Matching a sensor interface with a programmable logic converter or controller hardware that can accept only one type of input—npn or pnp—can be difficult. The last-stage modification circuit described ...

Recently I came across some non-contact liquid level sensors and gathered them out of curiosity. They have been available in the market for the past few years, but this time I was lucky enough to get ...

Dc photoelectric sensors detect the presence or absence of light. When outputs turn on, power flows through the load. When turned off, the load receives no power. The remaining two modes of operation ...