A Brief Introduction of Power Supplies

A power supply provides electricity loads in devices. They convert one form to another. Few control the output voltage to a stable level or compatible value and called regulated power supplies. 

They control the flow and stabilize, avoiding sudden fluctuations and power surges. Power supplies that convert AC current to DC current that is commonly and widely used. 

Electronic devices use two main types of power supplies, linear and switching. Linear voltage regulator is simple in design but could be great with the addition of high-current devices. They generate a regulated output voltage through an active voltage divider.


Unregulated power supplies, which are AC powered, using a transformer to change the voltage of electricity to the lower level. To generate DC from AC, using a rectifier. 

A linear regulated power supply used in such cases to maintain the voltage at a stable value and to protect against fluctuations in electronic applications. 

A regulator can reduce the ripple and noise of the output DC. A switch-mode power supply can change in the mains AC input to DC without an electrical transformer. 

DC voltage is then switched on and off at high speed with an electronic switching circuit. Voltage passes through the high-frequency inductors. This is the type of power supply set.