can you control an AC motor's speed?
The idea is that i would use a triac with the gate connected inline with a capacitor that was connected off of one of the ac mains line. the hope was that i could control how much of the waveform the triac chopped off by setting the capacitance of the capacitor to some level where about 3/4 of the way through the cycle it would stop triggering the triac cutting off the end of the wave.
is this a possible method of managing the speed of an ac motor or am i setting myself up for heartache and pain in the form of a dead motor?
UPDATE: i underestimated the max speed that the chop saw blades are capable of, there's a large enough margin of safety that i'm not worried about overspeeding at all, i will leave this question up because it was answered so concisely and maybe it will help someone else out on their journey. look forward to the chopsaw instructable!