Purpose and Uses of the Relay Board for Electronics Hobbyists and Enthusiasts
A relayboard is effectively a board containing one or more relay switches. A relay switch is often used to switch a large amount of power on for a small operating energy; or to turn specific circuits on and off within an application.
Often the relay becomes the breaker point between a low and high voltage, or a low and high current, part of an application. The most obvious version of this usage is the RCD board used to insulate your home against electrical surges. The trip switches on the board are all relays – in effect making the RCD (otherwise known as a residual current device) one of the largest and most obvious relay boards in the country. (more…)