(under subclass 649) Subject matter including measuring or testing a circuit which contains both inductance and capacitance and is tuned to resonate at a certain frequency.
(1) Note. A resonant condition exists when an inductor and 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 nor capacitive, but acts as a large value of resistance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
633+, for distributive type parameter measuring or testing utilizing resonant frequency determination.
655, for lumped type parameter measuring or testing utilizing inductive type measurement which involves a resonant circuit.
668, 675, 682, and 708, for lumped type parameter measuring or testing which involves a resonant circuit.
