Whenever I’m in the car listening to my favourite CD, it always happens; my batteries go dead. To solve that problem, I built this extremely simple regulator circuit. It steps down the 12V from the ...

I'm not sure if this is the correct forum to post this question in, but it seemed to be the best I could think of right now. If it's in the wrong place, any idea which would be a better forum?<P>I've ...