US PATENT SUBCLASS 322 / 78-- .~.~.~.~ Tuned or resonant

US PATENT SUBCLASS 322 / 78
.~.~.~.~ Tuned or resonant

Current as of: June, 1999
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322 /	HD	ELECTRICITY: SINGLE GENERATOR SYSTEMS

44	DF	GENERATOR CONTROL {11}
59	DF	.~ With excitation winding and/or circuit control {11}
75	DF	.~.~ Control by circuit impedance {3}
76	DF	.~.~.~ Plural impedances {2}
78		.~.~.~.~ Tuned or resonant

DEFINITION

Classification: 322/78

(under subclass 76) Subject matter wherein the plural impedances in the excitation circuit make up a tuned or resonant circuit. Such circuit must include both capacitance and inductance.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

175+, for wave filters of the resonant, discrete frequency selective type, and subclasses 219+ for resonators of the distributed parameter type.

334, Tuners, appropriate subclass for tuned networks for use in wave energy apparatus and comprising inductance and capacitance elements in circuit arrangement to form a resonant circuit and in which structure is provided for adjusting one or both of these elements for changing the mean resonant frequency of the circuit.