# winding a power suppy

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**1**50 Watt CAFz'r

Thread Starter

Join Date: Apr 2005

Posts: 224

**winding a power suppy**

I`m new to this part and want to learn I have a few amps in need of them so this is a good time to try my hand.The thing is I am not to sure where to start and how many winds to put on.The amp I`m starting now is a 75Wrms X2 amp in 4 ohms and 150Wrms X2 at 2ohms or 300Wrms X1 at 4ohms.I would like to beef it up a small bit because heat killed it last time.If anyone can help that would be mint or if anyone knows where to buy them that would be cool to but I`m realy in to doing my own.Thanks

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**4**50 Watt CAFz'r

Thread Starter

Join Date: Apr 2005

Posts: 224

ya but what if the amp will be beefed up I will be making it bigger so to say.Ok say if i was from the drawing board to final product how would I find all that info at the drawing board(say if the amp is not even to PCB form im in draft)?

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**5**1000 Watt CAFz'r

Join Date: Aug 2001

Posts: 1,770

Originally Posted by

**abnormal72**If your trying to wind a transformer,

You can count the turns

or Measure the resistance, and calculate how many feet of wire you need to get that total resistance

and

you need to use the same gauge wire

You can count the turns

or Measure the resistance, and calculate how many feet of wire you need to get that total resistance

and

you need to use the same gauge wire

transformers work of the amount of turns and the ratio of them

primary vs secondary

resistance has nothing to do with it

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**6**50 Watt CAFz'r

Thread Starter

Join Date: Apr 2005

Posts: 224

ya i was lost on that part to I found nothing like that but How would I find that stuff all out(amount of turns and the ratio of them primary vs secondary)?

*Last edited by Not loud enough; 05-17-2006 at 09:12 PM.*

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**8**The turns ratio will determine the primary to secondary voltage, the resistance will determine the amount of current actually passing through the primary as well as the heat dissapated in the transformer.

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**10**50 Watt CAFz'r

Join Date: Mar 2003

Posts: 359

Originally Posted by

**pinhead**transformers work of the amount of turns and the ratio of them

primary vs secondary

resistance has nothing to do with it

primary vs secondary

resistance has nothing to do with it