> > I suggested a generic "jelly bean" NPN transistor because these are dirt > > cheap and quite effective for this purpose. Just about any TO-92 small > > signal NPN should work fine for drive currents up to a few 100mA. I use > > 2N4401 for this sort of purpose, but there are lots of alternatives. > > Could you give an example of an IC that has 3 or 4 of these devices on it? No, these are discrete parts. Also, please fix your email settings to not insert a REPLY-TO address. That way the default reply address will be to the list. I just sent you a response and noticed too late that it was going only to you. That defeats the purpose of most people from whom you seek help. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics