US PATENT SUBCLASS 324 / 708
.~.~.~.~ Including a tuned or resonant circuit

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
649  DF  .~ Lumped type parameters {6}
691  DF  .~.~ Using resistance or conductance measurement {12}
707  DF  .~.~.~ With frequency response, change or processing circuit {1}
708.~.~.~.~ Including a tuned or resonant circuit

DEFINITION

Classification: 324/708

Including a tuned or resonant circuit:

(under subclass 707) Subject matter including a circuit which typically contains both inductance and capacitance and is tuned to resonate at a certain frequency.

(1) Note. A resonant condition exists when an inductor and a capacitor store energy and pass the same energy back and forth. The rate at which this occurs is called the resonant frequency. At the resonant frequency the circuit is neither inductive or capacitive, but acts as a large valve of resistance.

SEE OR SEARCH THIS CLASS, SUBCLASS:

652, for lumped type parameter measuring or testing by utilizing reactance or susceptance measurement which involves a resonant circuit.

655, 668, 675, and 682, for lumped type parameter measuring or testing which involves a resonant circuit.