PL-05N NPN normally open DC for inductive proximity switches 10-36VDC

Working principle:

Proximity switch consists of three main components: oscillators, switch circuits, amplifier output circuit. Oscillator producing an alternating magnetic field. When a metal object close to the magnetic field, and the sensing distance is reached, eddy currents in the metal, resulting in vibration attenuation, and oscillation. Oscillator, oscillator and oscillator stage amplifier circuit after changes are processed and converted into a switching signal, triggering control devices, so as to achieve non-contact detection purposes. Target off sensor nearer, nearer the target from the sensor, the larger the damping in a coil; damping larger smaller the sensor oscillator current. current loss of inductive proximity switch, as metal distance decreases.

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