Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
12/1988
12/01/1988DE3715731A1 Amplifier with feedback
11/1988
11/30/1988EP0293039A1 Bipolar transistor amplifier
11/29/1988US4788508 Pop noise suppression circuit for audio amplifier
11/23/1988EP0292105A2 Audio amplifier protection circuit
11/23/1988CN86108332A Method for improving semiconductor circuit
11/22/1988US4786970 Logarithmic amplifier
11/22/1988US4786881 Amplifier with integrated feedback network
11/22/1988US4786877 Amplifier for voltage or current to frequency converter
11/17/1988DE3812733A1 Short-circuit protection circuit
11/15/1988US4785258 CMOS amplifier circuit which minimizes power supply noise coupled via a substrate
11/15/1988US4785257 Power amplifier circuit for an audio circuit
11/15/1988US4785237 Amplifier with D.C. compensation
11/15/1988CA1244894A1 Low voltage class b amplifier with low value decoupling capacitors
11/09/1988EP0290277A2 A low noise integrated active load circuit
11/09/1988EP0289807A2 Method for the temperature compensation of electric networks, and arrangements therefor
11/02/1988EP0289130A2 Radio transmitters
11/02/1988EP0289099A1 Negative-feedback amplifier with accurately defined input or output impedance combined with high or low output or input impedance respectively
11/02/1988EP0288697A2 Scaled voltage level translator circuit
11/01/1988US4782307 Feed-forward microwave amplifier arrangement with ferrite temperature compensation
11/01/1988US4782306 Power amplifier
10/1988
10/26/1988EP0288303A2 Improved differential single-ended converter
10/26/1988EP0112358B1 Current mirror circuit arrangement
10/25/1988US4780685 Composite power amplifier with redundancy
10/25/1988US4780625 Integrated circuit sensor circuit
10/20/1988WO1988008226A1 Asymmetrical dual input amplifier
10/20/1988WO1988008225A1 Broadband, high speed video amplifier
10/20/1988WO1988008224A1 Output amplifier
10/19/1988EP0287063A2 Circuit for automatically controlling the gain-bandwidth product of operational amplifiers
10/18/1988US4779057 Cascode amplifier with nonlinearity correction and improve transient response
10/18/1988US4779012 Track-and-hold amplifier
10/12/1988CN87102520A Components for operational amplifier with high impedance and low leakage current
10/11/1988US4777518 Semiconductor device including gate protection circuit with capacitor under input pad
10/11/1988US4777392 Voltage repeater circuit for loads with a resistive component with harmonic distortion compensation
10/06/1988WO1988007787A1 Semiconductor emulation of tube amplifiers
10/05/1988EP0285483A1 Low-noise broadband amplifier for metric waves
10/04/1988US4775844 Bridge amplifier topology
10/04/1988US4775842 Multi-output feedback amplifier
09/1988
09/28/1988EP0284092A2 Differential Amplifier
09/28/1988EP0283865A1 Pinchoff voltage generator
09/27/1988US4774478 Feedback amplifier compensation circuitry
09/27/1988US4774477 Power amplifier having low intermodulation distortion
09/27/1988US4774476 Linearized differential amplifier
09/27/1988US4774475 Linearized differential fT doubler amplifier
09/22/1988WO1988007267A1 Adaptive thermal protection for a power amplifier by remote sense
09/21/1988EP0283143A2 Power amplifier having low intermodulation distortion
09/21/1988EP0282529A1 Auto zero circuit for flow meter.
09/20/1988US4772859 Microwave temperature compensated cascadable amplifier for fiber optical receiver
09/20/1988US4772857 Amplifying circuit
09/20/1988US4772856 Power amplifier
09/20/1988US4772855 Linearizer for microwave power amplifiers
09/14/1988EP0281684A1 Over-voltage-protected Darlington switch
09/07/1988EP0281117A2 Pop noise suppression circuit for audio amplifier
09/06/1988US4769714 Noise and arc suppression filter for a display driver stage
09/06/1988US4769619 Compensated current mirror
09/06/1988US4769615 Power supply and signal amplifier and method of operation
09/06/1988US4769560 Semiconductor device having darlington-connected transistor circuit
08/1988
08/31/1988EP0280356A2 Linearizer for microwave power amplifiers
08/31/1988EP0280327A2 Audio output amplifier
08/31/1988EP0279993A2 A circuit for removing unwanted temporal portions of a voltage varying signal
08/30/1988US4767946 High-speed supply independent level shifter
08/30/1988CA1241391A1 Automatic reduction of intermodulation products in high power linear amplifiers
08/25/1988WO1988006379A1 Correction circuit for an amplifier
08/24/1988EP0279694A2 Audio amplifier
08/24/1988EP0279345A1 Device comprising an electronic circuit for analogous signal processing
08/24/1988EP0093140B1 Amplifier suitable for low supply voltage operation
08/23/1988US4766396 Current source type current output circuit using current mirrors
08/16/1988US4764736 Amplifier for high frequency signal
08/16/1988US4764733 Asymmetrical dual input amplifier
08/10/1988EP0277636A2 Nonlinear signal generating circuit and nonlinear compensating device using the same
08/09/1988US4763082 Selectable tuner preamplifier
08/09/1988US4763028 Circuit and method for semiconductor leakage current compensation
08/03/1988EP0276670A1 High-speed supply independent level shifter
08/02/1988US4761615 Voltage repeater circuit with low harmonic distortion for loads with a resistive component
07/1988
07/27/1988EP0275940A2 Differential amplifier with controllable power consumption
07/27/1988EP0275302A1 Correlated sampling amplifier.
07/26/1988US4760587 Device for transmitting high-frequency pulses in a certain pattern and a radio-navigation system including such a device
07/26/1988US4760486 Protection device against flashover in a transmitter circuit
07/26/1988US4760349 CMOS analog standard cell arrays using linear transconductance elements
07/26/1988US4760345 Charge amplifier circuit
07/26/1988US4760319 Circuit for removing unwanted slope transitions from an incoming signal
07/26/1988US4760284 Pinchoff voltage generator
07/20/1988CN87100144A Transistor amplifier with highly stabilized operating point
07/19/1988US4758873 Balanced MOS capacitor with low stray capacitance and high ESD survival
07/19/1988US4758799 Broadband, high speed video amplifier
07/19/1988US4758798 Output amplifier
07/12/1988US4757274 Input compensation circuit for superbeta transistor amplifier
07/12/1988US4757271 Composite audio amplifier
07/12/1988US4757270 High gain feedback amplifier
07/05/1988US4755770 Low noise current spectral density input bias current cancellation scheme
07/05/1988US4755769 Power reducible composite signal source
07/05/1988US4755768 Amplifier and display using the former
07/05/1988US4755766 Differential to single-ended converter
06/1988
06/30/1988WO1988004867A1 A method and an arrangement for increasing the dynamic range at an input stage of an optical receiver
06/29/1988EP0272702A2 System for automatically controlling the gain-bandwidth product of operational amplifiers
06/28/1988US4754234 Broadband distributed amplifier for microwave frequences
06/28/1988CA1238695A1 Folded cascode field-effect transistor amplifier with increased gain
06/21/1988US4752747 Device for increasing the output power of a low-tension operated radio set, particularly of the car radio set type
06/21/1988US4752744 Balanced transformer-less amplifier circuit
06/21/1988US4752743 For pre-distorting the input signal
06/21/1988CA1238367A1 Device for limiting the power transmission of radiowave transmitters