I once did something really bad to a 555 chip. Not sure exactly what, but the top blew off giving me a good look at the grizzly inards, including where the wafer used to be.... The bang was almost as loud as the time I put 240v across a fluorscent starter just to see what would happen (I was 12 at the time).... Ben -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics