Tom=E1s =D3 h=C9ilidhe wrote: > I understand diodes completely: Yeah, right. With that kind of attitude you'll never learn anything new. Do the experiment I talked about, noting the brightness at the different levels. I think a few details will surprise you. The intuition gained is something you won't get from any data sheet, and makes the distinction between paper learning and experience that is so important in real design situations. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist