:?: I have a battery that I need to charge for 7-8 hours. I would like to build a circuit that cuts the power after 8 hours. I would also be nice to be able to move between 5-10 hours of charge time. Does any one have a design for this? The input would be a standard US 110v outlet, the load is a 8.4v 600mAh Nicad battery pack.
I guess a circuit that check when the batteries are full charged and then with a relay shut the power will be more efficent, rather that meassuring time....
use google.com to find the circuit, i have seen it, but i can not remember the site.
you might be able to use a comparator and a relay to turn on the input of your charging signal ..thay way when the potentional is met it will automaticly turn it off and visa-versa...