| |
 |
|
Class Information
Number: 330/199
Name: Amplifiers > With power or bias voltage supply
Description: Subject matter in which the "source of electrical energy" controlled by the signal input; or biasing means applied to the "amplifying device", or the means to apply such energy or bias, such as the circuits through which such source or bias is applied; or means for isolating such source or biasing means from the signal path or other amplifier circuits (by filters, isolating resistors, or other means), is significantly claimed, and which subject matter is not provided for in any of the previous subclasses.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7395038 |
High-efficiency modulating RF amplifier |
Jul. 1, 2008 |
| 7158646 |
Signal derived bias supply for electrostatic loudspeakers |
Jan. 2, 2007 |
| 7136058 |
Display apparatus, digital-to-analog conversion circuit and digital-to-analog conversion method |
Nov. 14, 2006 |
| 7099635 |
High-efficiency modulating RF amplifier |
Aug. 29, 2006 |
| 6970152 |
Stacked amplifier arrangement for graphics displays |
Nov. 29, 2005 |
| 6917245 |
Absolute power detector |
Jul. 12, 2005 |
| 6819226 |
Systems and methods for energy storage in land-based telemetry applications |
Nov. 16, 2004 |
| 6756849 |
Absolute power detector |
Jun. 29, 2004 |
| 6703080 |
Method and apparatus for VHF plasma processing with load mismatch reliability and stability |
Mar. 9, 2004 |
| 6687490 |
Transmission apparatus and method for a mobile communication terminal |
Feb. 3, 2004 |
| 6628791 |
Signal derived bias supply for electrostatic loudspeakers |
Sep. 30, 2003 |
| 6587511 |
Radio frequency transmitter and methods thereof |
Jul. 1, 2003 |
| 6366177 |
High-efficiency power modulators |
Apr. 2, 2002 |
| 6256482 |
Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters |
Jul. 3, 2001 |
| 6181796 |
Method and system which drives left, right, and subwoofer transducers with multichannel amplifier having reduced power supply requirements |
Jan. 30, 2001 |
| 4633190 |
Voltage and current source fluctuation compensator and method |
Dec. 30, 1986 |
| 4563660 |
Noise isolation system for high-speed circuits |
Jan. 7, 1986 |
| 4511856 |
Bootstrap power regulator for systems such as analog to digital converters |
Apr. 16, 1985 |
| 4210996 |
Trimming method for resistance value of polycrystalline silicon resistors especially used as semiconductor integrated circuit resistors |
Jul. 8, 1980 |
| 4189680 |
Isolated signal conditioner |
Feb. 19, 1980 |
| 4170761 |
Remotely powered intermediate amplifier for communications transmission |
Oct. 9, 1979 |
| 4166983 |
Circuit for limiting the output voltage of an amplifier |
Sep. 4, 1979 |
| 4158179 |
Amplifier circuit |
Jun. 12, 1979 |
| 4117418 |
Electric amplifier |
Sep. 26, 1978 |
| 4092608 |
Electronic circuitry |
May. 30, 1978 |
| 4092609 |
Circuit for reducing ripple voltage |
May. 30, 1978 |
| 4085381 |
Amplifiers |
Apr. 18, 1978 |
| 4066974 |
Isolation amplifier |
Jan. 3, 1978 |
| 4063185 |
Direct coupling type power amplifier circuit |
Dec. 13, 1977 |
| 4058776 |
Bias circuit for avalanche diodes |
Nov. 15, 1977 |
| 4031480 |
Circuit arrangement for the ungrounded transmission of signals through testing points in communication systems |
Jun. 21, 1977 |
| 3988690 |
Amplifier circuit having a floating input stage |
Oct. 26, 1976 |
|
|
|
