23 Dec
2010
23 Dec
'10
6:42 p.m.
On 12/23/2010 01:31 PM, Eric Smith wrote:
Tobias Russell wrote:
Agreed! My favorite is a series lamp in the 40-300W range to limit
current and run the SMPS
with a light load (10% of rated). If there is a short the lamp lights
to limit current and all is good
it's dim or no glow.
Cheap and fairly simple, insures the start voltage is near 100% if the ok.
Allison
I've recently acquired a Variac (220V 10A)
and was wondering what the
collectives views are on using them to revive long dormant power
supplies.
[...]
but will it also work with later DEC switchmode
PSUs?
No! You should never run a switching supply on a variac, except
within the supply's rated input voltage range. Definitely do not plug
the supply into the variac and dial it up from zero!