(under subclass 12) Subject matter wherein the change in the reactance value of the saturable core type inductance element is controlled by circuit means which is responsive to an undesired change in frequency occurring in the tuned circuit, the circuit means thereby varying the resonant frequency of the tuned circuit a sufficient amount to compensate for the
undesired frequency shift.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16, for automatic frequency controlled tuner circuits having a reactance tuning means.
26+, for automatic frequency centering circuits which have an electromagnetic operator driving the tuning element.
SEE OR SEARCH CLASS
331, Oscillators, appropriate subclasses, particularly 36, for automatic frequency controlled oscillators which may utilize a saturable inductor.
