14 May
2007
14 May
'07
5:08 p.m.
Would it perhaps be better to insert a series resistance with the
mains supply rather than a variac? This would allow full line
voltage to be present at the input of the PSU, yet provide a bit of
protection should something start to draw a too-large amount of
current.
I'll usually insert an appropriately-sized incandescent lamp in
series with the line when I'm powering up an older piece of equipment
in unknown condition.
Cheers,
Chuck