PinKitty

Hey Njay, I think the 4a is a good choice, seeing the specs say it uses 3.5a at 100% lit. I thought I was over-amping when I said 3a. I did not realize that the 12V plasma required so much amprage. I'm only using 1/3 amp on my high voltage plasmas.

that will work

hi njay that's how i would do it and fuse it with a 3amp fuse for safty

I've used a Bally Williams dot matrix controller board to power my plasma dmd with russdx pinDMD board. To put power to the dot matrix controller board, you need to get your 5V and 12V and ground from your computer supply. Then two small step down transformers to run the 80VAC and 100VAC that would normally come from the large transformer in the bottom of a real pinball machine's cabinet. In the US, I use a 120VAC to 100VAC Japanese step down. These are relatively inexpensive and easy to find on internet. Here's one source http://www.voltage-converter-transformers.com/japanese-up-down-transformer.html For the 120VAC to 80VAC, I found it here..http://edcorusa.com/c/37/xpwrseries. When you go to this site, you need to select your secondary voltage on the left st 80V. Then the transformer will come up at $20.01. The wiring diagram for the dot matrix control board is found in wpc games manuals. For instance, you can go to the international pinball database and look up Theatre of Magic. The diagram is on page 3-31 of the English Manual. I have not used the exact tranformers from these websites to power my display. I was fortunate enough to come across some at work. But I hooked up this system, and powered my Vishay plasma display this way, so I know the concept works. I used russdx pinDMD board to run the signal from visual pinball. However, I found my Cherry displays do not work with the pinDMD board. Russdx is still working on that.