Patents
Patents for H03G 1 - Details of arrangements for controlling amplification (4,021)
04/1997
04/15/1997US5621358 Transconductor stage with controlled gain
04/10/1997WO1997013121A1 Optical encoder for indicating the position of an adjustable member
04/10/1997DE19537537A1 Amplifier with multiple DC-coupled amplification stages
04/10/1997DE19536281A1 Wide-band amplifier device with dc coupled cascade stages e.g. for ultrasonic device
04/08/1997US5619169 Variable gain differential amplifier
04/02/1997CN1146670A Radio transmitter
04/02/1997CN1146669A Power control circuit or transmission equipment
03/1997
03/19/1997EP0763887A1 Circuit for automatically regulating the gain of a differential amplifier
03/12/1997EP0762638A2 Transmitting apparatus and method of adjusting gain of signal to be transmitted, and receiving apparatus and method of adjusting gain of received signal
03/05/1997CN1144427A High-frequency amplifier, transmitting device and receiving device
02/1997
02/25/1997US5606277 AC coupling loops for current-to-voltage transimpedance amplifiers and methods of using same
02/18/1997US5604460 Amplifier array and receiver circuit that includes the amplifier array
02/18/1997US5604458 Scaler circuit
02/13/1997WO1997005695A1 Field effect transistor cable television line amplifier
02/11/1997US5602511 Capacitive transimpedance amplifier having dynamic compression
02/06/1997WO1997004431A1 Remote control device for an entertainment system
02/06/1997CA2226081A1 Remote control device for an entertainment system
02/05/1997EP0757439A2 A variable resistor circuit, a variable attenuator circuit and a variable gain amplifier
02/04/1997US5600278 Programmable instrumentation amplifier
02/01/1997CA2182352A1 Variable resistor circuit, a variable attenuator circuit and a variable gain amplifier
01/1997
01/29/1997EP0756374A1 Gain selection technique
01/28/1997US5598162 Removable audio remote controller for a microphone
01/21/1997US5596651 System and method for electronic volume control of audio signals
01/14/1997US5594633 Voltage-to-current converting circuit operating with low supply voltage
01/14/1997US5594408 Potentiometer
01/02/1997EP0751626A2 Radio transmitter
01/01/1997CN1139320A Transmitter having temperature-compensated detector
12/1996
12/31/1996US5589791 Variable gain mixer having improved linearity and lower switching noise
12/24/1996US5587689 Voltage controlled amplifier with a negative resistance circuit for reducing non-linearity distortion
12/24/1996US5587688 Differential automatic gain-control amplifier having an enhanced range
12/24/1996US5587679 Pulse generator including slew rate controller without complementary transistors
12/19/1996DE19529187A1 Precise control of attenuator in aerial pre amplifier
12/18/1996EP0620955B1 Programmable gain amplifier
12/17/1996US5586146 Programmable voltage controlled attenuator
12/12/1996DE19622627A1 Automatic amplifier control and regulation system esp. for video signals
12/11/1996EP0748044A2 Variable gain mixer having improved linearity and lower switching noise
12/03/1996US5581213 Variable gain amplifier circuit
11/1996
11/27/1996EP0744828A2 Transimpedance amplifier circuit
11/26/1996US5578959 Integrated circuit with an electrically adjustable parameter
11/21/1996WO1996013896A3 A gain controllable amplifier, a receiver comprising a gain-controllable amplifier, and a method of controlling signal amplitudes
11/19/1996US5576662 For amplifying a received signal
10/1996
10/30/1996EP0740422A2 Power control circuit for transmission apparatus
10/30/1996EP0739549A1 Method and apparatus for calibrating a gain control circuit
10/23/1996EP0738883A2 Ultrasonic transducer with integrated controllable amplifier
10/16/1996EP0737381A1 A gain controllable amplifier, a receiver comprising a gain-controllable amplifier, and a method of controlling signal amplitudes
10/10/1996DE19512613A1 Automatic control of sensitivity at start of measurement esp. for inductive rpm sensor e.g. in motor vehicle
09/1996
09/25/1996EP0734119A2 Attenuating circuit using a quarter-wave line (s)
09/23/1996CA2171906A1 Attenuating circuit using a quarter-wave line(s)
09/12/1996WO1996007927A3 Transconductance amplifier having a digitally variable transconductance as well as a variable gain stage and an automatic gain control circuit comprising such a variable gain stage
09/06/1996WO1996019048A3 Method and apparatus for increasing receiver immunity to interference
09/04/1996EP0730345A2 Variable gain circuit
