adapterpowerpower supply
I have a dewalt 18V cordless drill. I am wondering if it is feasible to build an adapter that can power the drill from a standard US wall socket?
A typical DeWalt drill needs 2.6 amps with no-load. I am assuming this jumps significantly higher under load. Most DeWalt motors have a stall current over 250 amps…
Any insight would be greatly appreciated!!
I think it's a bad idea to have the bare copper exposed for several reasons:
You just need to find the right barrel connector for your clock and wire it to your camper 12V battery. If this will be a permanent installation, wire it directly to a 12V tap. If needed temporarily, wire it to a cigarette lighter adapter.
Take your barrel connector to RadioShack and you should be able to find it there. You may also pick up some wire and cigarette lighter adapter.
Make sure to watch for polarity when you build the adapter.
Best Answer
It would be possible to build such and adapter. It would depend on the rating of your drills and how you want to plug in the power.
Either way a cordless drill has a DC motor so it will require a step down transformer and a full wave bridge rectifier. Probably also need a regulator and a few capacitors. You might be able to use the power transformer from a laptop or some other device. But the voltage must match the drill and the ampere requirement must be very similar (more you can fry the drill less you can fry the power supply.)
As for how you attach the power supply I would recommend building the interface out of an old battery pack so you don’t have to modify the drill. But it should be possible to add an auxiliary power jack to the drill as well.