[sdiy] LM741 substitute

[Magnus Danielson]

David G. Dixon wrote:
>> Also, some rare curcuits do depend on the internal layout of a
>> particular op-amp. Jürgen Haible reported on one such design in the
>> Synthi-A project he did. It's deep into the archives, but google should
>> help you.
> 
> I can't see any excuse for such a design.  Doesn't that just defeat the
> whole point of opamps?
> 

No, not in its context, when it was designed back in early 70thies, this 
was the way to get improved performance. These days it is much easier to 
get an opamp to match the performance, but if you repair one of these 
you need to be careful because of this peculiarity.

A design doesn't change just because better components arrive on the scene.

So there is an excuse for such a design and the designers does not have 
to excuse themselfs.

Cheers,
Magnus