> Look at the attached files, it's a schemes from 2 sites , look at the > capacitors mounted on the negative rail. > which one is correct or I miss something here? in which order should be the > capacitors on the negative rail? All capcitors in both drawings seem to be shown correctly. The + side is always toward the more positive voltage. Everything seems right. What specifically is the problem? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.