How to Repairing Switching Power Supply

Up to date power supply are renowned as "switching controller power supply." In most swapping supply, the 110 volt AC input is first rectified by two diodes and filtered by a pair of capacitors. This conceives two high- voltage causes; one positive and the other negative. A pair of transistors is then utilized to switch these high voltage supply over the primary winding of a transformer. 

This switching activity is very fast. A usual switching pace is around 40,000 circuits per second or 40KHz. An integrated circuit is commonly utilised to control the transistors. This IC not only controls the pace at which the transistors are swapped, but furthermore controls the amount of time that each transistor is energized. The yield voltage of the power supply is very resolute by the "on" time of the transistors. If the transistors are hold on for a longer time span of time, the output voltage of the provide will rise, while shorter times smaller the yield voltage. This is renowned as "pulse-width modulation." 

 Power Supply