Hi All,
Digital electronics I can do, more conventional stuff, well I'm probably closer to beginner than anything else.
Hence why I find myself here asking this question.
I have some specialized computers for powering industrial equipment, 4 serial ports on them a digital I/O system on them, 2 Ether, 4 USB and the whole thing just looks like a giant heat sink designed to be bolted onto the side of something.
What I don't have however are power supplies.
These things have a green 3 pin connector, which I've already sourced plugs for, the 3 pins are -v, grnd, +v
The voltage input to these things is from 9V all the way up to 40V so they can operate on quite a range.
My problem however is the ampage.
The - and + both require supplys that can support up to a 3 amp or above draw.
I have a whole bunch of old but working ATX PSU's kicking about, and all of them will give +12v at up to 20A but I can't find a single one that will give more than about 0.3A on the -12V output.
so, my question is.....
Is there anyway I can up the ampage on the -12V rail?
I don't mind having to build an external circuit with something like a boost converter if that's what I need, as long as
A) The + & - voltage levels match
B) Both + and - can hold 3A or higher
Ideally though, I'd like to modify an ATX to do this, or at the very least build an adapter to connect to the -12 that allows me to draw higher, is this possible?
Cheers
Shawty