| 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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| 08/11/1981 | US4283641 Feedback biasing circuit arrangement for transistor amplifier |
| 08/05/1981 | EP0033198A1 Bias circuit for a field effect transistor |
| 08/04/1981 | US4282556 Input protection device for insulated gate field effect transistor |
| 07/21/1981 | US4280103 Multistage transistor amplifier |
| 07/08/1981 | EP0031677A1 Class AB push-pull FET amplifiers |
| 07/01/1981 | EP0031182A1 Amplifier arrangement with parallel-operated amplifier sections |
| 07/01/1981 | EP0031140A1 Transistor broad band amplifier incorporating a preamplifier and a final amplifier each with negative feedback |
| 07/01/1981 | EP0031138A1 Transistor push-pull output |
| 06/30/1981 | US4276516 Thermal stress reduction in IC power transistors |
| 06/30/1981 | US4276515 Differential amplifier circuit arrangement with stabilized input impedance |
| 06/30/1981 | US4276514 Wideband, phase compensated amplifier with negative feedback of distortion components in the output signal |
| 06/30/1981 | US4276513 Auto-zero amplifier circuit with wide dynamic range |
| 06/30/1981 | US4276442 Protective circuit |
| 06/30/1981 | CA1104220A1 Gain and impedance switching circuit for an amplifier |
| 06/25/1981 | WO1981001780A1 Bandpass amplifier circuits |
| 06/16/1981 | US4274060 Signal change-over amplifier |
| 06/16/1981 | US4274059 Single ended push-pull amplifier |
| 06/16/1981 | US4274058 Amplifier with separate AC and DC feedback loops |
| 06/16/1981 | US4274018 Saturation limited bias circuit for complementary transistors |
| 06/16/1981 | US4274016 Voltage-to-current converter |
| 06/10/1981 | EP0030125A1 Low noise amplifier circuit |
| 06/03/1981 | EP0029801A1 Circuit arrangement for controlling the output signals from relais |
| 06/03/1981 | EP0029538A1 Integratable circuit preventing the overdrive of a transistor |
| 06/02/1981 | CA1102419A1 Bias current compensated operational amplifier circuit |
| 05/26/1981 | US4270159 Transistor protection circuits |
| 05/20/1981 | EP0028932A1 Folded-cascode amplifier arrangement with cascode load means |
| 05/19/1981 | US4268887 Protective system for power stage of IC amplifier |
| 05/19/1981 | US4268807 Band-pass filter and gain stage |
| 05/19/1981 | US4268798 High performance summing amplifier |
| 05/19/1981 | US4268797 Self-pulsed microwave power amplifier |
| 05/19/1981 | US4268796 Linear amplifier with distortion correction |
| 05/19/1981 | US4268759 Signal-processing circuitry with intrinsic temperature insensitivity |
| 05/19/1981 | CA1101503A1 Interferometric amplifier |
| 05/19/1981 | CA1101502A1 Amplifier device for transmitting tetrode |
| 05/13/1981 | EP0028241A1 Feedback arrangement |
| 05/12/1981 | US4267521 Compound transistor circuitry |
| 05/12/1981 | US4267519 Operational transconductance amplifiers with non-linear component current amplifiers |
| 05/12/1981 | US4267517 Operational amplifier |
| 05/12/1981 | US4267516 Common-emitter fT doubler amplifier employing a feed forward amplifier to reduce non-linearities and thermal distortion |
| 05/06/1981 | EP0028181A1 Device for high-frequency precorrection of non-linearity in signal amplifiers, the signals comprising at least one amplitude-modulated carrier, and television transmitter including such a device |
| 04/28/1981 | US4264981 Circuit arrangement for compensating the change in input capacitance at a first gate electrode of a dual-gate MOS field-effect transistor |
| 04/28/1981 | US4264874 Low voltage CMOS amplifier |
| 04/28/1981 | US4264873 Differential amplification circuit |
| 04/28/1981 | US4264871 Low noise amplifiers |
| 04/28/1981 | CA1100197A1 Power amplifier protection circuit |
| 04/21/1981 | US4263617 System for the transmission of a composite television signal |
