Switching power supplies are electrical circuits
that help to convert power by using devices that are turned either on or off at various frequencies. They also use components such as capacitors and inductors when the switching device is not in a conduction state. The devices are highly efficient and are mainly used in electronic equipment such as commercial and industrial computers. Switching power supply, also referred to as switch-mode power supplies, are integrated with a switching regulator to help convert power from one form to another. For example, the device can be used to convert unregulated DC/ AC input voltage to a regulated DC output voltage.One of the main principles used in the switching power supplies
, in the case of a DC-to-DC converter, is that a high voltage DC input is fed to a step-down transformer before being directed to a rectifier. Then, the rectified output DC power is used as input for various electronic devices. In the event of AC to DC converter, the input is first converted to DC before being taken to a step-down transformer and a rectifier.