Have you tried Googling the " parts", model number, etc.=20 Many times there are parts readily available. If it happens to be a=20 Vita-mix, their plant is near here, and I would think they have most=20 everything available. On 2/21/2011 6:29 PM, Bob Blick wrote: > On Mon, 21 Feb 2011 17:46 -0500, "Dr Skip" wrote: > > =20 >> I'm repairing a friend's super-duper mega blender (brand name shall >> =20 > =20 >> Anyway, I can't get enough info to tell which type I should replace >> with. It seems to not be quite linear, but it jumps around so much and >> never does the same thing twice, so who knows. The question is, are >> there any designs that use or used an audio taper pot for triac (or >> maybe scr) speed control? >> =20 > Lamp dimmers have pots that are their own special taper which is not > linear or audio. > > Yours might also be a weird taper. > > You might be able to take a linear taper pot and modify its taper with > the addition of a resistor from wiper to one end. > > That might get you close to what you need. > > Cheerful regards, > > Bob > > =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .