| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/12/1981 | US4267516 Common-emitter fT doubler amplifier employing a feed forward amplifier to reduce non-linearities and thermal distortion |
| 05/05/1981 | US4266254 Integrated circuit for recording and playback of such recording |
| 05/05/1981 | US4266199 Linear alternating-current amplifier |
| 05/05/1981 | US4266149 Pulse signal amplifier |
| 05/05/1981 | CA1100412A1 Amplifier and sound reproduction system |
| 04/28/1981 | US4264873 Differential amplification circuit |
| 04/28/1981 | US4264872 Differential amplifiers utilizing MIS type field effect transistors |
| 04/22/1981 | EP0027382A1 A computerised tomographic scanning apparatus including a current amplifier |
| 04/21/1981 | USRE30587 Differential amplifier circuit |
| 04/21/1981 | US4263676 RF amplifying system having image rejection |
| 04/21/1981 | US4263563 Amplifier output stage distortion reduction |
| 04/21/1981 | US4263562 High input impedance transistor amplifier |
| 04/21/1981 | US4263561 Amplifier arrangement with suppression of spurious signals |
| 04/21/1981 | US4263559 N-way series connected quadrature power divider and combiner |
| 04/14/1981 | US4262262 Electric amplifier |
| 04/14/1981 | US4262261 Amplifier circuit |
| 04/14/1981 | US4262218 Signal switch circuit for plural analog signals |
| 04/14/1981 | CA1099349A1 Transistor power amplifiers |
| 04/14/1981 | CA1099347A1 Cross-coupled charge transfer sense amlifier circuits |
| 04/14/1981 | CA1099346A1 Isolation circuit with duty cycle feedback |
| 04/14/1981 | CA1099342A1 Unbalanced dc voltage detecting circuit |
| 04/07/1981 | USRE30572 Low distortion signal amplifier arrangement |
| 04/07/1981 | US4260955 Current amplifier with regenerative latch switch |
| 04/07/1981 | US4260954 Amplifier load correction system |
| 04/02/1981 | WO1981000938A1 Cmos operational amplifier with improved frequency compensation |
| 04/02/1981 | WO1981000937A1 Cmos operational amplifier with reduced power dissipation |
| 04/02/1981 | WO1981000924A1 Current source having saturation protection |
| 04/01/1981 | EP0025970A1 Operational amplifier in IG-FET technology |
| 04/01/1981 | EP0025950A1 Amplifier device |
| 03/31/1981 | US4259643 Current gain amplifier cell |
| 03/25/1981 | EP0025680A1 Auto-zero amplifier circuit |
| 03/24/1981 | US4258332 Loudspeaker amplifier |
| 03/24/1981 | US4258331 Differential amplifier |
| 03/24/1981 | US4258330 Differential current amplifier |
| 03/24/1981 | US4258329 Noise suppression system |
| 03/24/1981 | US4258328 Feed forward microwave amplifier for communication systems |
| 03/18/1981 | EP0025234A1 Low frequency power amplifier and its use in an amplitude modulated transmitter |
| 03/18/1981 | EP0025093A2 Monolithic pacemaker utilizing I2L circuitry and amplifier |
| 03/17/1981 | US4257009 Inhibit circuit for a differential amplifier |
| 03/17/1981 | US4256980 Electronic switchover circuit |
| 03/17/1981 | CA1097797A1 Vertical deflection circuit |
| 03/13/1981 | EP0020640A4 High efficiency, light weight audio amplifier and power supply. |
| 03/10/1981 | US4255769 Low-noise preamplifier |
| 03/10/1981 | US4255724 Distortion-corrector for microwave tubes |
| 03/10/1981 | US4255715 Offset correction circuit for differential amplifiers |
| 03/10/1981 | US4255690 Cathode heating apparatus for an electronic power tube |
| 03/10/1981 | CA1097410A1 Commutating autozero amplifier |
| 03/03/1981 | US4254381 Balanced-to-single-ended signal converters |
| 03/03/1981 | US4254380 Bridge amplifier |
