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Class Information
Number: 330/108
Name: Amplifiers > Signal feedback > Potentiometer common to signal and feedback path
Description: Subject matter wherein the signal transmission path and the "signal feedback circuit means" both include a potentiometer or a part thereof in common.










Patents under this class:

Patent Number Title Of Patent Date Issued
8063697 Self-oscillating driver circuit Nov. 22, 2011
5705951 Method for correction of error signals in a signal amplification system and an apparatus used for that purpose Jan. 6, 1998
5371472 Charge amplifier for sensors outputting electrical charge Dec. 6, 1994
5081410 Band-gap reference Jan. 14, 1992
4791381 Integrated amplifier circuit Dec. 13, 1988
4716378 Amplifier circuit Dec. 29, 1987
4633189 NF tone control circuit Dec. 30, 1986
4543536 Charge amplifier with automatic zero Sep. 24, 1985
4502020 Settling time reduction in wide-band direct-coupled transistor amplifiers Feb. 26, 1985
4387345 Precision gain AC coupled operational amplifier Jun. 7, 1983
4354163 High voltage buffer amplifier Oct. 12, 1982
4340865 Electric amplifier circuits that respond to an input signal of either polarity to produce an output signal having a polarity corresponding to that of the input signal Jul. 20, 1982
4322681 Module for analyzing and linearizing of electrical signals from unknown systems and method for using it Mar. 30, 1982
4268760 Amplitude-limiter May. 19, 1981
4193040 High-voltage amplifier with low output impedance Mar. 11, 1980
4156853 Active filter for providing improved notch and band pass filters May. 29, 1979
4152659 Low noise differential amplifier May. 1, 1979
4151478 Nonlinearly variable gain apparatus Apr. 24, 1979
4107622 Tone controller Aug. 15, 1978
4107618 Amplifier system having signal gain independent of a reference voltage Aug. 15, 1978
4099134 Amplifier with controllable transmission factor and switchable control characteristic Jul. 4, 1978
4092494 Loud-speaker enclosure with electrical feed-back May. 30, 1978
4091333 Transconductance amplifier circuit May. 23, 1978
4087758 Reference voltage source circuit May. 2, 1978
4079331 Amplifier system with special feedback circuits Mar. 14, 1978
4078215 Electronic filter circuit Mar. 7, 1978
4055813 Single adjustment multiple function calibration circuit Oct. 25, 1977
4037170 Difference amplifier having extended common mode range Jul. 19, 1977
3983504 Active filter Sep. 28, 1976
3980942 Apparatus for the control of electrical heating of a semiconductor rod Sep. 14, 1976
3972006 Bandpass filter Jul. 27, 1976
3939433 Feedback circuit Feb. 17, 1976











 
 
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