| 04/21/1981 | US4263564 Wide-band transistorized amplifier |
| 04/21/1981 | US4263563 Amplifier output stage distortion reduction |
| 04/21/1981 | US4263562 High input impedance transistor amplifier |
| 04/21/1981 | US4263519 Bandgap reference |
| 04/14/1981 | US4262262 Electric amplifier |
| 04/14/1981 | US4262261 Amplifier circuit |
| 04/14/1981 | CA1099349A1 Transistor power amplifiers |
| 04/14/1981 | CA1099342A1 Unbalanced dc voltage detecting circuit |
| 04/07/1981 | USRE30572 Low distortion signal amplifier arrangement |
| 04/07/1981 | US4261004 Semiconductor device |
| 04/07/1981 | US4260956 Temperature compensating bias circuit |
| 04/07/1981 | US4260954 Amplifier load correction system |
| 04/02/1981 | WO1981000938A1 Cmos operational amplifier with improved frequency compensation |
| 04/01/1981 | EP0026056A1 Semiconductor integrated circuit protection arrangement |
| 04/01/1981 | EP0025964A1 Electronic protection for power amplifiers with MOSFET power transistors |
| 03/25/1981 | EP0025680A1 Auto-zero amplifier circuit |
| 03/24/1981 | US4258406 Protecting circuit |
| 03/24/1981 | US4258331 Differential amplifier |
| 03/24/1981 | US4258329 Noise suppression system |
| 03/24/1981 | US4258328 Feed forward microwave amplifier for communication systems |
| 03/13/1981 | EP0020640A4 High efficiency, light weight audio amplifier and power supply. |
| 03/10/1981 | US4255769 Low-noise preamplifier |
| 03/10/1981 | US4255690 Cathode heating apparatus for an electronic power tube |
| 03/10/1981 | CA1097410A1 Commutating autozero amplifier |
| 03/03/1981 | US4254379 Push-pull amplifier circuit |
| 03/03/1981 | CA1096952A1 Feedbackward distortion compensating circuit |
| 02/24/1981 | US4253070 Feedback arrangement |
| 02/24/1981 | US4253033 Wide bandwidth CMOS class A amplifier |
| 02/17/1981 | US4251803 Dynamic zero offset compensating circuit for A/D converter |
| 02/10/1981 | US4250463 Overload protection to prevent saturation of video amplifiers |
| 02/10/1981 | US4250462 Common base connected transistor and bias network |
| 02/03/1981 | US4249136 PWM Signal power amplifier |
| 01/27/1981 | US4247825 Transistor amplifier |
| 01/27/1981 | CA1094652A1 Power amplifier |
| 01/20/1981 | US4246544 Bias circuit for a linear amplifier |
| 01/20/1981 | US4246535 Design method for linear amplifier |
| 01/07/1981 | EP0022015A1 Amplifier arrangement and method of amplification for audio frequencies |
| 01/07/1981 | EP0020640A1 High efficiency, light weight audio amplifier and power supply. |
| 01/06/1981 | US4243946 Class-B current source amplifier |
| 01/06/1981 | US4243943 Feedback systems |
| 12/30/1980 | US4242693 Compensation of VBE non-linearities over temperature by using high base sheet resistivity devices |
| 12/30/1980 | US4242598 Temperature compensating transistor bias device |
| 12/23/1980 | US4241316 Field effect transconductance amplifiers |
| 12/23/1980 | US4241314 Transistor amplifier circuits |
| 12/23/1980 | CA1092202A1 Amplifier system with special feedback circuits |
| 12/16/1980 | US4240042 Bandwidth limited large signal IC amplifier stage |
| 12/16/1980 | US4240040 Operational amplifier |
| 12/16/1980 | US4240038 Preamplifier |
| 12/16/1980 | US4239118 Sorting apparatus having automatic nulling arrangement |
| 12/16/1980 | CA1091776A1 Power amplifier arrangement automatically matched to service conditions |
| 12/11/1980 | WO1980002781A1 Device for the protection of an amplifier against reactive currents,harmful disturbing currents or the like at the output of the amplifier |
| 12/09/1980 | US4238738 Temperature-compensated amplifier circuit |
| 12/09/1980 | US4238737 Biasing arrangement for a push-pull amplifier |
| 12/09/1980 | CA1091309A1 Feed-forward amplifier with simple resistive coupling |