Path: utzoo!censor!geac!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!harrier.ukc.ac.uk!owl.ukc.ac.uk!abs From: abs@ukc.ac.uk (A.B.Smith) Newsgroups: sci.electronics Subject: 4739, 4136 op amp substitute - help needed in choosing Message-ID: <49@owl.ukc.ac.uk> Date: 21 Jan 91 11:14:18 GMT Organization: Computing Lab, University of Kent at Canterbury, UK. Lines: 18 Hi, I have a book called 'Electronic Projects for Musicians' and it uses the 4739 and 4136 op amps. I am having trouble finding a convenient suplier for these and am wondering how I go about choosing replacements. I am not interested in pin compatability (and using two chips for a dual op amp is not inconvenient). I have found other audio op amps that have lower noise characteristics, can I just replace the chips with these. What I don't want to do is mess around with resistor and capacitor values (as you can see I can only manage to build the projects, I know nothing of analogue electronics!). Many thanks, Andrew.