US PATENT SUBCLASS 330 / 177
.~ With coupling or blocking capacitor


Current as of: June, 1999
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330 /   HD   AMPLIFIERS

157  DF  INTERSTAGE COUPLING {11}
177.~ With coupling or blocking capacitor {3}
178  DF  .~.~> With R or L in series between stages
179  DF  .~.~> L in anode or grid circuit
180  DF  .~.~> With R in anode and grid circuit (RC coupling)


DEFINITION

Classification: 330/177

(under subclass 157) Subject matter wherein any path traced in series from the output electrode of the preceding of the two cascaded amplifying devices to the input electrode of the amplifier device of the following stage contains at least one capacitor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for push-pull amplifiers with significant interstage coupling which may include a blocking capacitor in such coupling.

166, for amplifiers with interstage transformer coupling having additional reactive coupling which may be a capacitor.

185, and 186, for amplifier capacitor input coupling, generally, and to a cathode, respectively.

192, and 193, for amplifier capacitor output coupling, generally, and from a cathode, respectively.

SEE OR SEARCH CLASS 333, Wave Transmission Lines and Networks,

24+, for coupling circuits generally, see notes and search notes under subclass 24.