> I have changed to the LM324 and everything is working wonderful. The only problem is that it is a Quad chip (14 pins). Does anybody know an equivalent single version (8 pins)? The LM358 is a dual version of the LM324 and is in an 8 pin package. RM -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body