US PATENT SUBCLASS 330 / 189
.~.~ With additional impedance connected to "P" or "S" circuits


Current as of: June, 1999
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330 /   HD   AMPLIFIERS

185  DF  INPUT NETWORKS {3}
188  DF  .~ Transformer coupled {2}
189.~.~ With additional impedance connected to "P" or "S" circuits


DEFINITION

Classification: 330/189

(under subclass 188) Subject matter wherein additional impedance which may be capacitive, inductive, or resistive is included in either the primary or secondary winding circuit of the input coupling transformer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, for interstage transformer coupling, with additional impedance in the primary or secondary winding circuit.

195+, for output transformer coupling including additional impedance in the primary or secondary winding of the transformer coupling network.