A useful looking appnote from Freescale, giving information on coil designs= and geometries used for wireless charging. http://www.freescale.com/files/microcontrollers/doc/app_note/AN4866.pdf --=20 Scanned by iCritical. --=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 .