I need help reducing my car battery from 12v down to 8v and 1.5v The amperage also needs to come down to I persume since my car battery produces something like 800 amps. I am thinking about using resistors but I'm not sure which ones. I've gotten this far the device I use uses 8 v so 12-8 =4 4\20a=.2ohms Now How big does this have to be to handle at least 10 amps easly?
The other sid is 12-1.5=10.5 accross circuit. 10.5\5=2.1 Ohm This one is the one that is giving me the most trouble because it has to disipate heat fast I am leaning toward a 3w or 5w wirewound encased in concrete. what do you think?
The other sid is 12-1.5=10.5 accross circuit. 10.5\5=2.1 Ohm This one is the one that is giving me the most trouble because it has to disipate heat fast I am leaning toward a 3w or 5w wirewound encased in concrete. what do you think?