How do I make a battery backup for a circuit?


Posted February 28th, 2010 by admin 3 Comments »
battery backup
Daniel asked:


Well I’m trying to make a circuit that has a battery backup that picks up if the 12 volt power supply fails, how would I go about doing this? Possibly rechargeable battery as well but at this point ill take what I can get.

I have a hard wired smoke detector with battery back-up. The battery is getting hot any idea why?


Posted January 18th, 2009 by admin 2 Comments »
battery back up
wolfaww asked:


It is a non-rechargeable battery like what was in it originally.