Quoting Peter Voelpel <dj7ww@t-online.de>:
I guess with transformers the relay should switch in on the peak voltage.
As current peaks 90 degree behind that should be the best moment with least
surge current.
73
Peter
But if you switch at zero voltage, the current is at zero 90 degrees later...
So you have at least 1/4 of a cycle where there is minimum IxE
supplied to the load.
Don W4DNR
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