- Joined Mar 3, 2011
I have a little fish tank with LED lighting. It has a red green and blue but it's set to only have one blue LED on. I hooked it up to a remote switch to turn on and off at the wall supply, but the LED uses such little power that not only does it slowly fade off but stay very dim for quite a while. And fir some reason doesn't fully discharge until I switch to the other colors. Or I assume wait a few minutes but I havn't actually even been patient enough to sit in the dark and see how long it takes. Anyway the wall transformer is 12v, 150ma. I was wondering if there is an easy way to make it fully discharge when switched off. There is a barrel connector at one end so it would be easy to wire to it, I just don't know what sort of a circuit would do the trick. I would imagine I might need an IC that detects when the voltage drops to switch a bridge between the anode and cathode of the power supply. If that's the case I may not want to bother. But if there's something more simple I could give it a shot.