Foam cutter Power supply

[wdp67]

Hi everyone,
New to the board, built my new foam cutter using Hobbycnc board and motors, but am having trouble with building the power supply out of a computer power supply. Anyone with experience in this care to helo me out a little?

Walt

[Evodyne]

Walt,

Hi! Not sure I can help at all, but maybe you can elaborate a little about what you've done, what your looking for or expecting, etc. Fill us in...

Lance

[wdp67]

Well I tried to convert a pc power supply per the instructions from hobbycnc, but I am not getting any power at all. I am a little confused as to what kind of power supply it is, at or atx as the computer I got it from says it is a atx but I looked up the part # on the internet and it says at. Atx power supplies also are supposed to have a green wire and the only green one that I see is the ground wire. I have not installed a switch yet either which may be the whole problem but I do not know which wires to hook up to the switch. Any clue?
Thanks
Walt

[Evodyne]

Walt,

Sorry, but no, I haven't a clue. But there's bound to be someone here who can help...hang tight. And good luck!

Lance

[wdp67]

Thanks I hope so I got airplanes to get cut!

Walt

[smarbaga]

whats the voltage for this hot wire, how many amps does it need,
does it need to be adjustable,
does the power supply work ( tried it with a computer)
are you activeting the power good line on the power supply.
does the fan turn.
did u try it with an old hard drive or something like that plugged it.
did u put a volt meter on it to see if u get 3.5, 5, 12 volts.
ps: these psu's are small, quiet , but they can kill you, be carefull.
let us know

[Grom1]

Maybe it will be help you.It is the electrical circuit of a power supply for a foam cutter.
http://nsrca.org/technical/tip_trick...wer_supply.htm

[smarbaga]

a computer power supply is not a good replacement for this foam cutter power supply.
look around at electrical places or ask the guy in the next electric contractor truck you see stopped. ask for a 24v controle transformer at 2 amps or more.
if you are lucky $15.

[HobbyCNC]

Folks,
The power supply is for the "CNC" control. NOT the BOW power supply. 12VDC is more than adequate for this purpose.

Dave Rigotti
HobbyCNC.com

[Barry_DVRC]

I suspect this is what your after.

All the best

Barry

[GAWnCA]

OK Dave, What about a power supply for the bow or hot wire? I've seen everything from 600 watts to 800 watts needed to use a 8' wire or to run 2 wires.

Thanks.

[erase42]

http://wiki.ehow.com/Convert-a-Compu...b-Power-Supply

this should answer all your computer power supply questions.