Inductive proximity switch for use as non-contact electronic switch in automation control technology, has Schmitt trigger that converts analog control signal into pulse-width modulated signal, so that received signal is regulated

摘要

The switch (1) has transmitting coil (2) anti-serially connected with receiving coils (3) for generating a reception signal. A matching coil (4) has resistor (Re) and controllable resistor (10) that forms a control loop. A Schmitt trigger (9) converts the analog control signal into pulse-width modulated signal, so that the received signal is regulated from average level to zero when the switch is actuated. An independent claim is included for method for operating inductive proximity switch.