> There was a DIY article in Popular Electronics back in the mid '80's.
> I seem to recall it resurfacing as a commercial product
> in the early '90s but again, went nowhere.
> I expect that the patent has now expired so some entrepreneur is
> out to make a buck again.
>
> Today's PIC would make it dead easy to build and probably more
> efficient too.
>
> Robert


I suspect you're talking about a "GreenPlug". Looks like Electronics
Goldmine got hold of the leftover inventory, they're available here:
http://www.goldmine-elec-products.com/products.asp?dept=1054

ISTR, that they could help with a lightly loaded motor, but made no
difference with a properly sized motor.


-Denny


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