Check out Marlin P Jones (www.mpja.com). They have a number of surplus
switching supplies -- they should have some 12V supplies that really _are_
12, and are isolated so you can rope them up in series. I do not know if
they have supplies that can go to 35 amps, but as you said in another post
you can supply each motor seperately. I usually browse their site, then
check out the supply manufacturer to see if the supply is still listed.

They _won't_ be as cheap as PC power supplies, but they _will_ give you a
much greater chance of success, and the are cheaper than the same supplies
new.

--------------------------------------
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com


"Charlie" wrote in message
...
Since I have these power supplies laying around, I can't resist asking.


A friend is going to buy and/or build a robotic CNC setup for his plama
torch.
A system is $5000 complete or a mainboard and software can be purchased
for
$1500
or so with him supplying the motors, power supply, etc.

He says he needs 35 volt power supply with 35 amps.

So if I wire together 12 power supplys (12v, 9a), voila, 36 volts at 36
amps.

Hehe, it can't be that easy can it?

Thanks for your thoughts. I'll give Marlin P Jones a look!


"Tim Wescott" wrote in message
...
Check out Marlin P Jones (www.mpja.com). They have a number of surplus
switching supplies -- they should have some 12V supplies that really _are_
12, and are isolated so you can rope them up in series. I do not know if
they have supplies that can go to 35 amps, but as you said in another post
you can supply each motor seperately. I usually browse their site, then
check out the supply manufacturer to see if the supply is still listed.

They _won't_ be as cheap as PC power supplies, but they _will_ give you a
much greater chance of success, and the are cheaper than the same supplies
new.

--------------------------------------
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com


"Charlie" wrote in message
...
Since I have these power supplies laying around, I can't resist asking.


A friend is going to buy and/or build a robotic CNC setup for his plama
torch.
A system is $5000 complete or a mainboard and software can be purchased
for
$1500
or so with him supplying the motors, power supply, etc.

He says he needs 35 volt power supply with 35 amps.

So if I wire together 12 power supplys (12v, 9a), voila, 36 volts at 36
amps.

Hehe, it can't be that easy can it?

On Sun, 1 Feb 2004 11:30:10 -0600, "Charlie"
wrote:

Since I have these power supplies laying around, I can't resist asking.

Screw the CNC stuff..gut the old towers, put a piano hinge on the side
cover...insulate 'em ( keep the PSU), add a peltier
{http://www.vibecomputers.com/index.cfm?loc=hardware&if=y&mcat=45&scat=00}
( power it with the old PSU& appropriate fans/heat sinks) and make a
"computer beer cooler"!
Make sure the front LEDs still work..so it looks like a real computer
when the boss walks around! ;-)