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Class Information
Number: 330/204
Name: Amplifiers > With power or bias voltage supply > For input electrode
Description: Subject matter wherein the bias supply or isolating means is furnished to or for an input electrode of a vacuum tube amplifying device.

Sub-classes under this class:

Class Number Class Name Patents
330/205 And filamentary cathode 0

Patents under this class:

Patent Number Title Of Patent Date Issued
4458209 Adaptive power control circuit Jul. 3, 1984
4414513 Amplifier stage for pulse-width-modulated signals Nov. 8, 1983

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