salamontagne
Experienced Member
After OCD'ing myself trying to find an new atx power supply that provided the -5v rail, I decided to try
and plug a later psu and see if it would work with my isa AWE32 card. Surprisingly, it worked just fine.
My question is, what boards (and from what era's) actually required the use of the -5v rail? I seem to remember some scsi boards needing it, but after that I'm drawing a blank. If i recall my electronics theory correctly, the biggest use of a negative rail is for noise suppression or to assist a class D push-pull amplifier.
So, to put it another way: Why the hell are the -5v and -12v rails needed in PC's?
and plug a later psu and see if it would work with my isa AWE32 card. Surprisingly, it worked just fine.
My question is, what boards (and from what era's) actually required the use of the -5v rail? I seem to remember some scsi boards needing it, but after that I'm drawing a blank. If i recall my electronics theory correctly, the biggest use of a negative rail is for noise suppression or to assist a class D push-pull amplifier.
So, to put it another way: Why the hell are the -5v and -12v rails needed in PC's?