12 Volt Off Line Power Supply

This is a simple circuit for switching power supply. This circuit is using converter concept. This is the figure of the circuit.

This circuit can work over an universal input AC line voltage range 90-240 VAC and provides 12 VDC output when over 4A loaded. Line and load regulation is better than 0,5%. This circuit has over current, over temperature, over voltage protection. The output ripple is approximately 0,2Volt peak to peak.