> 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.
Hi Mal,
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).
73
Johan SM6LKM
trafo.zip
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