(under subclass 524) Subject matter wherein a particular circuit includes an electrical interaction between a source and an input to the system, between the output of a first electrical device and the input of another such device, or between the input of the system and the output of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329, for amplitude limiting systems with tuned circuit.
531+, for particular source of power or bias voltage with filter or rectifier.
SEE OR SEARCH CLASS
330, Amplifiers,
157+, for plural stage amplifiers with interstage coupling means, subclasses 185+ for input and subclasses 192+ for output coupling networks.
331, Oscillators, 72+, for oscillator circuits utilizing electron coupled tube means and subclasses 74+ for oscillators with particular output coupling network.
333, Wave Transmission Lines and Networks,
3, 24, 109+, 117+, and 124+ for coupling networks comprised of passive elements.
