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Class Information
Number: 330/71
Name: Amplifiers > Anode energized through discharge path of controlled vacuum tube > Plural discharge paths traversed by anode supply
Description: Subject matter wherein power supply current for one or more vacuum tube amplifying devices is supplied through at least two separate space discharge paths of at least two vacuum tubes.

Sub-classes under this class:

Class Number Class Name Patents
330/72 Amplifier devices in arms of a bridge 1

Patents under this class:

Patent Number Title Of Patent Date Issued
7511571 Single-ended screen-regulated cathode-follower output stage for high-fidelity music amplifier Mar. 31, 2009
6265938 Linear high-voltage drive stage and cathode-follower high-fidelity power amplifier implementing same Jul. 24, 2001
5859565 Cathode-follower high-fidelity power amplifier Jan. 12, 1999
4324950 Amplifier for driving electrostatic loudspeakers Apr. 13, 1982

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