(under subclass 132) Oscillators wherein the negative resistance device relies on the phenomenon of secondary emission to produce the negative resistance effect. Usually the negative resistance device is of the dynatron type wherein the screen grid of a tetrode is biased more positively than the anode thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, for magnetron oscillators with a secondary emissive electrode.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices,
103+, for the structure of secondary emitter type discharge devices. 329, Demodulators, particularly
368, for an amplitude demodulator using an electron discharge device having three or more electrodes.
