Hi Denny: The Microchip BLDC eval board drives the 3 phases with bipolar DC pulses, n= ot sine waves so probably will not work for=20 the 22,000 RPM motor (I think it's an induction motor, but can't find that = information in the manual). The Schneider Electric variable frequency drive looks very interesting. Bu= t their web page is very user hostile (only=20 works with WIN 8) and on WIN XP displays two overlapping pages and so links= don't work and no way to contact them to ask=20 questions, such as do you need 3-phase input on the unit that has 3-phase o= utput (that's what the manual shows). Mail_Attachment -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html http://www.prc68.com/I/DietNutrition.html --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .