Poor spider, not only are you shaking him, now you'r going to bake him. Little Miss Muffet sat on a tuffet, Eating her curds and whey. Along came a spider, Who sat down beside her. And frightened Miss Muffet away! Pookie ----- Original Message ----- From: "Olin Lathrop" To: "Microcontroller discussion list - Public." Sent: Monday, January 09, 2006 4:54 AM Subject: Re: [EE] Low-noise/vibration stepper motor driver > David VanHorn wrote: >> The difference between an op-amp configured to provide a voltage, and >> one configured to provide a current, is one resistor. >> Two LM-12 chips or similar would give you a butt-kickin analog drive >> with about +/- 35V compliance. >> Connect one side of the windings to ground, and drive the other side >> with a voltage to current converter made with the LM-12. >> >> Now you have no chopping products to worry about or get rid of, > > But you may have significant heat to get rid of. > > ****************************************************************** > Embed Inc, Littleton Massachusetts, (978) 742-9014. #1 PIC > consultant in 2004 program year. http://www.embedinc.com/products > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist