Patents
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
09/1976
09/07/1976US3979689 Differential amplifier circuit
09/07/1976US3979688 Transistor amplifier of the Darlington type with internal bias providing low offset voltage and offset current drift
09/07/1976US3979642 Electronic protective circuit
08/1976
08/31/1976US3978419 Temperature and supply voltage compensated amplifying device
08/24/1976US3976955 Protective circuit for pulse width modulated signal amplifier
08/17/1976US3975649 Electronic circuit using field effect transistor with compensation means
08/10/1976US3974456 Amplifier output stage
08/10/1976US3974455 Transistor amplifier
08/10/1976US3974438 Apparatus for indicating over-current condition in a transistor amplifier
08/10/1976US3974404 Integrated circuit interface stage for high noise environment
08/10/1976US3973461 Distortion control circuit
08/03/1976US3973215 Current mirror amplifier
08/03/1976US3973214 Circuit to achieve low noise figure
08/03/1976US3972949 Process for preparing glycol dimethyl ethers
07/1976
07/27/1976US3972004 Charge preamplifier
07/27/1976US3972002 Dual feedback amplifier
07/27/1976US3972001 Common mode rejection dynamic filter circuit
07/27/1976US3971993 High capacity recirculating delay loop integrator
07/20/1976US3970953 Distortion-free amplifiers
07/20/1976US3970947 Multi-stage differential amplifier circuit with means for compensating the temperature drift of a constant current source transistor
07/13/1976US3969679 Automatic crossover distortion correction circuit
07/13/1976US3969637 Transistor circuit
07/06/1976US3968451 Transistor amplifier
07/06/1976US3968450 Transistor amplifier
07/06/1976US3968382 Protective circuit for field effect transistor amplifier
06/1976
06/29/1976US3967295 Input transient protection for integrated circuit element
06/29/1976US3967208 Amplifying integrated circuit in the MOS technology
06/29/1976US3967207 Amplifier with over-current protection
06/22/1976US3965433 Phase equalizer useable in a LIND amplifier
06/22/1976US3965295 Protective system for stereo loudspeakers
06/15/1976US3963993 Power amplifier using a plurality of parallel connected amplifier elements and having burn-out protection
06/08/1976US3962607 Loudspeaker protective system
06/01/1976US3961280 Amplifier circuit having power supply voltage responsive to amplitude of input signal
05/1976
05/25/1976US3959736 Loudspeaker protection circuit
05/25/1976US3959735 Loudspeaker and amplifier protection circuit
05/18/1976US3958185 Low noise amplifier
05/18/1976US3958135 Current mirror amplifiers
05/04/1976US3955151 Amplifier with a plurality of negative feedback circuits
05/04/1976US3955147 Amplifier circuit
05/04/1976US3955146 Circuit for coupling an antenna to a load
05/04/1976US3955108 Transistor amplifier stage with device in its temperature compensated bias network used as preliminary amplifier
04/1976
04/27/1976US3953875 Capacitor structure and circuit facilitating increased frequency stability of integrated circuits
04/27/1976US3953808 Solid state amplifier
04/27/1976US3953807 Current amplifier
04/20/1976US3952260 Distortion correction circuit
04/20/1976US3952258 Parellel-connection of semiconductor systems with an arrangement for preventing thermal instability
04/20/1976US3952256 Multi-impedance output for transistor power amplifier
04/06/1976US3949317 Fast recovery limiting and phase inverting amplifier
04/06/1976US3949316 Cascade-connected transistor amplifier
03/1976
03/23/1976US3946327 Amplifier employing complementary field-effect transistors
03/23/1976US3946325 Transistor amplifier
03/16/1976US3944944 Power amplifier with distortion control
03/02/1976US3942128 Constant-voltage circuit
03/02/1976US3942075 Semi-conductor thermal protection arrangement
03/02/1976US3942046 Low output impedance voltage divider network
02/1976
02/24/1976US3940785 Semiconductor I.C. with protection against reversed power supply
02/24/1976US3940683 Active breakdown circuit for increasing the operating range of circuit elements
02/24/1976US3940678 Multi-input switching means
02/17/1976US3939435 Power amplifier
02/17/1976US3939434 Wideband DC current amplifier
02/17/1976US3939433 Feedback circuit
02/10/1976US3938057 Telecommunications signal amplifier
02/10/1976US3938047 Control circuit for use with amplifier
02/03/1976US3936759 Offset reduction apparatus for analog circuits
02/03/1976US3936731 Amplifier with fast recovery after input signal overswing
02/03/1976US3936473 Copper or noble metal salt, oxygen and organic acid catalyst
01/1976
01/27/1976US3935540 D.C. coupled impedance reducing circuit
01/27/1976US3935513 Protective circuit for transistor amplifier
01/20/1976US3934158 Switching circuit
01/13/1976US3932774 Electronic monitoring system with short-circuit protection
01/06/1976US3931583 Wideband differential amplifier
01/06/1976US3931547 Protection circuit