Schematics Archive (II)

[Tony Clark]

> >    Well I might add that schematics with discontinued or obsoleted parts
> > are really not good designs to be building, even if you have the parts!
> > It would be far better to get a more updated design.
> 
> I see your point, but don't you think that such a site could be also used for
> maintenance of old gear ?

   Sure, that's half the reason why I have whole synthesizer service 
manuals on my site!  My argument for the statement I made about obsoleted 
parts was in reference to designs aimed for the DIY novice, as that is 
what this whole discussion has been centered around.
   Obviously there is definately a point to having data sheets for these 
obsolete parts (which I do add when I get the chance)!

> >    Datasheets are extremely easy to come by, in my experience.  I'm not
> > sure it will be a very productive effort to try to have a datasheet for
> > every critical part (there are a LOT of them!).
> 
> Are you sure ? Consider the Elektor Formant for instance : this whole modular
> (basic modules AND
> extensions) is based around 15 different ICs only, and a handful of 
> very common transistors.
> The amount of ICs for the Digisound modules might be similar (or even less).

   Mostly CEM stuff really.  Anyway, the point you make here is that many 
of the parts are common.  I.E. there are a ton of similar/equivilant 
parts.  I don't see a point in anyone maintaining datasheets for these 
kinds of things.
   I think that a more useful thing would be a good cross-reference sheet 
of compatible parts.  Then it should be fairly easy for someone to go to 
a manufacturers site and pull up a datasheet.

> Besides, a few yrs ago, Elektor has published a book that gathers the 
> datasheets that are supposed to be usefull to the average electronic 
> hobbyist. It features : 
>     - 85 linear ICs (audio and general purpose)
>     - 75 CMOS logic
>     - 90 TTL logic.

   Certainly a list like this (with cross-referenced compatible parts) 
would be worthwhile!

> (who wouldn't have to waste time looking for bits and pieces of info)...

   Heh, and here I wondered why we get so annoyed over on the AH list 
when people don't go search the archives first...

   Tony

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I can't drive (my Moog) 55!         |     The E-Music DIY Archive
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Tony Clark -- clark at andrews.edu     | aupe.phys.andrews.edu/diy_archive
http://aupe.phys.andrews.edu/~clark |     Contributions welcomed!
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