US PATENT SUBCLASS 330 / 187
.~.~ D.C. coupled

Current as of: June, 1999
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330 /   HD   AMPLIFIERS

185  DF  INPUT NETWORKS {3}
186  DF  .~ To cathode {1}
187.~.~ D.C. coupled

DEFINITION

Classification: 330/187

(under subclass 186) Subject matter wherein the input coupling network has a D.C.. conductive path from the source of signal energy to the cathode input electrode of the amplifying device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

159, for D.C.. interstage coupling to the cathode of a vacuum tube amplifying device.