.~ Space discharge or unilaterally conductive device in output network {1}
76
.~.~ Harmonic producing or selecting network
DEFINITION
Classification: 331/76
(under subclass 75) Subject matter wherein (1) the active element is operated on a nonlinear portion of its characteristic so as to produce harmonics of the fundamental frequency of the oscillator, further filter means usually being provided to select a particular harmonic or harmonics of the harmonics generated, or (2) a wave filter selective to the desired harmonic or harmonics of the harmonics generated by the oscillator is included in the output coupling network.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51, for frequency dividing plural oscillator systems, wherein the oscillators are connected in cascade or series.
53, for frequency multiplying plural oscillator systems, wherein the oscillators are connected in cascade or series.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
105, for miscellaneous systems employing harmonic filtering or neutralizing devices and not elsewhere classifiable. 333, Wave Transmission Lines and Networks,
167+, for passive wave filters, especially subclasses 175+ for resonant discrete frequency selective type filters.
363, Electric Power Conversion Systems,
157+, for frequency conversion systems, for directly converting a current into a current of a higher or lower frequency, especially subclasses 166+ for electronic tube frequency converting systems.
