ac or dc or does it even matter
I just saw a video on the web about a heater made out of a coffee can and some other odds and ends. My question is, its a 12v dc contraption. Can I use 12v ac instead ( like splice a 12v plug for a keyboard or something ) or will it not work? I can be more detailed if needed but i didnt want to post where or what the video was exactly since Im not sure Im allowed.