I am just curious if anyone on here has knowledge in this area. I am back to work on my SNES portable. The two questions I have are: 1. Can I just use the 7805 step down regulator if I put a proper heat sink on it or will it get too hot? 2. I am not planning on including any kind of fan, and my case will provide plenty of air space, not packed too tight, but what kind of heat sinks should I get and what chips do I need to put them on to ensure I don't have any overheating going on? Thanks.