Halden, now that everybody has been silent, ???
???“would an SSR that turns on at zero voltage and turns off at zero current ????????????put the core back to zero every time and prevent current surges at turn-on”

I looked around and can’t find just how much magnetism is normally left in good transformer steel.

Sketches in tutorials are not to scale and deceiving IMO. ?I recall real hysteresis curves from years ago, and ?there was a only a small amount of magnetization left.? Restoring it to zero is a tall order. ??The idea of removing magnetism is best displayed in tape head demagnetizers and such where the AC magnetizing force is gradually reduced.

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