C
Claude Desjardins
Michael said:None of those I've seen used an IC in the speed control. Also, he
didn't mention a filter capacitor, so id may be a simple dimmer
circuit. It's hard to tell from such a vague description. Part numbers
would have been a big help.
BTW, have you seen the small DC powered clone at Harbor Freight? It
runs on 12 VDC, and comes with an AC adapter. I was thinking about
using one (or more, with different sized drills) with a homebrew CNC
machine to drill PC boards.
I took a look at google images for his model and the dimmer really is
just a dimmer ... providing they sell brushes kits (2) for his model,
the principle was ok from the first post; plug it right to the input.
If the person who originally posted the question still follows the
discussion; it is strongly suggested that you do NOT use the tool wired
that way for too long as the motor will overheat and break (or some of
its internals will melt down)... take it as a temporary fix only.