> About the caps' I found that I use 16v instead of using 35v. > the transformer is what I have in my junk box, you know those who are packet > in plastic case the deliver about 40mA. I will buy 12vx2 tomorrow and check > again. > about the consumption: I didn't measure it but data say "6mA" it's a LM4558. Does that include the load? Probably not. > other problem I have is "hum" look like main 50hz. If your caps were getting warm, then they were drawing current, which would aggrevate the hum. I wouldn't chase that until the caps are right and the voltages look reasonable with no load. Then connect a known load, like a resistor, and see how much the supply droops and if anything gets hot. ***************************************************************** 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