Al wrote:

I have a project for which I use a wall wart with 18VAC (not DC) output. Is
it safe to leave such an unloaded transformer plugged in for periods of
time?

Leave it plugged in for awhile and then feel of it.
If it is warm or hot, it's a poor design, and there
are some of those out there.
--
73, Cecil http://www.qsl.net/w5dxp


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