Ethan, Thus far, I've been using a few different regulator types from https://www.ezsbc.com/ in various amperage and voltage combinations. A few people have warned about needing additional capacitors to mitigate jitter, but I haven't seen all that much during tests. When I did the first one, I added an extra tantalum per recommendations, however it actually added more ripple to have the extra caps so I removed them. Your mileage may vary. Here's the VIC-20 I installed one in: https://commodorez.com/img/silvervicguts.jpgAnd a photo of the outside, if you're curious: https://commodorez.com/img/silvervic1.jpg That VIC-20 is assembled from the discarded parts of at least 5 machines, including most of a C16 keyboard, and 6502 + 6522's from a dead 1541 drive. The case was pretty scuffed up, so I figured there was no harm in giving it a paint job while I was at it. It runs super cool now, even after a few hours of operation. I've contemplated adding heat sinks for some of the IC's but haven't crossed that bridge yet. This VIC came with me to VCFMW last fall, flown in as my carry-on item, where I used it to wardial the show's PABX with a modem 300. Here's the 1541 that received the same treatment: https://commodorez.com/img/1541regs.jpg The downside is that you can no longer us it to keep your coffee/tea warm. Let's see if the list serve processing will preserve my line spacing this time.-Alexander 'Z' Pierson