[time-nuts] [volt-nuts] Safe power-up. was (Solartron 7075 ...)

Poul-Henning Kamp 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 
>it.
>(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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