Originally posted by Matthew Jones
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I do suspect something strange - as you said, since iron core isn't meant to run in kHz range.
Just dissected power backup unit transformer. It has a fair size EI core. I took 4mm winding off but I'm debating on the remaining two. One is #19 and second #23 (approx). I'll take them off, I guess and wind #18. I should have plenty of space to isolate each.
I could wait until tomorrow and look for a bigger one but I'm anxious to see this running.
Thanks
Vtech
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