[Test-Equipment] Putting power to 7904 out of storage

[J. Forster]

IMO, bringing up a switcher on a variac is iffy. I use a line cord fixture
with a few ordinary light bulbs (parallel connected) in series with the
hot side. This prevents fires in case of a serious failure. On a good
supply, they will have little impsact, except for inrush limiting.

Best,
-John



> Dennis,
> You may be right about the switching PS requiring different start-up
> procedure.  In any case, I'd recommend monitoring the input current to
> be sure it does not get excessive.  I have used, for decades, a
> metered variac to power up long dormant equipmwnt; maybe even saved a
> few power transformers.
>
> If you have a variable voltage DC supply, you might consider applying
> dc to input of DUT PS filter circuit and monitoring the current as DCv
> is increased.  This procedure will also reform long dormant
> electrolytics. Cheers, Chase/K4AFW