US PATENT SUBCLASS 330 / 198
.~ D.C. coupled
Current as of: June, 1999
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DEFINITION
Classification: 330/198
(under subclass 192) Subject matter wherein the output coupling network has a D.C.. conductive path from the output electrode of the amplifying device to the load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9, for periodic switching for input-output comparison including drift corrected D.C. amplifiers.
10, for modulator-demodulator amplifiers for amplifying D.C.. signals.
53+, for amplifiers having distributed parameter coupling means which may have a D.C.. conductive path.
125, for plural amplifier channels involving a D.C.. and an A.C. amplifier channel.
159, for interstage D.C.. coupling to cathode.
161, for interstage D.C.. coupling to screen grid or electrode other than control grid or cathode.
163, for D.C.. interstage coupling from grid or between grid and anode.
173, for D.C.. interstage coupling from cathode.
181+, for D.C.. interstage coupling.
187, for cathode input D.C.. coupling.
191, for D.C.. input coupling.
194, for D.C.. coupling from cathode.
