(under subclass 50) Cascaded oscillators wherein at least one succeeding oscillator generates oscillations of a frequency that is subharmonically related to the frequency of the oscillations generated by a preceding oscillator of the cascade.
SEE OR SEARCH CLASS
363, Electric Power Conversion Systems,
157+, for frequency conversion systems in general, wherein an input alternating current of one frequency is converted directly into an output alternating current of a different frequency. The output frequency may be either less or greater than this input frequency.
