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Thanks for your quick reply. I live in Nigeria and it is so hard for us here to get core sizes we want so I made do with one from a smps unit I bought here. I recoiled it to that spec so as to accommodate more stress. And I am using it to supply 12v dc. Pls advice. Thanks
This design suffers from the danger that if the two half of the secondary are not perfectly balance the difference in voltage will result in a a current flowing back through the smoothing capacitors (the 4 X 47000). this will result in dissipation in the transformer/diodes/capacitors.