23 Jan
2004
23 Jan
'04
5:33 p.m.
Argh, no no no no no! Blue is always Neutral, Brown
is always Phase!
Horrible things can happen in switched mode PSUs if you don't follow
Care to expalin why? Every SMPSU I've worked on has had a totally
symmetrical input (with the possible exception of the mains filter
capacitors) and couldn't care less which wire is 'hot'.
IIRC, the regulations explicitly forbid making assumptions about one of
the wires being close to earth potential, with the exception that you can
have single pole switching (and of course the single-pole fuse) in the
live wire only.
-tony