(under subclass 177) Oscillators in which the variable frequency controlling element consists of an inductance device provided with means to vary the effective inductance of the device. By way of examples, the inductance device may have a core of variable permeability, means being provided to vary the permeability of the core and hence the inductance of the device, or the device may comprise a metallic member of magnetic or nonmagnetic material movable within the magnetic field of an inductance coil to vary the inductance thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36, for automatic frequency stabilized oscillator utilizing a particular frequency controlling reactance device (e.g., saturable inductor).
SEE OR SEARCH CLASS
323, Electricity: Power Supply or Regulation Systems, appropriate subclasses, for voltage magnitude and phase control systems in general utilizing adjustable or variable inductance devices.
336, Inductor Devices, appropriate subclasses, for the structure for inductors of the adjustable or variable inductance type.
