Re: Motorized Variac question . . .

["Tesla list" <tesla-at-pupman-dot-com>]

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
<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
>

Hi Dan...

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.

Scot D

>