Inductive proximity switch

摘要

The invention relates to an inductive proximity switch having a feeler head with a feeler coil as a component of an LC oscillator circuit of a high frequency oscillator, the feeler head serving to generate a directionally oriented, alternating magnetic field, whereby the feeler coil of the feeler head is coupled with a closed circuit loop comprising an inductance and an ohmic resistance such that the oscillator is damped when the field is undisturbed and its damping is reduced when the field is disturbed by a nonmagnetic object such that an oscillation occurs.