>> The certain timer chip deserves it's own day...25hrs? Nah, just >> kidding...very >> popular and a good preformer all round. Not all round. The bipolar version has some nasty features. Large supply rail spike at switching due to shoot through being one. The capacitor charge/discharge arrangement partially sharing the same component path, which is common by definition to all variants is also less than ideal. >>> > Don't forget tomorrow will be the armistice day when we remember >>> > all of those electronic designs that were complete failures >>> > because they included that certain timer chip. The Swedes (and some military) no doubt also have special days for the dual version this coming Thursday and the quad version this coming Saturday. RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist