| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 03/16/1982 | US4320353 Solid-state amplifier circuit for high-frequency signals |
| 03/16/1982 | US4320351 Differential amplifying system with bootstrapping |
| 03/16/1982 | US4320350 Sliding power supply for RF power amplifier |
| 03/16/1982 | US4320347 Switched capacitor comparator |
| 03/10/1982 | EP0046878A2 Feedback amplifier or threshold switch for a current-fed differential stage |
| 03/09/1982 | US4319199 Efficient power amplifier with staggered power supply voltages |
| 03/09/1982 | US4319198 Power amplifiers |
| 03/04/1982 | WO1982000739A1 Power amplifier |
| 03/02/1982 | US4318164 High frequency switching circuit having preselected parameters to reduce power dissipation therein |
| 03/02/1982 | US4318054 Input circuit of audio amplifier |
| 03/02/1982 | US4318052 Wideband high voltage video amplifier |
| 02/24/1982 | EP0046421A1 Receiver for a signal-transmission system by electromagnetic, especially infra.red radiation |
| 02/23/1982 | US4317082 Current mirror circuit |
| 02/23/1982 | US4317081 Single-ended push-pull power amplifier having improved high frequency characteristics |
| 02/23/1982 | US4317055 High-voltage circuit for insulated gate field-effect transistor |
| 02/18/1982 | WO1982000550A1 Cascode current source |
| 02/17/1982 | EP0045895A1 Device for changing the electrical configuration of integrated circuits |
| 02/17/1982 | EP0045841A1 Linear voltage-current converter |
| 02/16/1982 | US4316149 Power amplifier |
| 02/16/1982 | US4316103 Circuit for coupling signals from a sensor |
| 02/16/1982 | US4316102 Input stage using junction field effect transistors for biasing |
| 02/10/1982 | EP0045691A2 Low output impedance stage for capacitive or direct coupling |
| 02/09/1982 | US4315227 Generalized switched-capacitor active filter |
| 02/09/1982 | US4315223 CMOS Operational amplifier with improved frequency compensation |
| 02/09/1982 | US4315222 Power combiner arrangement for microwave amplifiers |
| 02/09/1982 | US4315221 Switching circuit |
| 02/09/1982 | US4315211 Preamplifier for voltage measuring instrument with non-interacting zero and span controls |
| 02/05/1982 | EP0037406A4 Cmos operational amplifier with reduced power dissipation. |
| 02/04/1982 | WO1982000391A1 A dual bandwidth autozero loop for a voice frequency codec |
| 02/02/1982 | US4314374 High power audio frequency transmitter |
| 02/02/1982 | US4314252 Preamplifier for ADF loop antenna |
| 02/02/1982 | US4314152 Monolithically integrable semiconductor circuit with an amplifier controlled by a photo diode |
| 02/02/1982 | CA1117432A1 Amplifying and equalizing |
| 01/27/1982 | EP0044742A2 Capacitor element |
| 01/27/1982 | EP0044339A1 Current mirror circuit. |
| 01/26/1982 | US4313090 Car-mounted audio equipment |
| 01/26/1982 | US4313065 Switching circuit with MOS field effect transistor |
| 01/21/1982 | WO1982000227A1 Circuit for obtaining a signal and a symmetrical signal from an asymmetrical signal |
| 01/19/1982 | US4312060 Preamplifier for phonograph pickup |
| 01/19/1982 | US4311966 Distributed amplifier for microwave frequencies |
| 01/19/1982 | US4311965 Modular amplifier with discrete power reduction switching |
| 01/19/1982 | US4311929 Summing amplifier |
| 01/13/1982 | EP0043707A1 Audio-frequency power amplifier |
| 01/13/1982 | EP0043699A1 Operational amplifier |
| 01/12/1982 | CA1116251A1 Radio frequency energy combiner or divider |
| 01/07/1982 | WO1982000071A1 Low power differential amplifier |
| 01/05/1982 | US4309665 Complementary amplifier circuit |
| 01/05/1982 | CA1115790A1 Mos fet amplifier |
| 12/29/1981 | US4308504 Direct-coupled amplifier circuit with DC output offset regulation |
| 12/29/1981 | CA1115360A1 Pwm signal power amplifier |
| 12/29/1981 | CA1115359A1 Pulse signal amplifier |
