CA1252526A1 Wideband amplifier with active high-frequency compensation |
| 04/11/1989 | CA1252523A1 Level shift circuit for differential signals |
| 04/05/1989 | EP0310575A2 Integrated audio amplifier electronically commutable from a single ended or stereo configuration to a balanced or bridge configuration and viceversa |
| 04/05/1989 | EP0310307A2 Current voltage converter circuit |
| 04/05/1989 | EP0310135A2 Operational amplifier circuit |
| 04/05/1989 | EP0309835A2 Motional load driver |
| 04/05/1989 | EP0309802A2 Interface circuit for connecting test instrumentation |
| 04/05/1989 | EP0309693A2 Circuit arrangement for the automatic adjustment of the steady current in a push-pull end stage |
| 04/04/1989 | US4818929 To a second voltage input comparing a first |
| 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 | EP0309365A1 Adjustable current source and automatic calibration digital/analog converter using such a source |
| 03/29/1989 | EP0309163A2 A monolithic microwave integrated circuit |
| 03/29/1989 | EP0309063A1 Amplifier arrangement |
| 03/28/1989 | US4816782 Modulation sensitivity correction circuit for voltage-controlled oscillator |
| 03/28/1989 | US4816773 Non-inverting repeater circuit for use in semiconductor circuit interconnections |
| 03/28/1989 | US4816771 Amplifier arrangement for an adaptive reduction of an unwanted d.c. offset in an input signal and an AM receiver using same |
| 03/23/1989 | WO1989002674A1 Read-out amplifier for photovoltaic detector |
| 03/22/1989 | EP0308247A2 Solid-state high power amplifier arrangement |
| 03/22/1989 | EP0308079A2 Operational amplifier stages |
| 03/22/1989 | EP0308007A2 A circuit arrangement for storing sampled analogue electrical currents |
| 03/22/1989 | EP0308000A1 Amplifier arrangement |
| 03/22/1989 | EP0307980A2 A control circuit for a laser printer |
| 03/22/1989 | EP0307470A1 Equal power amplifier system for active phase array antenna and method of arranging same |
| 03/22/1989 | EP0307445A1 Plural level beam-forming network. |
| 03/21/1989 | US4814723 Integratable class AB output stage for low-frequency amplifiers |
| 03/21/1989 | US4814643 Comparison circuit |
| 03/21/1989 | CA1251525A1 Operating point-stabilized linearized traveling wave tube amplifier |
| 03/21/1989 | CA1251524A1 Temperature compensated sense 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 |
| 03/15/1989 | EP0306519A1 Current sensing differential amplifier. |
| 03/15/1989 | CN2034353U Multifunctional biologic amplifier interfaced with computer |
| 03/14/1989 | US4812782 Non-reactive radial line power divider/combiner with integral mode filters |
| 03/14/1989 | US4812780 Broadband differential amplifier |
| 03/14/1989 | US4812778 Isolation amplifier |
| 03/14/1989 | US4812686 Pulse amplifier |
| 03/08/1989 | EP0306396A1 Temperature threshold detection circuit |
| 03/08/1989 | EP0306395A1 Light detection circuit |
| 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 |
| 03/01/1989 | EP0305000A2 An amplifier circuit including a load circuit |
| 03/01/1989 | EP0304680A2 Integrated complementary push-pull class B output power amplifier |
| 03/01/1989 | EP0304560A2 Photodetector having cascaded photoelements |
| 02/28/1989 | US4808944 High accuracy differential output stage |
| 02/28/1989 | US4808938 Impedance-matched signal selecting and combining system |
| 02/28/1989 | US4808857 Sense amplifier circuit for switching plural inputs at low power |
| 02/28/1989 | US4808848 Comparator circuit |
| 02/28/1989 | US4808847 Temperature-compensated voltage driver circuit for a current source arrangement |
| 02/23/1989 | WO1989001262A3 High-speed electronic circuit having a cascode configuration |
| 02/21/1989 | US4806884 High frequency generator |
| 02/21/1989 | US4806877 Amplifier having a cascade circuit |
| 02/21/1989 | US4806875 Precision operational amplifier |
| 02/21/1989 | US4806874 Switched capacitor amplifier circuit |
| 02/21/1989 | US4806748 Photo-electric conversion circuit |
| 02/21/1989 | CA1250362A1 Class d hearing aid amplifier |
| 02/14/1989 | US4805236 Method and arrangement for increasing the dynamic range at an input stage of an optical receiver |
| 02/14/1989 | US4804927 Current amplifier circuit |
| 02/14/1989 | US4804904 Voltage to current converters for use in an active filter and with a moise reduction circuit |
| 02/14/1989 | US4804834 Photosensor having photosensitive part formed of purple membrane |
| 02/09/1989 | WO1989001262A2 High-speed electronic circuit having a cascode configuration |
| 02/09/1989 | DE3725603A1 Grid bias generating circuit for HF amplifier electron tube - has forward polarised, series semiconductor diodes in feed line from negative anode voltage source to tube cathodes |
| 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 | CN1030868A Electromagnetic diagnosis instrument for main and collateral channels maintaining biotic vitality |
| 02/07/1989 | US4803446 Low noise microwave amplifier |
| 02/07/1989 | US4803443 Microwave power combining FET amplifier |
| 02/07/1989 | US4803442 Low power buffer amplifier |
| 02/07/1989 | US4803441 Amplifying circuit |
| 02/07/1989 | EP0248789A4 High-fidelity audio frequency amplifier. |
| 02/02/1989 | DE3723008C1 Electronic switching device preferably operating contactlessly |
| 02/01/1989 | EP0301963A2 Amplifier device for signals of weak intensity, particularly for signals supplied by an optical plastic fibre |
| 02/01/1989 | EP0301319A1 Monolithically integrable, amplitude-controlled oscillator-differential amplifier circuit |
| 01/31/1989 | US4801893 Forward transimpedance amplifier |
| 01/31/1989 | US4801892 Current mirror circuit |
| 01/31/1989 | US4801891 Differential amplifier utilizing MOS transistors of a single channel polarity |
| 01/31/1989 | US4801889 Amplifier for amplifying input signal voltage and supplying the same |
| 01/31/1989 | US4801838 Method and device for improving the sensitivity and the signal to noise ratio of piezo-electric transducers having a plurality of sensors combined in parallel |
| 01/31/1989 | US4801803 Detector and localizer for low energy radiation emissions |
| 01/26/1989 | WO1989000739A1 Multiphase multiplier |
| 01/26/1989 | WO1988007786A3 Equal power amplifier system for active phase array antenna and method of arranging same |
| 01/26/1989 | DE3744751A1 Output stage of an amplifier |
| 01/24/1989 | US4800339 Amplifier circuit |
| 01/18/1989 | EP0299665A2 Power amplifier circuit with a stand-by state |
| 01/18/1989 | EP0299259A2 Electronic switching device, preferably operating without contact |
| 01/18/1989 | CN2031178U Vhf. uhf all channel antenna amplifier |
| 01/17/1989 | US4799027 Low-frequency amplifier |
| 01/17/1989 | US4799026 Multifunction amplifier |