MrDEB Well-Known Member Today at 9:51 AM #1 Building a clock and decided to include a battery backup. I wanted a MOSFET, but a small DPDT relay is perhaps easier. here is my schematic that I am consifering. /
Building a clock and decided to include a battery backup. I wanted a MOSFET, but a small DPDT relay is perhaps easier. here is my schematic that I am consifering. /
A aliarifat794 Active Member Today at 9:55 AM #2 Looks OK. However, it is better to simulate the circuit. Upvote 0 Downvote
Nigel Goodwin Super Moderator Most Helpful Member Today at 11:07 AM #3 Jesus, all you need is a single diode, or at most two - but the second isn't usually needed (as the bridge rectifier usually serves that purpose). Upvote 0 Downvote
Jesus, all you need is a single diode, or at most two - but the second isn't usually needed (as the bridge rectifier usually serves that purpose).
D Diver300 Well-Known Member Most Helpful Member Today at 2:51 PM #4 It doesn't look right that the relay needs to be energised to connect the backup battery. Upvote 0 Downvote