[sdiy] 40106 astable multivibrator - origins

[Phillip Gallo]

Earliest reference to CMOS linear applications i can find is  Nationals
1973 App Note.   While AN-88 doesn't specifically call out a schmitt
trigger inverting buffer like the '106, the standard integrator config
depicts.
I  wouldn't be surprised if there's an earlier "Designer's Casebook" other
"Idea for Design" that demonstrates linear application of CMOS.

Don't know if oldest but 1979's Syncussion by Pearl  uses 3 CD4069 buffers
per VCO.   1 as integrator. 2 in series with feedback to build out a
schmitt buffer.

p


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On Mon, Nov 20, 2017 at 5:20 PM, Michael E Caloroso <
mec.forumreader at gmail.com> wrote:

> Buchla may had been the first to use CMOS.  He was always on the
> cutting edge of technology back then.
>
> Barring that, I'd guess ARP Omni.
>
> MC
>
> On 11/20/17, S Ridley <spridley1 at gmail.com> wrote:
> > I think RCA were the first to manufacture CMOS, so early RCA databooks
> > would be a good place to look.
> >
> > The 1973 databook:
> >
> > http://www.introni.it/pdf/RCA%20-%20CMOS%20Ic%20Databook%
> 20SSD%20250C%201973.pdf
> >
> > has a 40106 datasheet and an astable circuit.  The 40106 was near the end
> > of the list in this book, so I don't think you'd have to look very much
> > further back.  1972 perhaps?
> >
> >
> > I wonder which synth was first to use CMOS?
> >
> > Steve
> >
> >
> > On 15 November 2017 at 19:49, bbob <fluxmonk at gmail.com> wrote:
> >
> >> anybody know the origins or first publication of the 40106 astable
> >> multivibrator circuit?  i've found it in a 1992 intersil data sheet, but
> >> i
> >> think it's been around longer than that....
> >>
> >> bbob drake
> >>
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