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Class Information
Number: 330/195
Name: Amplifiers > Output networks > Transformer coupled
Description: Subject matter in which the output circuit network includes a transformer for coupling the signal from the amplifier device to the load.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7397305 |
High output power amplifier with adjustable voltage transformation ratio of transformer |
Jul. 8, 2008 |
| 7365602 |
Multilevel power amplifier architecture using multi-tap transformer |
Apr. 29, 2008 |
| 7348845 |
System and method for employing variable magnetic flux bias in an amplifier |
Mar. 25, 2008 |
| 7288989 |
Low-noise amplifier with a transformer |
Oct. 30, 2007 |
| 7224231 |
Method for transforming output signals of a low-noise amplifier of a wireless transceiver |
May. 29, 2007 |
| 7210162 |
DVB-ASI signal inverting adapter and system |
Apr. 24, 2007 |
| 7129784 |
Multilevel power amplifier architecture using multi-tap transformer |
Oct. 31, 2006 |
| 7113056 |
Radial power divider/combiner |
Sep. 26, 2006 |
| 6992543 |
Mems-tuned high power, high efficiency, wide bandwidth power amplifier |
Jan. 31, 2006 |
| 6867646 |
Demodulation apparatus for digital audio amplifier |
Mar. 15, 2005 |
| 6754338 |
Bidirectional loss/slope equalizer arrangement |
Jun. 22, 2004 |
| 6737916 |
RF amplifier system having improved power supply |
May. 18, 2004 |
| 6639467 |
Alternating current derived from direct current |
Oct. 28, 2003 |
| 6566947 |
Combined active impedance and filter in line drivers |
May. 20, 2003 |
| 6300828 |
Switchless high efficiency amplifier |
Oct. 9, 2001 |
| 6229396 |
Controlled impedance transformer line driver |
May. 8, 2001 |
| 6175271 |
Output signal converter for tube amplifiers |
Jan. 16, 2001 |
| 5541482 |
Electrodeless discharge lamp including impedance matching and filter network |
Jul. 30, 1996 |
| 5091703 |
Analog line connection |
Feb. 25, 1992 |
| 5077756 |
Data network line driver |
Dec. 31, 1991 |
| 5049837 |
Push-pull transformer coupled RF amplifier with response to DC |
Sep. 17, 1991 |
| 4829273 |
Surface acoustic wave filter |
May. 9, 1989 |
| 4774477 |
Power amplifier having low intermodulation distortion |
Sep. 27, 1988 |
| 4772870 |
Power line communication system |
Sep. 20, 1988 |
| 4633191 |
Transformer isolated high voltage, high power amplifier system |
Dec. 30, 1986 |
| 4614914 |
Low-distortion transformer-coupled circuit |
Sep. 30, 1986 |
| 4606046 |
Converter/line driver circuit for a line repeater |
Aug. 12, 1986 |
| 4208633 |
Current supply branching arrangement for separation of signal and supply currents |
Jun. 17, 1980 |
| 4180782 |
Phantom full-bridge amplifier |
Dec. 25, 1979 |
| 4047120 |
Transient suppression circuit for push-pull switching amplifiers |
Sep. 6, 1977 |
| 4027269 |
Audio line driver amplifier |
May. 31, 1977 |
| 4005372 |
Frequency tunable microwave apparatus having a variable impedance hybrid idler circuit |
Jan. 25, 1977 |
| 3997852 |
RF amplifier |
Dec. 14, 1976 |
| 3952256 |
Multi-impedance output for transistor power amplifier |
Apr. 20, 1976 |
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