Well, I can certainly understand that, and in fact, I too, would like to use the inexpensive easily obtainable parts. That's why I asked :-) Also I don't want to have to dig into the specs so deeply until I learn what I need to look for :-) I'll start with 74 and NE. Thank you for explaining this to me, and I think this is a marvelous design :-)
Regards, John Giancarlo wrote: > > > Hi John, > > the AVALA project is an intelligent design. > > I like to comment to your question: > > "Do you know what the considerations were or why the difference in > parts." > > Not everywhere you have the possibility to purchase components like > in USA. Not all parts are available, particularly in East Europe. > > To give you an example, not everywhere in Europe you can get the > FST3253, while it maybe easier to get the FST3125. > > 74HCxxxx ICs are quite common and also the OPAs like NE5532 and NE5534 > Their price is also quite cheap. Forget all those low noise and wide > band OPAs with balanced input and output ... you will have to use 2x > NE5534 or 5532 amplifiers to make one OPA1632. > > In a few words ... you have to use what you can "easily" purchase > and few ... $$$$ needed for components. > > 73 > > Gian > I7SWX > > -- Regards, John ========================================================= email: [EMAIL PROTECTED] photos: http://www.flickr.com/photos/k5jhf/sets/ videos: http://www.youtube.com/profile?user=k5jhf files: http://briefcase.yahoo.com/[EMAIL PROTECTED] web page: http://www.geocities.com/[EMAIL PROTECTED] call sign: K5JHF =========================================================