| 12/29/1981 | CA1115347A1 Grounded rf power amplifier circuit apparatus |
| 12/23/1981 | EP0042272A1 A pulse width modulation system |
| 12/23/1981 | EP0042264A1 Circuit for supplying an amplitude modulated current to an R.F. stage of a radio transmitter |
| 12/22/1981 | US4307349 Impatt amplifiers |
| 12/16/1981 | EP0041566A1 Bandpass amplifier circuits |
| 12/15/1981 | US4306200 Selective amplifier |
| 12/15/1981 | US4306199 Push-pull amplifier |
| 12/15/1981 | US4306196 Operational amplifier with offset compensation |
| 12/15/1981 | US4306145 High stability no feedback optical transistor amplifier system |
| 12/08/1981 | US4305043 Coupler having arbitrary impedance transformation ratio and arbitrary coubling ratio |
| 12/08/1981 | CA1114035A1 Source follower circuit using fets |
| 12/08/1981 | CA1114015A1 Apparatus for protecting power transistors in an h configuration power amplifier |
| 12/02/1981 | EP0040844A1 Drive circuit for inductively loaded tubes |
| 12/01/1981 | US4303892 Unconditionally stabilized microwave transistor amplifier |
| 12/01/1981 | US4303891 Monolithic integrated circuit with frequency dependent amplification |
| 11/24/1981 | US4302726 Current sources |
| 11/24/1981 | US4302685 Linear output stage for charge-coupled circuits |
| 11/24/1981 | US4302668 Variably biased photoelectric circuit |
| 11/24/1981 | CA1113160A1 Electronic circuitry for multiplying/dividing analog input signals |
| 11/17/1981 | US4301421 Direct-coupled amplifier with output offset regulation |
| 11/17/1981 | US4301420 Frequency characteristic-adjusting apparatus |
| 11/11/1981 | EP0039430A2 Audio power amplifier with D-class push-pull end stage |
| 11/10/1981 | US4300103 Push-pull amplifier |
| 11/10/1981 | CA1112354A1 Circuit arrangement a portion of which is included within in a monolithic integrated semiconductor body |
| 11/04/1981 | EP0039076A1 Integrator circuit with sampling stage |
| 11/03/1981 | US4298844 Split-band redundant amplifier system |
| 10/28/1981 | EP0038440A2 Switching stage for controlling a tetrode |
| 10/27/1981 | US4297647 Hybrid integrated circuit and a method for producing the same |
| 10/27/1981 | US4297646 Current mirror circuit |
| 10/27/1981 | US4297644 Amplifier with cross-over current control |
| 10/27/1981 | US4297595 Signal regenerating circuit with improved input-output isolation |
| 10/27/1981 | CA1111560A1 Sensing circuit for semiconductor charge transfer devices |
| 10/27/1981 | CA1111520A1 Electronic apparatus comprising an audio amplifier providing shunt voltage regulation |
| 10/27/1981 | CA1111518A1 Pulse width modulated signal amplifier |
| 10/21/1981 | EP0037818A1 Current source having saturation protection. |
| 10/20/1981 | US4296383 Balancing amplifier |
| 10/20/1981 | US4296382 Class AB push-pull FET amplifiers |
| 10/20/1981 | US4296381 Distortion reduction circuit for an inverting feedback amplifier |
| 10/14/1981 | EP0037406A1 Cmos operational amplifier with reduced power dissipation. |
| 10/13/1981 | US4295101 Class AB push-pull quasi-linear amplifiers |
| 10/13/1981 | US4295100 Microphone amplifier, in particular for telephone systems |
| 10/06/1981 | US4293824 Linear differential amplifier with unbalanced output |
| 10/06/1981 | US4293823 Balanced input phonograph preamplifier circuit |
| 10/06/1981 | US4293819 High-speed low-drift operational amplifier |
| 10/01/1981 | WO1981002820A1 Split-band redundant amplifier system |
| 09/29/1981 | US4292597 Circuit for converting single-ended input signals to a pair of differential output signals |
| 09/29/1981 | US4292595 Capacitance coupled isolation amplifier and method |
| 09/29/1981 | US4292584 Constant current source |
| 09/23/1981 | EP0036096A2 Transistor differential circuit with exponential transfer characteristic |