MB6582 - C64 PSU replacement

[no-fi]

Hi all,

I made a 6582 in the standard case earlier this year, but I didn't get to use it for long, as I'd wired it up to use the C64 power supply, but then my poor old beige C64 power supply I had been using died.

anyway - I left it alone for a while cause I've had a lot of other stuff going on this year, but ended up replacing the 64 supply with an open frame PSU module, and thought others might be interested in what I did.

here's the supply I used:

http://www.jaycar.com.au/productView.asp?ID=MP3108

it's a 12V/5V supply with 3/4A max delivery (up to 60W total)

I ended up buying a plastic box for this, and some waterproof glands, and cutting the cables out of my C64 supply to use with it. (C64 power plug pinouts are available all over the net, and if you don't already know what to do with mains, stay the hell away from this idea) Apart from the basics, the big difference here is I've replaced an unreferenced 9vAC with a 12V referenced (to 5V GND) power supply - you only need to put the 12VDC on one of the original 9VAC pins, it goes through the bridge, and comes out the other side fine, but when you do this check that the switch on your MB65852 turns off your 12V supply (it only breaks one pin of the 9VAC input so if you use the wrong pin, you can't turn off your 12V rail with the switch!)

so yeah... working 6582. it doesn't seem much if any noisier than how it originally was (and really, with a 9V linear regulator between 12VDC and the SIDs, I don't expect much noise here anyway)

Apart from all this, one thing to watch out for is if you can't get the open frame supply snugly mounted in your box, and you need to use screws through from the PSU frame to the outside, then you really need a metal case, and a mains plug with an earth wire that is bonded to the metal case.