How Computers Work – Part 1 – The Power Supply [Mega Series]
How the Power Supply Works
The computer needs a type of adapter that will convert this current from AC to direct current (DC) – a feasible type of electrical supply for the motherboard and components attached to it. Here comes the power supply to the rescue. This simple box converts the evil AC to good, holy and pure DC, which is then distributed to each individual component on the computer that requires it. Although the motherboard gets a nice fat slice of the juice, smaller cables from the power supply also lead to the hard drives, certain expansion cards, and your tongue, if you have the ambition for that.