| 03/03/1981 | US4254379 Push-pull amplifier circuit |
| 02/24/1981 | US4253033 Wide bandwidth CMOS class A amplifier |
| 02/17/1981 | US4251803 Dynamic zero offset compensating circuit for A/D converter |
| 02/17/1981 | US4251784 Apparatus for parallel combining an odd number of semiconductor devices |
| 02/17/1981 | CA1096036A1 Dynamic transducer biasing signal amplifying circuitry |
| 02/11/1981 | EP0023506A1 Semiconductor differential amplifier having feedback bias control for stabilization |
| 02/10/1981 | US4250463 Overload protection to prevent saturation of video amplifiers |
| 02/10/1981 | US4250462 Common base connected transistor and bias network |
| 02/10/1981 | US4250461 Current mirror amplifier |
| 02/10/1981 | US4250460 Slew rate control |
| 02/10/1981 | US4250411 Dynamic resistor current leakage compensation arrangement |
| 02/04/1981 | EP0023275A1 Simplex-transmitter-receiver |
| 02/03/1981 | US4249149 Ultra high-frequency circuit with resonant cavity equipped with pairs of peripheral diodes |
| 02/03/1981 | US4249136 PWM Signal power amplifier |
| 02/03/1981 | US4249135 Amplifier with switched capacitors |
| 01/27/1981 | US4247826 Semiconductor integrated amplifier |
| 01/27/1981 | US4247825 Transistor amplifier |
| 01/27/1981 | US4247824 Linear amplifier |
| 01/27/1981 | US4247789 Electronic circuitry for multiplying/dividing analog input signals |
| 01/27/1981 | CA1094652A1 Power amplifier |
| 01/22/1981 | WO1981000179A1 Bridge amplifier |
| 01/20/1981 | US4246544 Bias circuit for a linear amplifier |
| 01/13/1981 | US4245231 Combination capacitor and transistor structure for use in monolithic circuits |
| 01/07/1981 | EP0022015A1 Amplifier arrangement and method of amplification for audio frequencies |
| 01/07/1981 | EP0021908A1 Charge transfer phase inverter and differential amplifier comprising such a device |
| 01/07/1981 | EP0021509A1 Electronic subscriber connector |
| 01/07/1981 | EP0021085A2 Monolithically integratable transistor amplifier |
| 01/07/1981 | EP0020778A1 Amplifier circuit |
| 01/07/1981 | EP0020640A1 High efficiency, light weight audio amplifier and power supply. |
| 01/06/1981 | US4243948 Substantially temperature-independent trimming of current flows |
| 01/06/1981 | US4243946 Class-B current source amplifier |
| 01/06/1981 | US4243945 Differential amplifier |
| 01/06/1981 | CA1093165A1 Fet amplifier comprising a circulator for an input signal as an isolator |
| 01/06/1981 | CA1093163A1 Amplifier |
| 12/30/1980 | US4242741 Floating shunt seismic amplifier |
| 12/30/1980 | US4242714 Current control circuit |
| 12/30/1980 | US4242644 Pulse modulator for operating a device in the avalanche mode |
| 12/30/1980 | US4242634 Electronic multiplying circuits |
| 12/30/1980 | CA1092666A1 Parallel power amplifier circuits |
| 12/23/1980 | US4241428 Line compensated seismic amplifier |
| 12/23/1980 | US4241316 Field effect transconductance amplifiers |
| 12/23/1980 | US4241315 Adjustable current source |
| 12/23/1980 | US4241314 Transistor amplifier circuits |
| 12/23/1980 | US4241313 Audio power amplifier |
| 12/23/1980 | CA1092202A1 Amplifier system with special feedback circuits |
| 12/16/1980 | US4240041 High-frequency amplifier circuit |
| 12/16/1980 | US4240040 Operational amplifier |
| 12/16/1980 | US4240039 MOS Differential amplifier |
| 12/16/1980 | US4240038 Preamplifier |
| 12/16/1980 | US4240036 Linearized three-state switching amplifier |
| 12/16/1980 | CA1091776A1 Power amplifier arrangement automatically matched to service conditions |