[sdiy] 40106 astable multivibrator - origins

[mark verbos]

It’s extra fun to compare the internals of a ripple counter in this book to the schematic of the sequencer in the Buchla Music Easel. 


Mark



> On Nov 15, 2017, at 9:17 PM, Donald Tillman <don at till.com> wrote:
> 
> 
>> On Nov 15, 2017, at 11:49 AM, bbob <fluxmonk at gmail.com <mailto: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....
> 
> Oh good grief, that's old as the hills.  :-)
> 
> It was probably in the data sheet for the original 40106.
> 
> But before that, it was probably in the data sheet for the first CMOS Schmitt Trigger.
> 
> And before that, astable multivibrators were featured in the very first CMOS application notes.
> 
> Check out the 1979 RCA COS/MOS manual; it has a whole chapter on multivibrators.
> 
>     https://archive.org/details/RcaCosmosIntegratedCircuitsManual <https://archive.org/details/RcaCosmosIntegratedCircuitsManual>
> 
>   -- Don
> --
> Donald Tillman, Palo Alto, California
> http://www.till.com <http://www.till.com/>
> 
> 
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20171116/0956aaab/attachment.htm>