[time-nuts] [volt-nuts] Safe power-up. was (Solartron 7075 ...)
phk at phk.freebsd.dk
Mon Oct 10 17:30:48 EDT 2011
In message <4EF131EAEF2E45BA8C7658C73574525B at Warcon28Gz>, "WarrenS" writes:
>I don't plug ANYTHING new to me, directly into the line the first time I try
>(especially if it had a blown fuse)
>Here is the solution that I use for a universal, general purpose, tester for
>Old (and new) equipment.
That procedure is fine for linear power-supplies, but not resonably
modern switch-modes. In particular, anything that has PFC correction
is not going to respond too well to variable voltage like that.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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