[sdiy] Filters, LM13600 etc.

[Karl Dalen]

 --- Ray Wilson <raywilson at comcast.net> skrev: > LM13700s and LM13600 are
still pretty much a standard item. Try the
> suppliers on my pages:

I remember that i saw the 13600 in an ad from RCA from the mid seventies!
Anyway it seams that many manufacturers did their copy of the chip.
I have in my box here XR13600,LM13600/13700,NJM13600,NE5517,
CA13600, SG13600, could that be Signetics? Huh!!

KD

> From: "David Reichert" <dreichert at sympatico.ca>

> > Ray,
> >
> > I'd like to build a circuit something like this but I'm finding the
> > LM13700s hard to source. Do you perhaps know of a reliable source?
> >
> > Would I be correct in assuming that replacing these ICs with CA3080s
> and
> > using simple Op-Amp buffers would be a futile idea?
> >
> > Thanks,
> > Dave


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