Hi 2 all again how should I select the proper caps for filtering? not the voltage, I had my lesson :-) I mean what the proper value, I don't want to put overkill caps cause I have a small room problem. are they any exact calculation for it or it try & error case? Regards Tal Bejerano AMC - ISRAEL -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu