I don't know much about circuitry but I'm interested in hooking up my barely crusher to a motor instead of using my drill and I came across this : http://www.brewheads.com/mill.php
I'm confused as to exactly what the purpose of the capacitor is?
I haven't done much circuitry building, but is it there to ease the strain on the motor when the switch is hit to go from one direction to the other? I know basically what a capacitor is, but just not why it's used in this setup.
Also, would it be possible to throw a dimmer switch in there to adjust the speed of the motor, or is there a better way to go about that?
Thanks for any info guys. Sorry if what I'm asking doesn't make much sense.