Process for demagnetizing components by alternating magnetic fields of varying intensity
OwnerErich Steingroever, Dietrich Steingroeverinventors
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Abstract
A process for demagnetizing components by subjecting them to the influences of the alternating magnetic field of a coil supplied by an oscillator circuit which includes a capacitor also includes providing a voltage supply to the oscillator at the resonant frequency and thereafter reducing the intensity of the alternating field acting on the components. This can be done in several ways, such as by varying the frequency of the supply voltage or by varying the capacitance connected in circuit with the coil. The process may also be used for calibrating permanent magnets.
Claims26
In a process for the demagnetization of components subjected to the influence of an alternating magnetic field of a coil connected with capacitor means in an oscillator circuit supplied by an alternating voltage means, comprising the steps of:
- (a) placing a component to be demagnetized in the vicinity of said coil to be subjected to an alternating magnetic field generated by said coil;
- (b) varying the phase between voltage and current of the oscillator circuit to produce a control voltage to bring the frequency of the supplied voltage from a non-resonant frequency to the resonant frequency of the oscillator circuit, and;
- (c) thereafter reducing the intensity of the alternating magnetic field to which said component is subjected.
Dependencies are inferred from the claim text.