Answer:
Power supply relay coil
Step-by-step explanation:
The power supply known as ATX used in today's PCs is very complicated kind of power supply. The main objective of ATX form of the power supply is conversion of the input supply from the line into different voltages to be supplied in order to run the desktop computer's mother board.
While the AT supply that was used many years back that supplied about 120 VAC, The ATX power supply in today's world is capable of supplying power supply of about 300 W or more.
Power supply relay coil is a solitary estimation of source voltage planned by configuration to be connected to the input or coil.