> I think you need to test this... > My results indicate a longer startup time. You are probably forgetting that the +10V supply starts out at 5V, not at whatever the other side of the cap is tied to. The charge pump has to raise the voltage on the cap by 5V regardless of the total cap voltage. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body