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Class Information
Number: 330/273
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having particular biasing arrangement
Description: Subject matter with specific details or distinctive characteristics of the biasing means applied to the amplifying device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7030695 |
Low threshold voltage circuit employing a high threshold voltage output stage |
Apr. 18, 2006 |
| 7026865 |
Analogue amplifier with multiplexing capability |
Apr. 11, 2006 |
| 7012467 |
Apparatus and method for compensating operating current in an amplifier when supply voltage varies |
Mar. 14, 2006 |
| 6897729 |
Self-calibrating gain control circuit for low noise amplifier |
May. 24, 2005 |
| 6842525 |
Signal amplification circuit and process for neutralizing noise from a power supply voltage |
Jan. 11, 2005 |
| 6784738 |
Method and apparatus for gain control in a CMOS low noise amplifier |
Aug. 31, 2004 |
| 6630865 |
Push-pull amplifiers |
Oct. 7, 2003 |
| 6600371 |
Low noise amplifier |
Jul. 29, 2003 |
| 6556084 |
Linearized class C amplifier with dynamic biasing |
Apr. 29, 2003 |
| 6445244 |
Current measuring methods |
Sep. 3, 2002 |
| 6417733 |
High output voltage swing class AB operational amplifier output stage |
Jul. 9, 2002 |
| 6369653 |
Apparatus and methods for improved control of quiescent state of output transistors in a class AB amplifier |
Apr. 9, 2002 |
| 6300837 |
Dynamic bias boosting circuit for a power amplifier |
Oct. 9, 2001 |
| 6294945 |
System and method for compensating the dielectric absorption of a capacitor using the dielectric absorption of another capacitor |
Sep. 25, 2001 |
| 6292057 |
Output stage of an operational amplifier and method having a latchup-free sourcing current booster for driving low impedance loads |
Sep. 18, 2001 |
| 6275108 |
Circuit and method for control of amplifier operating angle |
Aug. 14, 2001 |
| 6268771 |
Amplifying device |
Jul. 31, 2001 |
| 6222417 |
Amplifier output stage provided with a parasitic-current limiter |
Apr. 24, 2001 |
| 6215356 |
Power amplifier arrangement |
Apr. 10, 2001 |
| 6160441 |
Sensors for measuring current passing through a load |
Dec. 12, 2000 |
| 5963093 |
Class AB output stage wih reduced distortion |
Oct. 5, 1999 |
| 5952881 |
Power stage, particularly for an operational amplifier |
Sep. 14, 1999 |
| 5913181 |
Circuit for providing a switch signal to trigger changer in a digital potentiometer |
Jun. 15, 1999 |
| 5889433 |
Amplifier having a high current efficiency |
Mar. 30, 1999 |
| 5874858 |
Amplifier system having a constant current regulating unit |
Feb. 23, 1999 |
| 5834977 |
Amplifying circuit with power supply switching circuit |
Nov. 10, 1998 |
| 5764464 |
Low input bias current circuit |
Jun. 9, 1998 |
| 5764105 |
Push-pull output circuit method |
Jun. 9, 1998 |
| 5708393 |
High voltage operational amplifier output stage |
Jan. 13, 1998 |
| 5684432 |
Amplifier output stage having enhanced drive capability |
Nov. 4, 1997 |
| 5508658 |
Power amplifier circuit for audio signal and audio device using the same |
Apr. 16, 1996 |
| 5500625 |
Controlled current output stage amplifier circuit and method |
Mar. 19, 1996 |
| 5483197 |
Power amplifier circuit for audio signal and audio device using the same |
Jan. 9, 1996 |
| 5479134 |
Power amplifier circuit for audio signal and audio device using the same |
Dec. 26, 1995 |
| 5450036 |
Power amplifier circuit for audio signal and audio device using the same |
Sep. 12, 1995 |
| 5424684 |
Power amplifier circuit for audio signal and audio device using the same |
Jun. 13, 1995 |
| 5389894 |
Power amplifier having high output voltage swing and high output drive current |
Feb. 14, 1995 |
| 5357213 |
High-frequency wide band amplifier having reduced impedance |
Oct. 18, 1994 |
| 5285170 |
Operational amplifier with all NPN transistor output stage |
Feb. 8, 1994 |
| 5166636 |
Dynamic biasing for class A amplifier |
Nov. 24, 1992 |
| 5081426 |
Power amplifier having a standby circuit |
Jan. 14, 1992 |
| 5059923 |
Fractional load current detector |
Oct. 22, 1991 |
| 5021746 |
Amplifier output stage |
Jun. 4, 1991 |
| 5019789 |
Adaptive bias circuit for preventing turnoff in a push-pull stage |
May. 28, 1991 |
| 4922208 |
Output stage for an operational amplifier |
May. 1, 1990 |
| 4918400 |
Amplifier circuit |
Apr. 17, 1990 |
| 4871977 |
Monolithic integrated wideband power amplifier |
Oct. 3, 1989 |
| 4853645 |
Amplifier arrangement with quiescent current control |
Aug. 1, 1989 |
| 4853648 |
Power amplifier circuit with a stand-by state |
Aug. 1, 1989 |
| 4799027 |
Low-frequency amplifier |
Jan. 17, 1989 |
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