>JD> stuff is really fussy, and will overheat with anything less
 >JD> than pure sine wave; I'd suspect that motors would be in that
 >JD> catagory.
 > 
 > Don't know why you suggest motors would be sensitive. My understand
 > is that they are not particularly sensitive, though they'll be less
 > efficient on modified sine.
That's what I mean. Motors like sine waves and may well overheat on square 
waves. Remember that most motors are designed to certain parameters and don't 
really have much headroom for non-standard operating conditions.
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