US PATENT SUBCLASS 330 / 186
.~ To cathode
Current as of: June, 1999
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DEFINITION
Classification: 330/186
(under subclass 185) Subject matter wherein the input signal is coupled to the cathode of a vacuum tube amplifying device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88+, and 91+, for signal feedback to a cathode circuit, particularly subclass 89 for cathode-cathode coupling between adjacent stages.
119, for push-pull amplifiers involving coupling to the cathode.
156, involving coupling directly between cathode and grid.
158+, for interstage coupling to the cathode. 250+, for subject matter including semiconductor device input coupling to emitter, which may be the dual or analogue of an input coupling circuit to the cathode electrode of a vacuum tube amplifying device.
