All electronic devices require DC power to operate.
Many, who have assembled a modern PC are aware of the component diversity found within. Circuit topology identified by names such as TTL and CMOS, are implemented as parts of circuit function blocks such as CPUs, ROMs, RAMs, EEPROMs, and Hard Drives. Each circuit is known to have its particular voltage demands from the power supply. As well each of these circuit blocks may have its own DC-DC converter to make certain that not only does it receive proper voltage, but also to ensure that this voltage is maintained within close tolerances. Deviation from the nominal voltage may result in damage to the circuit or the loss of proper function causing data corruption. Typically these DC-DC converters are of the small step down mono blocks, which plug into a circuit board and supply a defined local circuit. Levels of power normally available from such DC-DC converters are in the 2 to 10 Watt range and their output voltages may have standard values specified by the manufacturers of the types of integrated circuits they are intended to energize. DC voltages of 3.3V, 5V, 12V, 15V, 24V are common.» READ MORE