Build a Power supply For amp.

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Joined 2002
Hi All...

I Want to build a power supply to Car amp. i Need the supply in the end 40V +/- of 15A.

now i build all the circuit but i the transformer i want to build to.
how can i do that.

*that direction of winding is matter??
*what the size of the wire in need to winding in the transformer
i need to put in the input and that the output i need to put to get a 15A of 40V + -. thanks !

the circuit is build from 12Xirfz44 (6 for side). it is good?

thanks.
Tamir
 
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