DIY DC Generator from cordless drill.

Описание: DIY guide to using cordless drills as Generators.
In this video you can see how the motor and gearbox can be used to generate low voltage dc. When turned with a small hand crank from a fishing reel. 6v 12v and 18v cordless drills are tested. You can also see how to modify gearboxes that have reverse torque protection. Sometimes a necessary modification to use a variable speed drill motor as a generator. I also have a quick look at how the speed control works.

Current from the 18v drill after gearbox mod. maxed out at 3.5 amps. The current sense resistor in my meter measures at 2.2 ohms. So 3.5a/2.2ohms= 1.6v 1.6v @ 3.5a is a respectable 5.6 watts of power.
the two 12v drills both peaked at 5 - 5.5a, and the 6v drill maxed out at 3.5a. I'll let you work out the watts across the 2.2 ohm resistor.
If I had to chose the strongest I would be inclined to go for one of the 12v drills. with the other 12 and the 18v second and the 6v coming in last. Although the amount of hand crank force to achieve max amperage was lower, so a lower voltage dc motor could be good for situations that require low load on the energy source.

Feel free to ask questions in the comments below this video. Thanks for watching.