> Do you have a computer prog to calculate the turns needed for Prim/Sec
> inputting the various variable parameters ie core size and type, freq, etc.
I wrote a tiny DOS program for transformer design a few years ago.
(it will happily run in a "DOS bubble" under window$ too)
The program is attached, including source code. I hope it is correct,
maybe some xfmr guru on this list can approve/refuse the math used...
There are two things to aim for:
(1) - Enough turns to keep the magnetic flux low (avoid core saturation)
(2) - Enough turns to make inductance high enough (avoid reactive current)
Depending on core properties, the optimum number of turns will be guided
by either (1) or (2).
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