US PATENT SUBCLASS 330 / 193
.~ From cathode
Current as of: June, 1999
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DEFINITION
Classification: 330/193
(under subclass 192) Subject matter, wherein the output signal is coupled from the cathode electrode of a vacuum tube amplifying device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
70+, for series energized vacuum tube amplifiers which may have the output coupled from the cathode of a vacuum tube amplifying device.
88+, and 91, for signal feedback coupled from the cathode particularly subclass 89 for cathode-cathode coupling of adjacent stages.
117, for unbalanced-to-balanced coupling including phase splitters having cathode coupled output.
119, for push-pull amplifiers involving coupling from the cathode.
153, for cascaded amplifiers having plural interstage couplings of different characteristics. 156, for bootstrap coupling.
168, for transformer interstage coupling from the cathode.
172+, for interstage coupling from the cathode.
250+, for semiconductor device emitter follower circuits, analogous to cathode follower circuits.
293, and 296, for series energized cascaded semiconductor amplifier devices which may have the output coupled from an emitter electrode of a transistor.
