Hi There I am about to start work on an arcade supergun (first for me). I had already desided to use a PC power supply for the 12 and 5 volts. What I would like to know is if I could use this: (sorry for large image) Its an ITX 60w PSU from one of my Mini ITX setups. Would this be powerful enough to power arcade PCBs or 1 slot NeoGeo, or am I asking to much from 60W? If anyone knows the Watage requirements for other systems like the MVS and CPS2 that would also be helpfull. Thanks:thumbsup:
60W should be enough for any reasonably integrated board, but you may run into problems without a -5V source. Neo Geo runs under 10W, and I imagine CPS2 is around the same as long as they aren't driving speakers.
Yes, I forgot about the -5 volt. I know PC PSUs provide -5 from the white wire on the ATX block, but I dont know if this ITX PSU does. The pin under the ATX block (under the White wire) looks like it does nothing. I might have to get the old multimeter out and check.
It'll work fine for more modern games (they tend not to need -5V, like the Sony boards) but older ones will lack sound. I used a PSU with no -5V line for a while on my Supergun, all my PCBs worked fine but with no sound (the -5V is usually only used for the audio amp). Your mileage may vary. Stone
Thanks Stone and Calpis for the advice. I have found an other PC PSU that will fit the case I will use. Its an old small form factor AT PSU with all the power inputs I need. On the subject of sound, Is there a safe way of outputing the audio to the scart connector. I was planing to just use phono scockets and unpowered speakers, but if I can get it working through the TV it would be a bonus.
Look at this picture : http://gc339.free.fr/JPEG/SuperGun.jpg Direct wiring to the audio pin on the scart may be dangerous.
Wow. Thats a very helpfull diagram, thanks Evangelion So the device from Sphynx.be allows the audio to be converted down to line level. I found this through google: http://www.m-99.co.uk/Car_Audio/High_Low_Impedance_Adapters/high_low_impedance_adapters.html I think it will do the same thing. For now I will link up the mono audio to an external speeker, and look into this a little later. Thanks
if you just need more power universal laptop power supplies are roughly the same size and go up to 105w.
With my Supergun audio goes to RCA phono plugs which I connect to a speaker system. I've never had any problems with it. But I wouldn't connect it directly to a TV, or if you do you need to turn the TV's volume to 0 every time you start up a game and slowly increase from there so you don't blow out the speakers or something. You'll need -5v for many games like Mortal Kombat or CPS2's QSound. However CPS2 can be set to Mono audio over the JAMMA connecter and I believe it will work without -5v then. But I don't recall for certain on that.
Hi MottZolla. I think your right. I will stick with just the RCA sound. Things are going very well. I have finished the power and video systems and it all works great. Sorry for the untidy room. Its running my 1 slot Neo-Geo Jamma unit fine. The game is Shock Troopers (bad timing for the photo) The Image is even better than my MVS arcade machine. I have also tested it with R-Type II PCB and my Neo-Geo 64 system. Thanks for all the help guys.
