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Class Information
Number: 330/271
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having signal feedback means
Description: Subject matter wherein a portion of the electrical signal output energy is applied to the input of the amplifier.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7298211 |
Power amplifying apparatus |
Nov. 20, 2007 |
| 7242250 |
Power amplifier |
Jul. 10, 2007 |
| 6925106 |
Predistortion type distortion compensation apparatus |
Aug. 2, 2005 |
| 6838940 |
High frequency power amplifier circuit |
Jan. 4, 2005 |
| 6828857 |
High gain, high bandwidth CMOS transimpedance amplifier |
Dec. 7, 2004 |
| 6753726 |
Apparatus and method for an offset-correcting sense amplifier |
Jun. 22, 2004 |
| 6737924 |
Differential, double feedback CMOS transimpedance amplifier with noise tolerance |
May. 18, 2004 |
| 6630866 |
High beta output stage for high speed operational amplifier |
Oct. 7, 2003 |
| 6630865 |
Push-pull amplifiers |
Oct. 7, 2003 |
| 6603352 |
Switched-mode power amplifier integrally performing power combining |
Aug. 5, 2003 |
| 6603347 |
Amplifier having controllable input impedance |
Aug. 5, 2003 |
| 6600371 |
Low noise amplifier |
Jul. 29, 2003 |
| 6593811 |
Nonlinear feedback linearizer |
Jul. 15, 2003 |
| 6593813 |
Negative feed-back amplifier and method for negative feed-back |
Jul. 15, 2003 |
| 6501252 |
Power supply circuit |
Dec. 31, 2002 |
| 6144256 |
Wide bandwidth, current sharing, Mosfet audio power amplifier with multiple feedback loops |
Nov. 7, 2000 |
| 6137273 |
Circuit for supplying a high precision current to an external element |
Oct. 24, 2000 |
| 6011438 |
Push-pull wideband semiconductor amplifier |
Jan. 4, 2000 |
| 5977571 |
Low loss connecting arrangement for photodiodes |
Nov. 2, 1999 |
| 5973564 |
Operational amplifier push-pull output stage with low quiescent current |
Oct. 26, 1999 |
| 5781072 |
Dual push-pull amplifier circuit and method |
Jul. 14, 1998 |
| 5770974 |
Thermal compensation circuit affecting amplifier gain |
Jun. 23, 1998 |
| 5742205 |
Field effect transistor cable television line amplifier |
Apr. 21, 1998 |
| 5734287 |
Control of distortion in a line-powered amplifier with a rail-to-rail output voltage swing |
Mar. 31, 1998 |
| 5708393 |
High voltage operational amplifier output stage |
Jan. 13, 1998 |
| 5387878 |
Amplification circuit |
Feb. 7, 1995 |
| 5376900 |
Push-pull output stage for amplifier in integrated circuit form |
Dec. 27, 1994 |
| 5202646 |
Output stage for amplifiers |
Apr. 13, 1993 |
| 4940949 |
High efficiency high isolation amplifier |
Jul. 10, 1990 |
| 4918400 |
Amplifier circuit |
Apr. 17, 1990 |
| 4764735 |
Push-pull transformer feed-back amplifier |
Aug. 16, 1988 |
| 4731589 |
Constant current load and level shifter circuitry |
Mar. 15, 1988 |
| 4723111 |
Amplifier arrangement |
Feb. 2, 1988 |
| 4706038 |
Wideband linear Darlington cascode amplifier |
Nov. 10, 1987 |
| 4647866 |
Audio amplifier output stage |
Mar. 3, 1987 |
| 4583529 |
High efficiency high frequency power oscillator |
Apr. 22, 1986 |
| 4538116 |
Output stage for an operational amplifier |
Aug. 27, 1985 |
| 4481480 |
Feedback amplifier having a voltage-controlled compensation circuit |
Nov. 6, 1984 |
| 4467288 |
Distortion-free complemented error feedback amplifier and method |
Aug. 21, 1984 |
| 4415865 |
Circuit arrangement for controlling the quiescent current in a class AB amplifier stage |
Nov. 15, 1983 |
| 4405902 |
Push-pull output stage |
Sep. 20, 1983 |
| 4330755 |
Power-amplifying circuit |
May. 18, 1982 |
| 4220930 |
Quasi-linear amplifier with feedback-controlled idling currents |
Sep. 2, 1980 |
| 4205274 |
Power amplifier circuit |
May. 27, 1980 |
| 4187472 |
Amplifier employing matched transistors to provide linear current feedback |
Feb. 5, 1980 |
| 4180782 |
Phantom full-bridge amplifier |
Dec. 25, 1979 |
| 4145666 |
Multistage amplifier circuit |
Mar. 20, 1979 |
| 4085382 |
Class B amplifier |
Apr. 18, 1978 |
| 4045745 |
Low-frequency power amplifier |
Aug. 30, 1977 |
| 4041408 |
Push-pull audio amplifier system with muting |
Aug. 9, 1977 |
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