In article ,
Arfa Daily wrote:
Ahh, grasshopper, to modify the 12v rail first you must find the
voltage reference for the 5 v or 3.3 v rail, your journey will take
you into the realms of voltage dividers and the TL431.

Ain't got one of those.


Yes it has, Dave. With that particular supervisory IC, it's behind the
reference and feedback pins, and not an external discrete device, as I
previously explained ...

Right - having read the spec more carefully it does indeed state it
contains two of these. So please accept my apologies.

If you're not understanding the principles of
how these things regulate, then I don't think you are going to get too
far with this project.

Well, if I were an expert on them I'd hardly need to ask here.
It's not for some life support mechanism, you know.

--
*Bigamy is having one wife too many - monogamy is the same

Dave Plowman London SW
To e-mail, change noise into sound.