Auxiliary Relay is a simple device to assist the functionality of any other device. Primarily the function of the unit is to help the operating circuit when it’s open or closed. Nowadays, most electrical equipment has an Auxiliary relay for smooth free – completed, and terminated functionality. It does not permit power to flow through it.
One of the purest examples of auxiliary rays’ functioning is the opening and closing of the switch. When you press a fan switch in your room, the signal travels to the fan to rotate. When you put the switch off, the fan turns off. The switch here acts as an auxiliary relay.
Similarly, a light bulb also has a switch that acts as an auxiliary bulb.
A telephone also has an auxiliary relay. When someone calls, you hear the ringtone. The small device performing that signal transmission of a call is an auxiliary relay.
Computers also have a relay option. When the switch is turned on, the signal goes to primary circuits to turn on the CPU and attached devices; while switching off, the signal is inhibited, and the electrical supply to the computer is disrupted, and it turns off.
Automobiles also operate on the auxiliary relay. On turning the key in the ignition, the car’s electrical system signals to start the radio, Air conditioner, and other components. Thus, the auxiliary relay is in practice everywhere.
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