A switch that can be operated electrically is known as a relay. It consists of several operating contact terminals as well as a group of input terminals for multiple or single control signals. The switch might come with a different number of cont

A counter or a tachometer is an instrument that helps in measuring the speed of rotation of a disk or shaft, like that present i

The word solenoids got its birth from the Greek word “solen” which signifies a pipe or a channel. The second part of the name is coined from “edios” which is also a Greek word signifying an outline. Basically, it's an elec