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Re: Motorized Variac question . . .
Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bigfoo39-at-telocity-dot-com>
Tesla list wrote:
>Original poster: "Mccauley, Daniel H by way of Terry Fritz
>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???
normally the assembly has a set of micro switches that turn off the
"directionality" of the wiring to the motor. See if there are 2
microswitches involved in the construction.