.~> With condition-responsive inductor or capacitor
DEFINITION
Classification: 334/5
(under the class definition) Subject matter including a tuner, which has at least one variable element that is mechanically variable, linked with actuating structure which senses and responds significantly well to a particular stimulus or condition which is external of the electrical circuit or a change in such external stimulus or condition to thereby cause the variable element to change, adjust or correct the resonant frequency of the tuned circuit; or including a tuner which has at least one variable element which is nonmechanically variable and which has the property, as by chemical composition, of changing its reactance value in response to a particular stimulus or condition which is external of the electrical circuit or a change in such external stimulus or condition to thereby cause a change, adjustment or correction in the resonant frequency of the tuned circuit.
(1) Note. For classification here the actuator must be
something more than merely adapted to have a force applied thereto for the actuation of the mechanical variable or adjustable tuner, as a knob, pedal or handle. The actuator must sense the condition or change in condition, and respond in some manner as by moving or deforming.
(2) Note. The tuner element that is affected by the particular external stimulus does not necessarily have to detune the tuner from a particular resonant frequency upon sensing the external stimulus but may adjust or correct the tuned circuit to prevent undesired drifting or change in the resonant frequency of the tuned circuit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4, for tuners which are responsive to and varied by a magnetic field applied to the tuned circuit or some element thereof.
11, for tuners having a capacitor which is responsive to voltage or current variations within the electrical circuit. 12+, for tuners having a saturable core type inductor which is responsive to voltage or current variations within the electrical circuit.
SEE OR SEARCH CLASS
331, Oscillators,
175+, for oscillators combined with frequency stabilizing means.
336, Inductor Devices,
30, for inductors with condition responsive adjustment means.
338, Electrical Resistors,
13+, for resistors that are responsive to a condition.
