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Class Information
Number: 330/72
Name: Amplifiers > Anode energized through discharge path of controlled vacuum tube > Plural discharge paths traversed by anode supply > Amplifier devices in arms of a bridge
Description: Subject matter including two pairs of series energized tubes wherein one tube of each pair is supplied through its space discharge path with anode-cathode power supply current from the power supply source, and wherein each of the four vacuum tubes is arranged in the arms of a Wheatstone bridge.

Patents under this class:

Patent Number Title Of Patent Date Issued
7774509 Command conversion device and charging device for content reproduction device Aug. 10, 2010

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