Ms Pacman, what powersupply to use?

dextercf

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Hi all.

I have been lurking for information on this for some days, but have not concluded yet.

I'm about to drop a Ms Pacman pcb in a newly refurbished cocktail cabinet. It is not a dedicated original cab, but a generic cab which I want to dedicate to the Ms Pacman game.

That said, how and what would I use for powersupply on this game?
Is it perfectly safe to go with a regular switched PSU giving DC currents, or should I stribe for a VAC powersupply?
There should be taken into account that I'm in Norway, and we have 230 VAC "in-wall" here (Euro standard, I guess). Also, importing stuff like this is rather expensive. Trying to keep the costs down, as I have used way to much cash on this hobby recently than the old ball and chain approves. :D

Also, should I go with the JAMMA adapter or just build a harness for this game?
Guess I could make a harness by using a 22pin edge connector and some wires.. nothing fancy about those, right?
 
If you don't have the original power supply setup, you can very easily run it off of a standard switching supply. You do NOT need to make any modifications to the board. The DC will pass straight through the diodes on the board, and you can run it on 5v and 12v from a switcher.

You can just make your own harness, it's pretty simple with a 22 pin edge connector. If you want more flexibility, you can wire the cabinet as JAMMA and build (or buy) an adapter to go between JAMMA and the Pac board.

If your plan is to dedicate this cocktail to Ms. Pac, I'd just build a harness with a 22 pin connector and wire, and use a standard switching arcade supply (or a computer power supply, if you want to save money). It would be the easiest and cheapest method.

-Ian
 
Then I will make My Own harness, already ordered Edge connector (.jp/.ch) and use a switched PSU.
Know how many watts needed, take account two cp's with lighted buttons (perhaps convert to LED).
 
Any normal power supply is more than enough to power the game logic. The key is to use good thick wire for the 5v and 12v and ground wires to the board, and be sure the edge connector on the board is good. Done correctly, you will not have to "crank up" the voltage.

For the light bulbs, I'd probably just use a small filament transformer, and power them separately. The original game ran them off their own winding on the isolation transformer. You could very easily also run them off the switcher, there will be enough current. It really doesn't matter, it's just a personal preference - I don't like running light bulbs off the switcher simply because I've seen bad installations short out and shut down the power supply. Regardless of which method you choose, be sure to put a fuse in the circuit for the light bulbs.

-Ian
 
Yes. I will fuse and use wires thick enough for the "power lines".
About the lights, I never thought about using a different supply for these.
Don't think I'll go that way, as I'm allready wiring everything myself, I have only one person to blame if something blows up! :rolleyes:

I got a rather small PSU from an old barebone cabinet.
 
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