How to make 12-voltage SMPS?

How to make 12-voltage SMPS:

This is the 12-voltage SMPS circuit diagram. this is an easy circuit. used here KLY MK-21C Universal Power as the MOSFET. first makes ac 220 to Dc voltage 350. then the dc voltage goes to the transformer using this KLY MK-21C Universal Power. the transformer has 140 turns for the primary side and 14 turns for the secondary side. 14 turns also make ac voltage. in the secondary used one diode and one capacitor.

In the KL got one adjustable vol to adjust the voltage. we can adjust the voltage according to our needs. 

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Build a Transformer or construct the transformer. Home Theater Circuit Diagram 5.1

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