| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 08/23/1977 | US4044313 Protective network for an insulated-gate field-effect (IGFET) differential amplifier |
| 08/16/1977 | US4042889 Overvoltage protection circuit for general purpose amplifier |
| 08/16/1977 | US4042888 Signal amplifier apparatus with fail-safe limited gain |
| 08/16/1977 | US4042887 Broad band amplifier |
| 08/16/1977 | US4042886 High input impedance amplifier circuit having temperature stable quiescent operating levels |
| 08/09/1977 | US4041411 Quantized amplifier |
| 08/09/1977 | US4041410 RF level detector |
| 08/09/1977 | US4041407 Driver circuit for developing quiescent and dynamic operating signals for complementary transistors |
| 08/02/1977 | US4039963 Stabilizer for the base level of an amplifier |
| 07/26/1977 | US4038607 Complementary field effect transistor amplifier |
| 07/19/1977 | US4037169 Transistor amplifier |
| 07/19/1977 | US4037147 Isolation amplifier for resistive and inductive loads |
| 07/19/1977 | US4037140 Protection circuit for insulated-gate field-effect transistors (IGFETS) |
| 07/19/1977 | US4037118 Circuit arrangement for electronically applying an alternating voltage |
| 07/19/1977 | US4036763 Noise and drift correcting amplifier circuit for a live-scan imaging system |
| 07/12/1977 | US4035840 Television display apparatus having a video amplifier |
| 07/12/1977 | US4035738 Low noise amplifier |
| 07/05/1977 | US4034268 Speaker protection circuit |
| 06/28/1977 | US4032864 Electronic circuit having a misfet as an amplifying element |
| 06/28/1977 | US4032855 Phonograph preamplifier network with infrasonic cutoff response |
| 06/21/1977 | US4031482 Bias circuit for FET |
| 06/07/1977 | US4028634 Feed-forward amplifier with simple resistive coupling |
| 06/07/1977 | US4028564 Compensated monolithic integrated current source |
| 05/31/1977 | US4027271 Capacitor structure and circuit facilitating increased frequency stability of integrated circuits |
| 05/31/1977 | US4027270 Class ABC amplifier circuit |
| 05/31/1977 | US4027269 Audio line driver amplifier |
| 05/24/1977 | US4025870 Low distortion amplifier having high slew rate and high output impedance |
| 05/24/1977 | US4025869 Solid state amplifier |
| 05/10/1977 | US4023111 Current limiting driver circuit |
| 05/10/1977 | US4023074 Loudspeaker protection network |
| 05/03/1977 | US4021751 Field effect transistor amplifier |
| 05/03/1977 | US4021749 Signal amplifying circuit |
| 05/03/1977 | US4021747 Signal amplifier circuit using a pair of complementary junction field effect transistors |
| 05/03/1977 | US4021746 Transistor amplifier having field effect transistors with stabilized drain bias current |
| 05/03/1977 | US4021701 Transistor protection circuit |
| 04/26/1977 | US4020397 Parallel transistor protection circuit |
| 04/19/1977 | US4019150 PA protection circuit for a single sideband radio |
| 04/19/1977 | US4019121 Circuit arrangement for producing a compensated current |
| 04/19/1977 | US4019049 Photoelectric transducing unit and system for detecting the sharpness of the image of object by means of the unit |
| 04/12/1977 | US4017749 Transistor circuit including source voltage ripple removal |
| 04/05/1977 | US4016503 High-reliability power amplifier |
| 04/05/1977 | US4016501 Switching amplifier system |
| 04/05/1977 | US4016497 Feedbackward distortion compensating circuit |
| 04/05/1977 | US4016460 Electronic protection for power amplifier |
| 04/05/1977 | US4016434 Load gate compensator circuit |
| 03/29/1977 | US4015219 Electronic circuit using field effect transistor with compensation means |
| 03/29/1977 | US4015215 Push-pull power amplifier circuit |
| 03/29/1977 | US4015214 Push-pull amplifier |
| 03/29/1977 | US4015149 Temperature compensating device for devices having semiconductors |
| 03/22/1977 | US4013940 Semiconductor circuit device |
| 03/08/1977 | US4011519 Transistor amplifier circuit |
| 03/08/1977 | US4011518 Microwave GaAs FET amplifier circuit |
| 03/01/1977 | US4010486 Sensing circuits |
| 03/01/1977 | US4010426 Rf power amplifier parallel redundant system |
| 02/15/1977 | US4008442 Signal amplifier circuit with a field effect transistor having current unsaturated triode vacuum tube characteristics |
| 02/15/1977 | US4008406 Electronic circuit using field effect transistor with compensation means |
| 02/01/1977 | US4006428 Amplifier circuit having integral means for detecting and preventing non-linear operation |
| 01/25/1977 | US4005373 Transient elimination circuit |
| 01/25/1977 | US4005342 Integrated circuit overvoltage protection circuit |
| 01/18/1977 | US4004244 Dynamic current supply |
| 01/18/1977 | US4004243 Amplifier with current gain inversely proportional to transistor hfe |
| 01/18/1977 | US4004242 Apparatus for supplying symmetrically limited bidirectional signal currents |
| 01/18/1977 | US4004241 Hybrid feedback amplifier of a push-pull type |
| 01/18/1977 | US4004190 Electrical amplifiers |
| 01/18/1977 | US4004164 Field effect transistor |
| 01/04/1977 | US4001707 Amplifier circuit |
| 12/28/1976 | US4000474 Signal amplifier circuit using a field effect transistor having current unsaturated triode vacuum tube characteristics |
| 12/21/1976 | US3999142 Variable tuning and feedback on high power microwave transistor carrier amplifier |
| 12/21/1976 | US3999140 Bias current circuit |
| 12/21/1976 | US3999139 Monolithic alternately stacked IF amplifier |
| 12/21/1976 | US3999082 Charge coupled amplifier |
| 12/14/1976 | US3997852 RF amplifier |
| 12/14/1976 | US3997850 Floating electrical output circuit |
| 12/14/1976 | US3997849 Push-pull amplifier |
| 12/07/1976 | US3996524 Linear amplifier utilizing adaptive biasing |
| 12/07/1976 | US3996498 Current limiting circuit and method |
| 12/07/1976 | US3996497 Protective circuit |
| 11/30/1976 | US3995229 High slew rate operational amplifier circuit |
| 11/30/1976 | US3995114 Ultra low current amplifier |
| 11/23/1976 | US3993961 Overcompensated feedforward method and apparatus using overdistorted main amplifiers |
| 11/16/1976 | US3992678 Protective circuit for transistor amplifier |
| 11/16/1976 | US3992677 Muting circuit |
| 11/02/1976 | US3990020 DC linear power amplifier |
| 11/02/1976 | US3990019 Power amplifier having protective circuits |
| 10/26/1976 | US3988695 Protection circuit for output stage of low frequency amplifiers |
| 10/26/1976 | US3988693 Complementary push-pull amplifier device with protective circuit means |
| 10/26/1976 | US3988689 Offset corrected amplifier |
| 10/26/1976 | US3988642 Electronic cut out for a circuit to be protected |
| 10/19/1976 | US3987317 Transistor biasing circuit |
| 10/12/1976 | US3986133 Wide-band transistor amplifier |
| 10/12/1976 | US3986060 Compound transistor circuitry |
| 10/12/1976 | US3986058 Transistor biasing circuit |
| 10/05/1976 | US3984783 Amplifier |
| 10/05/1976 | US3984782 Bias control circuit for an audio amplifier utilizing an unsaturated junction type FET |
| 10/05/1976 | US3984781 Bias control circuit for an audio amplifier utilizing an unsaturated junction type FET |
| 09/28/1976 | US3983502 Bridge-output amplifier with direct-coupled differential-mode feedback |
| 09/21/1976 | US3982197 Radiation responsive voltage dividing circuit |
| 09/14/1976 | US3980963 Stabilized transistor amplifier |
| 09/14/1976 | US3980930 Protection circuit |
| 09/07/1976 | US3979690 Failsafe controlled gain inverting amplifier apparatus |