Computer psu in cabs?

CoinOp

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Anyone have experience installing atx psus in cabs? I get them stupid cheap where i work. I have a joust with a dead psu, but also just for other games in the future.
 
I've installed a computer PSU in the 60 in 1, to run that board alone, and not have to hack up any of the ms pac wiring. For conventional arcades they wouldn't work well. The PSUs need to be adjustable.
 
Anyone have experience installing atx psus in cabs? I get them stupid cheap where i work. I have a joust with a dead psu, but also just for other games in the future.

I used one for some time on the bench and really don't recommend putting one in a cab. The Switcher power supplies are not much.

http://www.ebay.com/itm/330571172387?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Most arcade game boards like more amps on the +5 line than what some computer supplies can produce.
 
Anyone have experience installing atx psus in cabs? I get them stupid cheap where i work. I have a joust with a dead psu, but also just for other games in the future.

You can but you need to use a bleeder resistor across +5 and gnd which
will get very hot. Best to stick with a lower amperage supply from Happ
or similar.

JD
 
you could additionally install a fuse in line on the +5 too right? I've seen that before. set it at the rating the comp power supply can handle.
 
One of us needs to comeup with a cheap method of installing a pot onto a regular atx supply so the +5 can be adjusted.
 
I was running an atx computer supply on my bench rig for a couple years. It ran all boards just fine except for nintendo boards. Nintendo boards would occasionally not boot up but a couple flicks of the power switch and they would boot. Once they were running it was fine.
I recently replaced it with an adjustable supply because the atx was having issues. It was well used prior to installing it in my rig.
 
As I just installed an AT power supply in one of the cabs, just for the -5 voltage.
I had a few ATX and AT ps' laying around. I measured all of them with a multimeter, the voltages were all over the place. Not consistant at all.. even for the -/+ differential. Now if your game really likes a specific voltage, as some games are finicky, go with a switching power supply. Being able to adjust the voltage is a saviour sometimes.
But if your game just wants voltage, hell short the green and black together and hook up the rest. :)
 
I've got ATX Williams ps adapters in stock. Plug and play.Also can dig up some ATX ps with -5.. All ATX ps I've used do not have a place to adjust the voltage.. Pm me if your interested
 
I never see a pot inside ATX´s PS, yes circuits are similar to arcade, with TL494 or K7500, the 2 C3039 or equivalent, and LM324 or LM339. So if you study the diagram, should be easy to add a pot comparing with a peter chou, for example. But I don´t think it worth the waste of time, considering the cost of a new PS...
 
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