There are many different kinds of power supplies which are suitable to be used while running different kinds of machines. Some of the machines need and prefer AC power supply while others may not prefer it. Some of the devices may need a DC DC converter while AC power supply may be the most suitable one for the others. AC power supply is important, as the electric companies most often than not provide electric power in AC format. We do need Dc converters to convert the higher voltage AC into low voltage and slower DC. AC power supply comes into use when AC power is to be supplied.

Usually the machines prefer using DC power and thus when the power is sent by the AC power supply, it is converted to DC before the machines eventually use them. A power supply actually is made up of many working blocks. It has a transformer which receives AC current through AC power supply. In the next step the current is properly rectified. This means that the current form the AC power supply has been converted to DC but the voltage is not uniform at this stage. The next step is to smooth down the voltage of the current.

The next step in the conversion of current supplied by an AC power supply into Dc is to smooth the current. At this stage the varying voltages are made into one ripple which is smooth enough. The final step is to regulate the smooth ripple. By regulating the ripple we mean that the DC will now have one common voltage. In this way the current from the Ac power supply is converted into DC and now it becomes suitable for all the machines to use it. In This way AC power supply works to provide the power to almost all the machines indirectly.