<html>
<head>
<meta name="viewport" content="width=device-width">
<meta http-equiv="Content-Type" content="text/vnd.ui.insecure+html;charset=utf-8">
</head>
<body style="overflow-wrap:break-word; word-break: break-word;"><div class="mail_android_message" style="line-height: 1; padding: 0.5em">I think the <a href="https://passive-components.eu/dc-and-ac-bias-dependence-of-mlcc-capacitors-including-temperature-dependence">https://passive-components.eu/dc-and-ac-bias-dependence-of-mlcc-capacitors-including-temperature-dependence</a>/<br/><br/>article is great, and I agree with its findings. It doesn't say anything about C0G though. It's about X5R and X7R.<br/><br/>Justin </div><div class="mail_android_quote" style="line-height: 1; padding: 0.3em"><html><body>On 3/28/21, 12:50 PM cheater cheater <cheater00social@gmail.com> wrote:</body></html><blockquote class="gmail_quote" style="margin: 0.8ex 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Sorry, didn't finish reading - that's actually 5 authors, each of
<br> which has commendable industry experience. I don't think there's any
<br> reason to doubt their findings.
<br>
<br> On Sun, Mar 28, 2021 at 7:46 PM cheater cheater
<br> <cheater00social@gmail.com> wrote:
<br> >
<br> > I've seen other articles talking about exactly the same thing. It's a
<br> > well known issue with multilayer capacitors. Read the author's bio (at
<br> > the end of the article). Do you think this IEEE Fellow's obviously
<br> > meticulous research is just some crackpot fantasy?
<br> >
<br> > On Sun, Mar 28, 2021 at 7:32 PM Gordonjcp <gordonjcp@gjcp.net> wrote:
<br> > >
<br> > > On Sun, Mar 28, 2021 at 03:52:37PM +0200, cheater cheater wrote:
<br> > > > > On Mon, Jan 18, 2021 at 11:49 AM ColinMuirDorward <colindorward@gmail.com> wrote:
<br> > > > > In my 4pole 3320 BPF, the polypropylenes sound slightly better. The obvious difference is that at lower frequency settings, they go into self-oscillation more readily than the ceramics. To my biased ear, the ceramics make some small distortion perhaps, or for some reason add a slight edge to the sound. I did do a blind test using a 2pole 2164 SVF and the difference there is more noticeable than in any other filter I've tested. Here, the polys are a clear win. I want to use words like "liquid, juicy, lush" for the polys vs "bite, edge, grit" for the ceramics. However those are too strong words to describe a very subtle difference. I am waiting to find the right modern mono synth that I can do a capacitor "upgrade" on and test if it's possible to perceive a change in the sound in a factory-made unit. I have an uno synth on the way (was on sale for $135cad?!), perhaps I'll be lucky enough to find space inside that tiny case for four WIMAs.
<br> > > >
<br> > > > The sound quality you're talking is "roughness" and is measured in Aspers.
<br> > > >
<br> > > > Tiny capacitors have a very large voltage gradient across a very short
<br> > > > casing. They're probably self-modulating, i.e higher voltage means
<br> > > > less capacitance. Essentially self-filter-FM.
<br> > > >
<br> > > > Look at this article:
<br> > > > <a href="https://passive-components.eu/dc-and-ac-bias-dependence-of-mlcc-capacitors-including-temperature-dependence/">https://passive-components.eu/dc-and-ac-bias-dependence-of-mlcc-capacitors-including-temperature-dependence/</a>
<br> > > >
<br> > >
<br> > > Lots of pretty graphs, for sure.
<br> > >
<br> > > Has anyone attempted to reproduce these experiments?
<br> > >
<br> > > --
<br> > > Gordonjcp
<br> > > _______________________________________________
<br> > > Synth-diy mailing list
<br> > > Synth-diy@synth-diy.org
<br> > > <a href="http://synth-diy.org/mailman/listinfo/synth-diy">http://synth-diy.org/mailman/listinfo/synth-diy</a>
<br> > > Selling or trading? Use marketplace@synth-diy.org
<br>
<br> _______________________________________________
<br> Synth-diy mailing list
<br> Synth-diy@synth-diy.org
<br> <a href="http://synth-diy.org/mailman/listinfo/synth-diy">http://synth-diy.org/mailman/listinfo/synth-diy</a>
<br> Selling or trading? Use marketplace@synth-diy.org
<br>
</blockquote></div></body>
</html>