Patents
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
11/1984
11/06/1984US4481479 Negative-feedback circuit for an, especially integrated, transistor _amplifier
11/06/1984US4481478 Differential amplifier having a compensation current injection selector network
11/06/1984US4481463 Current mirror circuit
10/1984
10/31/1984EP0123275A2 Operational amplifier circuit
10/30/1984US4480231 Circuit for reducing offset voltage drift in differential amplifiers
10/30/1984US4480230 Large swing CMOS power amplifier
10/30/1984US4480229 Amplifier arrangement with parallel-operated amplifier sections
10/30/1984CA1177125A1 Transimpedance pre-amplifier
10/29/1984EP0112358A4 Current mirror circuit arrangement.
10/24/1984EP0020640B1 High efficiency, light weight audio amplifier and power supply
10/23/1984US4479202 Memory circuit
10/23/1984US4479095 Integrated circuit amplifier for low input voltages
10/23/1984US4479094 Differential amplifier
10/23/1984US4479093 Amplifier having high common mode rejection
10/23/1984US4479086 Transistor circuit
10/23/1984US4479052 Avalanche photo-diode bias circuit
10/23/1984CA1176718A1 Amplifier
10/17/1984EP0121688A1 MOS-transistor amplifier
10/16/1984US4477846 Sensitive amplifier having a high voltage switch
10/16/1984US4477782 Compound current mirror
10/16/1984US4477781 Combined microwave parallel amplifier- RF attenuator/modulator
10/16/1984US4477780 Operational amplifier with multiple switchable outputs
10/16/1984CA1176322A1 Biasing circuit for power amplifier
10/10/1984EP0121027A1 Overdrive thermal distortion compensation for a Quinn cascomp amplifier
10/09/1984US4476444 Power amplifier circuit
10/09/1984US4476443 Transistor circuit
10/09/1984US4476441 Push-pull power amplifier
10/09/1984US4476440 Cross coupled amplifier
10/09/1984US4476439 Level shifting circuit
10/09/1984US4476438 Multiplier circuit including amplifier with drift compensation circuit
10/09/1984US4476436 Power amplifier
10/03/1984EP0120756A1 Oscillator comprising high-frequency bandpass amplifier having an adaptable impedance
10/03/1984EP0120543A1 Tunable receiver input circuit
10/03/1984EP0120125A1 Bias circuit which is independent of output device voltage characteristics for biassing an amplifier in class AB operation
10/02/1984US4475087 Voltage follower circuit
10/02/1984US4475077 Current control circuit
09/1984
09/26/1984EP0119927A1 High voltage amplifier for a capacitive load
09/26/1984EP0119644A1 Impedance buffer
09/25/1984US4473804 Linear class B transconductance power amplifier
09/25/1984US4473794 Current repeater
09/25/1984US4473780 Amplifier circuit and focus voltage supply circuit incorporating such an amplifier circuit
09/19/1984EP0108792A4 Fet amplifier with wide dynamic range.
09/18/1984US4472687 Audio power amplifier for supplying electric power to a load by switching of power supply voltage
09/12/1984EP0118178A1 Offset balancing method and apparatus for a DC amplifier
09/12/1984EP0118166A1 High frequency differential amplifier with adjustable damping factor
09/11/1984US4471323 Protection circuits for complementary direct-coupled amplifiers
09/11/1984US4471322 Power amplifier
09/11/1984US4471321 Input current compensation circuit for superbeta transistor amplifier
09/11/1984US4471319 FET Buffer amplifier with improved noise rejection
09/11/1984US4471316 Electric oscillation generator
09/11/1984US4471315 Differential amplifier circuit
09/11/1984US4471292 MOS Current mirror with high impedance output
09/11/1984US4471280 Anti-log power amplifier for reversible D.C. motor in automotive steering controls
09/05/1984EP0117625A1 Differential amplifier having balanced output
09/05/1984EP0117434A1 Hybrid microwave subsystem
09/04/1984US4470020 Virtual ground preamplifier for magnetic phono cartridge
08/1984
08/29/1984EP0116995A1 Current stabilizing arrangement
08/28/1984US4468630 Wide-band amplifier for driving capacitive load
08/28/1984US4468629 NPN Operational amplifier
08/28/1984US4468628 Differential amplifier with high common-mode rejection
08/28/1984US4468626 Polyphase PDM amplifier
08/28/1984CA1173559A1 Active aerial for radios and aerial arrays
08/28/1984CA1173524A1 Pulse width modulator
08/28/1984CA1173523A1 Operational amplifier
08/21/1984US4467290 Signal amplifier with wide linear dynamic range
08/21/1984US4467289 Current mirror circuit
08/21/1984US4467288 Distortion-free complemented error feedback amplifier and method
08/21/1984US4467226 Darlington complementary circuit for preventing zero crossover distortion
08/21/1984US4467204 Polarimeter system
08/21/1984US4467203 Low noise amplifier and method for energy biased radiation sensitive receiver
08/21/1984US4467191 Photo diode with auxiliary photo diode regulator
08/21/1984CA1173119A1 Bias generator
08/21/1984CA1173118A1 Intergrator with sampling stage
08/15/1984EP0115949A1 High impedance buffer
08/14/1984US4465979 UHF antenna amplifier having planar transformers
08/14/1984CA1172711A1 Current mirror circuit
08/08/1984EP0115212A1 Signal processing circuits
08/08/1984EP0115165A2 Active load circuit
08/08/1984EP0115003A1 Current source
08/07/1984US4464785 Loudspeaker system
08/07/1984US4464636 Wideband IF amplifier with complementary GaAs FET-bipolar transistor combination
08/07/1984US4464634 Audio power amplifier
08/07/1984US4464631 Circuit for trimming FET differential pair offset voltage without increasing the offset voltage temperature coefficient
08/07/1984US4464630 Transimpedance pre-amplifier
08/07/1984CA1172319A1 Signal processing circuit
08/01/1984EP0114731A1 Differential amplifier with high common-mode rejection
08/01/1984EP0114314A2 Digitally switched analog signal conditioner
07/1984
07/31/1984US4463319 Operational amplifier circuit
07/31/1984US4463318 Power amplifier circuit employing field-effect power transistors
07/31/1984CA1171924A1 Power amplifier
07/24/1984US4462005 Current mirror circuit
07/24/1984US4462004 Dynamic class-4 FET amplifier
07/24/1984US4462002 Trimming circuits for precision amplifier
07/24/1984CA1171457A1 Current stabilizer comprising enhancement field- effect transistors
07/17/1984US4460875 Negative feedback amplifiers including directional couplers
07/17/1984US4460874 Three-terminal operational amplifier/comparator with offset compensation
07/17/1984US4460873 Active differential output direct current offset voltage compensation circuit for a differential amplifier
07/17/1984US4460872 Low noise differential amplifier
07/11/1984EP0113224A1 Signal translating circuits
07/10/1984US4459555 MOS Differential amplifier gain control circuit