US PATENT SUBCLASS 331 / 134
.~ Transitron type


Current as of: June, 1999
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331 /   HD   OSCILLATORS

132  DF  NEGATIVE RESISTANCE OR NEGATIVE TRANSCONDUCTANCE OSCILLATOR {2}
134.~ Transitron type


DEFINITION

Classification: 331/134

(under subclass 132) Oscillators wherein the negative resistance device comprises a multigrid tube employing a retarding field to produce negative transconductance between two grids of the tube, which grids are usually coupled by a capacitor or a bias source.