> So what happens if you have a 1000 V potential across the LED, but > some sort of limiter that only allows a max of 1 mA to flow? The limiter has to cope with 1W (and 1kV). > And why is it that if you touch a 120 V source, you die - yet a 15000 > V static shock merely stings? What is the important difference between the 120V source and the 15kV static? -- Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist