| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 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 |
| 12/02/1980 | US4237426 Transistor amplifier |
| 12/02/1980 | US4237425 Automatic bias adjusting circuit |
| 12/02/1980 | CA1090892A1 Differential amplifier |
| 12/02/1980 | CA1090891A1 Pulse width modulated signal amplifier |
| 12/02/1980 | CA1090890A1 Overload detecting circuit for a pwm amplifier |
| 11/27/1980 | WO1980002625A1 Generator of electric oscillations |
| 11/26/1980 | EP0019279A1 Voltage comparator circuit |
| 11/26/1980 | EP0019095A1 Regulated voltage current supply circuits |
| 11/25/1980 | US4236119 Monolithic wideband amplifier |
| 11/25/1980 | US4236118 Stabilized remote sensing high fidelity apparatus |
| 11/25/1980 | US4236088 Noise-free switching circuit for and method of electronically selecting audio input signals in audio systems |
| 11/25/1980 | CA1090433A1 Audio-frequency power amplifiers |
| 11/18/1980 | US4234854 Amplifier with radial line divider/combiner |
| 11/18/1980 | CA1089994A1 Offset compensating circuit |
| 11/18/1980 | CA1089980A1 Feedback amplifier |
| 11/12/1980 | EP0018767A2 Differential amplifier |
| 11/12/1980 | EP0018571A1 AC voltage amplifier circuitry with several semiconductor amplifier elements operating in the gate (base) circuit |
| 11/11/1980 | CA1089543A1 Push-pull pulse amplifier having improved turn-on and turn-off times |
| 11/04/1980 | US4232273 PNP Output short circuit protection |
| 11/04/1980 | US4232272 Feedback-stabilized multistage frequency-selective amplifier |
| 11/04/1980 | US4232271 Instrumentation amplifier with extended common mode range |
| 11/04/1980 | US4232270 High gain differential amplifier with positive feedback |
| 11/04/1980 | CA1089099A1 Delta-modulation encoder |
| 11/04/1980 | CA1089037A1 Amplifier arrangement |
| 11/04/1980 | CA1089035A1 Push-pull transistor amplifier |
| 10/28/1980 | US4230980 Bias circuit |
| 10/21/1980 | US4229705 Differential amplifiers |
| 10/21/1980 | US4229703 Zero reference and offset compensation circuit |
| 10/21/1980 | US4229692 Linear low drift bridge amplifier |
| 10/21/1980 | CA1088162A1 Power amplifier |
| 10/14/1980 | US4228404 Low voltage compound inverter buffer circuit |
| 10/07/1980 | US4227157 Frequency compensated high frequency amplifiers |
| 10/07/1980 | US4227155 Amplifier with dark current compensation |
| 10/07/1980 | US4227123 Switching amplifier for driving a load through an alternating-current path with a constant-amplitude, varying duty cycle signal |
| 10/01/1980 | EP0016687A2 Variable gain amplifier and device comprising it for the animation of illuminated signs |
| 09/30/1980 | US4225827 Stabilization circuit for transistor RF power amplifiers |
| 09/30/1980 | US4225795 Coincidence circuit for a protective relay circuit |
| 09/30/1980 | CA1086837A1 Low-noise microwave amplifier |
| 09/30/1980 | CA1086836A1 Rf amplifier |
| 09/23/1980 | US4224571 Delta modulation decoder with charge quanta magnitude correction |
| 09/18/1980 | WO1980001975A1 Gain control circuit |
| 09/16/1980 | US4223277 Electrically alterable field effect transistor amplifier configuration |
| 09/16/1980 | US4223276 Voltage follower circuit |
| 09/16/1980 | US4223275 Linear amplifiers |
| 09/16/1980 | US4223273 Power amplifying device for driving loudspeakers |
| 09/09/1980 | CA1085471A1 Audio frequency power amplifier |
| 09/09/1980 | CA1085469A1 Stereo demodulation system |
| 09/04/1980 | WO1980001862A1 Feedback arrangement |
| 09/03/1980 | EP0015091A1 Switching amplifier for driving a load through an alternating-current path |
| 09/02/1980 | US4220932 Buffer amplifier |
| 09/02/1980 | US4220930 Quasi-linear amplifier with feedback-controlled idling currents |
| 08/26/1980 | US4219782 Unity gain amplifier for sourcing current to a capacitive load or the like |
| 08/26/1980 | US4219781 Transistor amplifier circuit |
| 08/26/1980 | CA1084642A1 Bidirectional voice frequency repeater |
| 08/26/1980 | CA1084598A1 Amplifying circuit |
| 08/21/1980 | WO1980001747A1 Semiconductor differential amplifier having feedback bias control for stabilization |
| 08/20/1980 | EP0014526A1 Improvements in or relating to power amplifiers |
| 08/20/1980 | EP0014506A1 Low-pass filter for low-frequency signals |
| 08/20/1980 | EP0014350A1 Monolithically integrated semiconductor circuit |
| 08/19/1980 | US4218660 Audio amplifier and method of operating the same |
| 08/19/1980 | US4218659 Amplifier circuit for a hall-effect head |
| 08/19/1980 | US4218613 Amplifier for electric signals |
| 08/12/1980 | US4217556 Output amplifying circuit |
| 08/12/1980 | US4217555 Amplifier circuit arrangement with stabilized power-supply current |
| 08/06/1980 | EP0014095A1 PNP output short circuit protection |
| 08/06/1980 | EP0014002A2 (1-x)BaO.xTiO2 System dielectric material for use in a microwave device |
| 08/05/1980 | US4216517 Protection circuit for power amplifier |
| 08/05/1980 | US4216437 Protective circuitry for push-pull amplifiers |
| 08/05/1980 | US4216436 High gain differential amplifier |
| 08/05/1980 | US4216435 Voltage-to-current converter apparatus |
| 08/05/1980 | US4216394 Leakage current compensation circuit |
| 08/05/1980 | CA1083233A1 Audio amplifier output circuit |
| 07/29/1980 | US4215322 High frequency oscillating circuit using AT cut quartz crystal vibrator |
| 07/29/1980 | US4215318 Push-pull amplifier |
| 07/29/1980 | US4215317 Compensated operational amplifier circuit |
| 07/24/1980 | WO1980001527A1 Field effect transconductance amplifiers |
| 07/22/1980 | US4214215 Low noise-high gain JFET amplifier for a piezoelectric transducer |
| 07/22/1980 | US4214214 Connecting cable |
| 07/15/1980 | US4213099 Hydrophone preamplifier and calibration circuit |
| 07/15/1980 | US4213098 Semiconductor differential amplifier having feedback bias control for stabilization |
| 07/15/1980 | CA1081805A1 Matrix selection amplifier circuit for low impedance heads in a magnetic disc memory device |
| 07/15/1980 | CA1081803A1 Optimal driver for lsi |
| 07/08/1980 | US4211985 Crystal oscillator using a class B complementary MIS amplifier |
| 07/08/1980 | US4211941 Integrated circuitry including low-leakage capacitance |
| 07/08/1980 | CA1081331A1 Current mirror circuit and apparatus for using same |
| 07/01/1980 | US4210875 Integrated amplifier with adjustable offset voltage |
| 07/01/1980 | US4210873 Gain and impedance switching circuit for an amplifier |
| 07/01/1980 | US4210845 Trirotron: triode rotating beam radio frequency amplifier |
| 06/26/1980 | WO1980001332A1 Method and device for correction of phase shift in amplifying multi-cavity klystron |
| 06/24/1980 | CA1080312A1 Linear high power transistor amplifiers |
| 06/17/1980 | US4208632 Radar receiver |
| 06/17/1980 | CA1079822A1 Travelling wave hybrid junction amplifier |
| 06/12/1980 | WO1980001227A1 Selective amplifier |
| 06/11/1980 | EP0012093A1 Distributed microwave amplifier and amplifying device comprising such an amplifier |
| 06/11/1980 | EP0011705A1 Microphone amplifier, in particular for telephone installations |
| 06/10/1980 | US4207537 Differential field effect transistor amplifier having a compensating field effect transistor current source |
| 06/10/1980 | US4207536 Dual-adjustment balance circuit for operational amplifiers |