> Having learned my electronics units many years ago and now > getting back to > it, I am puzzled over the unit of capacitance, the nF. I know > uF and pF but > nF is new to me. Could someone please explain nF to me? It is the logarithmic mean of pF and uF. for more enlightment google "micro nano pico", for instance http://www.ucs.louisiana.edu/~gha3782/units.html 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