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In Reply to: RE: B7-15k posted by mqracing on September 03, 2017 at 15:43:46
"spice leaves out entirely important operating parameters such as core losses and the variation of perm with drive level. Or the beneficial effect of preserving magnetic head room on minimizing core distortion."
I don't really know that much about spice but couldn't those things be included in a sim?
Tre'
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IIRC, most versions of Spice include devices specified by their Laplace transform. That's what you need to get closer to these more complex effects.
But to the best of my knowledge, no transformer maker provides such detailed models. If you need it, you'll have to measure the device yourself, and create the Laplace model to approximate those measurements. I have done this, but it's a major pain in the backside. The only place where I find it necessary these days is in modeling the "inductance" of loudspeaker voice coils - and that one is simple enough that I do it in a spreadsheet.
.
Have Fun and Enjoy the Music
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