<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">There are also quite a few blogs that do decapping and photographing of the die inside. Might be interesting if they are interested to see if it’s a fake or not.<div class=""><br class=""></div><div class="">My personal favorite, Ken Shirriff: <a href="http://www.righto.com" class="">http://www.righto.com</a></div><div class="">Zeptobars: <a href="https://zeptobars.com/en/" class="">https://zeptobars.com/en/</a></div><div class=""><br class=""></div><div class="">Ben</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 17 Sep 2021, at 22:23, David G Dixon via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div dir="ltr" align="left" class=""><span class="438570320-17092021">I'm tempted to dig those
shitty chips out of the trash and mail them to you, to see if
you fare any better, given that I'm such a noob (with 13 years of
experience designing millions of dollars worth of successful synth
modules).</span></div>
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<div dir="ltr" align="left" class=""><font size="2" face="Tahoma" class=""><b class="">From:</b> bbob
[<a href="mailto:fluxmonk@gmail.com" class="">mailto:fluxmonk@gmail.com</a>] <br class=""><b class="">Sent:</b> Friday, September 17, 2021 12:10
PM<br class=""><b class="">To:</b> David G Dixon<br class=""><b class="">Cc:</b> synth-diy mailing
list<br class=""><b class="">Subject:</b> Re: [sdiy] Issue with CD4024 Ripple
Counter<br class=""></font><br class=""></div>
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<div dir="ltr" class="">lots of designers have used CD4000 series CMOS in
SDIY circuits successfully. they have their place if used properly,
and their limitations (like every technology). would be a shame if a
newcomer were to be scared off of perfectly good parts just because you couldn't
get it to work in your application.
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<div class="">bbob drake</div></div><br class="">
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<div dir="ltr" class="gmail_attr">On Fri, Sep 17, 2021 at 2:52 PM David G Dixon via
Synth-diy <<a href="mailto:synth-diy@synth-diy.org" class="">synth-diy@synth-diy.org</a>>
wrote:<br class=""></div>
<blockquote style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote" type="cite">So, I went to the lab and set up a little breadboard.
I put 4024 on it,<br class="">used my +15V and 0V rails to power it (yes, I decoupled
with 104), and I<br class="">also set up a TL072 as a comparator driven by a
triangle-wave LFO. I sent<br class="">the output of the comparator through a
diode to have it go just between 0V<br class="">and +15V. I tried clocking two
CD4024BEs, two CD4024BCNs, and one<br class="">MC14024BCP. The CD4024BCNs didn't
even work. The CD4024BEs gave me some<br class="">really hashy looking
outputs. The MC14024BCP worked perfectly. Then I<br class="">tested them in
an ASR, with similar results.<br class=""><br class="">So, I threw all of the CD4024s into the
trash. Unfortunately, I only have<br class="">one MC14024B. I'm going to
buy more, cuz they work well, without any<br class="">issues.<br class=""><br class="">Lesson learned, I
guess. I'm just not sure what the lesson is, other than<br class="">"don't use
CD4XXX chips" or at least ones with edge-driven inputs.<br class="">Argghh!!! Why
can't this stuff just work? It's a miracle that we aren't<br class="">still
living in caves, wearing skins and hunting sabre-tooth tigers
with<br class="">sticks.<br class=""><br class="">_______________________________________________<br class="">Synth-diy
mailing list<br class=""><a href="mailto:Synth-diy@synth-diy.org" target="_blank" class="">Synth-diy@synth-diy.org</a><br class=""><a href="http://synth-diy.org/mailman/listinfo/synth-diy" rel="noreferrer" target="_blank" class="">http://synth-diy.org/mailman/listinfo/synth-diy</a><br class="">Selling
or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank" class="">marketplace@synth-diy.org</a><br class=""></blockquote></div></div>
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