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Class Information
Number: 330/123
Name: Amplifiers > Including a push-pull stage > Power or bias supply circuits and control thereof
Description: Subject matter including means to control the power supply and/or bias voltage supply applied to the electrodes of the amplifying devices; and/or subject matter under subclass 118 involving specific details or distinctive characteristics of the power or bias voltage supply of the amplifying devices.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6970152 |
Stacked amplifier arrangement for graphics displays |
Nov. 29, 2005 |
| 6759901 |
Dynamic sensing regulator |
Jul. 6, 2004 |
| 6703080 |
Method and apparatus for VHF plasma processing with load mismatch reliability and stability |
Mar. 9, 2004 |
| 6683496 |
System and method for minimizing dissipation in RF power amplifiers |
Jan. 27, 2004 |
| 5909145 |
Variable control of electronic power supplies |
Jun. 1, 1999 |
| 5793252 |
Power amplifier with switchable voicing elements |
Aug. 11, 1998 |
| 5635872 |
Variable control of electronic power supplies |
Jun. 3, 1997 |
| 5559469 |
Vacuum tube amplifier with selectable power devices |
Sep. 24, 1996 |
| 5550509 |
Output power selection apparatus for a tube-type audio amplifier |
Aug. 27, 1996 |
| 5546046 |
Output tube bias selection apparatus for tone alteration in a tube-type audio amplifier |
Aug. 13, 1996 |
| 5170495 |
Controlling clipping in a microwave power amplifier |
Dec. 8, 1992 |
| 5022305 |
Tube overdrive pedal operable using low voltage DC battery eliminator |
Jun. 11, 1991 |
| 4719431 |
Audio power amplifier |
Jan. 12, 1988 |
| 4636740 |
Control circuit for varying power output of push-pull tube amplifiers |
Jan. 13, 1987 |
| 4593251 |
Power amplifier capable of simultaneous operation in two classes |
Jun. 3, 1986 |
| 4532476 |
Power amplifier capable of simultaneous operation in two classes |
Jul. 30, 1985 |
| 4449103 |
High power class B modulation amplifier for a broadcast transmitter |
May. 15, 1984 |
| 4353036 |
Field effect transistor amplifier with variable gain control |
Oct. 5, 1982 |
| 3995226 |
Audio amplifier |
Nov. 30, 1976 |
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