Fact of the Day

In 1827, Georg Ohm defined an empirical relationship between the current flowing through a wire and the voltage potential required to drive that current
Ohm's law, states that the potential difference between two points along a connected path and the current flowing through it are proportional at a given (i.e., fixed) temperature:

Basics of Relay Logic

Fundamentals of a Relay

Description of a Relay and the important specifications