09/04/1996CN1130448A Amplifier stage with DB-linear output voltage
09/03/1996US5553096 Method of processing an input signal
08/1996
08/29/1996WO1996026572A1 Amplifier with controllable amplification rate for amplifying electric signals in a predetermined frequency range
08/28/1996EP0729227A1 Vehicle speaker control system
08/27/1996US5550512 Method for offset voltage trim for automatic gain controls
08/27/1996US5550507 Demodulator employing cyclic switching of the gain factor of an operational amplifier between different predetermined values
08/22/1996DE19505697A1 Verstärkereinrichtung zum Verstärken elektrischer Signale in einem vorgegebenen Frequenzbereich mit steuerbarer Verstärkung Amplifier means for amplifying electrical signals in a predetermined frequency range with controllable gain
08/21/1996EP0727049A1 Transconductance amplifier having a digitally variable transconductance as well as a variable gain stage and an automatic gain control circuit comprising such a variable gain stage
08/21/1996CN1129389A A removable audio remote controller for a microphone
08/20/1996CA2110301C Detector
08/13/1996US5546050 Radio frequency bus leveling system
08/08/1996DE19603090A1 Programmable amplifier for electronic probe
08/08/1996DE19518734C1 Transimpedance amplifier circuit with controlled impedance
07/1996
07/16/1996US5537673 Car stereo having a removable panel
07/02/1996US5532649 Speaker resistance sensing and power limit setting circuit
07/02/1996US5532647 Receiver having ACG circuit
07/02/1996US5532644 Variable gain amplifying circuit
06/1996
06/25/1996US5530404 Variable gain amplifier having n parallel-connected elementary amplifiers
06/20/1996WO1996019048A2 Method and apparatus for increasing receiver immunity to interference
06/19/1996EP0716783A1 Amplifier stage with a db-linear output voltage
06/18/1996US5528532 Distortion circuits for improving distortion effects to audio data
06/18/1996US5528197 Voltage controlled amplifier
06/18/1996US5528179 Constant capacitance prgrammable transconductance input stage
06/18/1996CA2053322C Integrated circuit and gate array
06/04/1996US5523712 Resistor array circuit device and variable gain device utilizing same
05/1996
05/23/1996DE4438793A1 System for adjusting electrical signals in control equipment
05/09/1996WO1996013896A2 A gain controllable amplifier, a receiver comprising a gain-controllable amplifier, and a method of controlling signal amplitudes
04/1996
04/24/1996EP0708526A1 Voltage controlled resistor
04/10/1996EP0705497A1 Low noise oscillators and tracking filters
04/09/1996US5507023 Receiver with an AGC circuit capable of expanding a dynamic range
04/03/1996EP0704948A1 Drive circuit for semiconductor light-emitting device
04/02/1996US5504457 Pulsed power amplifier for amplifying RF signals
03/1996
03/27/1996CN1031441C Controlled-gain transistor amplifier without DC shift or signal phase reversal in load current
03/26/1996US5502771 Clock radio volume control appraratus
03/21/1996WO1996008888A1 Method and apparatus for temperature compensation in a time division multiplex receiver
03/19/1996US5500626 Independent amplifier control module
03/14/1996WO1996007927A2 Transconductance amplifier having a digitally variable transconductance as well as a variable gain stage and an automatic gain control circuit comprising such a variable gain stage
03/14/1996DE19531779A1 Volume control device for audio signal amplification
03/13/1996EP0701332A1 Variable gain circuit and radio apparatus using the same
03/06/1996EP0699359A1 Polarization current controlled electronic circuit such as an adjustable resistance, a negative resistance or a filter or similar
02/1996
02/14/1996EP0696847A2 Voltage-to-current converting circuit operating with low supply voltage
02/14/1996EP0696845A2 Variable resistor and gain control circuit and integrated circuit having the variable resistor
01/1996
01/31/1996EP0695030A1 Transconductor stage with controlled gain
01/23/1996US5486791 Programmable gain amplifier
01/16/1996US5485124 Integrated amplifier with an accurately defined gain factor
01/10/1996EP0691736A1 Control of audio effects in radio receivers
01/10/1996EP0691735A2 Amplifier arrangement and receiver circuit therefor
01/09/1996US5483200 Light-receiving and amplifying device capable of switching between gain levels at high speed and obtaining a sufficient signal-to-noise ratio over a wide range in quantity of incident light
01/02/1996US5481225 Variable gain differential amplifier circuit
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