8' drive on PC troubleshooting

[Tony Duell]

> 
> > And if anyone really needs a +24V supply,
> 
> ...can't you take two bog-standard peecee power supplies and connect
> ground of one to +12 of the other and get a 24V rail that way?  I
> *thought* the output side was supposed to be isolated.

Isolated from the power line != isolated from ground

I would not be at all suprised to find that the 0V line on the output 
side is in fact connected to mains ground. If that's the case, you fairly 
obviously can't link 2 PSUs in series

-tony