I made this a while ago but only now tested it. I got tired of the large size of my C64 PSU and looked around for off-the-shelf solutions. I didn't find anything you could buy, but I learned that you could provide +5VDC and +9VDC and run the machine and many peripherals, sacrificing only the ability to power the Time of Day logic that depends on the usual 9VAC input.
I saw that someone did this by supplying a +5VDC @2A to a charge-pump voltage inverter, delivering +5VDC and +10VDC to a C64C: http://www.lemon64.com/forum/viewtopic.php?t=61160&postdays=0&postorder=asc&start=0
I decided to go a different route to ensure there was enough headroom for heavy power draw. I took two commercial buck regulator modules and wired them up inside a 3D printed case I made, and connected it up.
The boards glow a fairly bright blue that I may diffuse, though it's more intense in the photo than to the eye. I also made a black PSU case in which it'd probably be less intense. The DC input is from a 12VDC wall wart. A 3A one should do the job. The machine seems to work fine, including my SD2IEC.
Here are the modules ($2 each if you buy a pack of 6): https://www.amazon.com/RioRand-3-01-0076-Converter-Module-1-23V-30V/dp/B008BHAOQO
A AC/DC converter like this would work to power the modules: https://www.amazon.com/Selectec-12-Volt-Power-Supply/dp/B009ZZNHYC
I saw that someone did this by supplying a +5VDC @2A to a charge-pump voltage inverter, delivering +5VDC and +10VDC to a C64C: http://www.lemon64.com/forum/viewtopic.php?t=61160&postdays=0&postorder=asc&start=0
I decided to go a different route to ensure there was enough headroom for heavy power draw. I took two commercial buck regulator modules and wired them up inside a 3D printed case I made, and connected it up.
The boards glow a fairly bright blue that I may diffuse, though it's more intense in the photo than to the eye. I also made a black PSU case in which it'd probably be less intense. The DC input is from a 12VDC wall wart. A 3A one should do the job. The machine seems to work fine, including my SD2IEC.
Here are the modules ($2 each if you buy a pack of 6): https://www.amazon.com/RioRand-3-01-0076-Converter-Module-1-23V-30V/dp/B008BHAOQO
A AC/DC converter like this would work to power the modules: https://www.amazon.com/Selectec-12-Volt-Power-Supply/dp/B009ZZNHYC