Carl Denk wrote:
> I don't have a variac. It is clear on the input side, that the windings 
> are in a straight line, just like a center tap, but broken at the 
> center. Both windings have black to the left side, and red at the right 
> handed side. That makes the outers a black and red, with the center also 
> a black and red. For 220 it seems clear that I connect to outer red and 
> blacks to the power hot and neutral, and the center red and black to 
> each other. For 110, it seems that black and black, and red and red to 
> the power hot and neutral. This would go with the common way of doing 
> things.
> 
> Thanks for the thoughts. If I blow it, no big thing, it was cheap, came 
> along for the ride with some things I needed. :)
> 

To easily test without fear, use a lightbulb in the primary circuit.  Or 
drive it from a signal generator and watch the output on a scope. Or... 
lots of possibilities.
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist