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<p>So true. The pedal section on one organ I have is all single
transistor oscillators. It used a TOG of sorts, comprised of
individually tuned oscillators, but they used 5 transistors each.
Tuning was done with a coil slug.<br>
</p>
<p>Mike<br>
</p>
<br>
<div class="moz-cite-prefix">On 11/15/2017 7:59 PM, David Manley
wrote:<br>
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cite="mid:a8212f50-e6a8-3d40-2a2b-16fd1e880fc3@sonic.net">
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<div class="moz-cite-prefix">On 11/15/17 12:17 PM, Donald Tillman
wrote:<br>
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cite="mid:B5D71CE3-5D00-40F6-ADFC-B8FEC0240B7A@till.com">
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<div class="">On Nov 15, 2017, at 11:49 AM, bbob <<a
href="mailto:fluxmonk@gmail.com" class=""
moz-do-not-send="true">fluxmonk@gmail.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div dir="ltr" class="">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....</div>
</div>
</blockquote>
<div><br class="">
</div>
Oh good grief, that's old as the hills. :-)</div>
<div><br class="">
</div>
<div>It was probably in the data sheet for the original 40106.</div>
<div><br class="">
</div>
<div>But before that, it was probably in the data sheet for the
first CMOS Schmitt Trigger.</div>
<div><br class="">
</div>
<div>And before that, astable multivibrators were featured in
the very first CMOS application notes.</div>
<div><br class="">
</div>
<div>Check out the 1979 RCA COS/MOS manual; it has a whole
chapter on multivibrators.</div>
<div><br class="">
</div>
<div> <a
href="https://archive.org/details/RcaCosmosIntegratedCircuitsManual"
class="" moz-do-not-send="true">https://archive.org/details/RcaCosmosIntegratedCircuitsManual</a></div>
<div><br class="">
</div>
<div> -- Don</div>
<div><span style="font-family: Monaco; font-size: 11px; orphans:
2; widows: 2;" class="">--</span></div>
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normal; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
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break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class=""><span
class="Apple-style-span" style="border-collapse:
separate; border-spacing: 0px;">
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-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;" class=""><span
class="Apple-style-span"
style="border-collapse: separate; color:
rgb(0, 0, 0); font-variant: normal;
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class="">
<div class=""><font class="" face="Monaco"><span
style="font-size: 11px;" class="">Donald
Tillman, </span></font><span
style="font-size: 11px; font-family:
Monaco;" class="">Palo Alto, California</span></div>
<div class=""><span style="font-size: 11px;
font-family: Monaco;" class=""><a
href="http://www.till.com" class=""
moz-do-not-send="true">http://www.till.com</a></span></div>
<br>
</div>
</span></div>
</span></div>
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</blockquote>
Gotta love those old manuals and what was in them.<br>
<br>
Also go look in any of the old combo organs - they're packed full
of *transistor* based astable multivibrators.<br>
<br>
-Dave<font face="Monaco"><br>
</font> <br>
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