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Class Information
Number: 330/125
Name: Amplifiers > With plural amplifier channels (e.g., parallel amplifier channels) > D.c. and a.c. amplifier channels
Description: Subject matter wherein at least one of the signal channels has a D.C. conductive path from source to load, or where branched channels are involved, from or to the common junction point of the channels to the separate loads or from the separate sources or between common junction points in parallel channels; and at least one other channel has its signal transmission path, as set forth above, involves coupling circuits which will conduct only A.C. signals, because of signal coupling by a series condenser or transformer, and which will not conduct D.C. in that signal channel circuit.

Patents under this class:

Patent Number Title Of Patent Date Issued
8600442 Power recovery circuit based on partial standing waves Dec. 3, 2013
8189713 Matrix power amplifiers for high speed wireless applications May. 29, 2012
7734263 Transmission circuit and communication device Jun. 8, 2010
7576611 Systems and methods for high frequency electronic power conversion and amplification Aug. 18, 2009
7233174 Dual polarity, high input voltage swing comparator using MOS input transistors Jun. 19, 2007
5751191 Reproducing signal amplifier and central value signal generator May. 12, 1998
5103110 Programmable power supply Apr. 7, 1992
4833400 High frequency multi-range attenuator having a high input impedance May. 23, 1989
4525688 Oscilloscope signal input circuit including an attenuator Jun. 25, 1985
4051363 Split-path receiver for fiber optics application Sep. 27, 1977

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