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Motorized Variac question . . .



Original poster: "Mccauley, Daniel H by way of Terry Fritz <twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>


I bought a used 120VAC, 20A motorized variac which I plan on using in my
power controller.  The motor runs off of 12VDC.  Just had a few questions as
I have not dealt with these motorized variacs before:

1.  I assume if I put +12VDC/Gnd into the motor for one direction and
Gnd/+12VDC into the motor for the opposite direction?  Is this correct????

2.  Do these motorized variacs have mechanical limits on them, or do I risk
damaging the variac and/or motor if I continue to run the motor once a
variac limit has been met???

Thanks

Dan