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<p class="x_MsoNormal">So, it looks like a pretty poor amplifier and there must be a cheaper way of generating 2<sup>nd</sup> harmonic distortion!</p>
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<p class="x_MsoNormal">Interesting though . . .thanks for the links</p>
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<p class="x_MsoNormal">Regards<br>
Colin</p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Chchrobotics <chchrobotics-bounces@lists.ourshack.com> on behalf of Volker Kuhlmann <list0570@paradise.net.nz><br>
<b>Sent:</b> Tuesday, November 21, 2017 10:23:59 AM<br>
<b>To:</b> Christchurch Robotics<br>
<b>Subject:</b> [chbot] New valve</font>
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<div class="PlainText">Anyone playing with valves? The ones with heating filament, lots of<br>
volts and even more heat?<br>
<br>
Seems like for the first time in decades someone has developed a new<br>
model, for audio enthusiasts.<br>
<a href="https://www.heise.de/make/meldung/NuTube-Projekt-mit-DesignSpark-PCB-3890567.html">https://www.heise.de/make/meldung/NuTube-Projekt-mit-DesignSpark-PCB-3890567.html</a><br>
<br>
Anode 5 - 80V, gain 5, cathode 0.7V (< 20mA?) - it's a modified VFD.<br>
<br>
datasheet, Korg model 6P1<br>
<a href="http://docs-europe.electrocomponents.com/webdocs/15db/0900766b815db1b5.pdf">http://docs-europe.electrocomponents.com/webdocs/15db/0900766b815db1b5.pdf</a><br>
(Nothing on their website korg.com)<br>
<br>
Available from RS for about 36EUR.<br>
<br>
Reference project:<br>
<a href="https://www.rs-online.com/designspark/design-of-a-korg-nutube-amplifier-part-1-tube-basics">https://www.rs-online.com/designspark/design-of-a-korg-nutube-amplifier-part-1-tube-basics</a><br>
<br>
Volker<br>
<br>
-- <br>
Volker Kuhlmann<br>
<a href="http://volker.top.geek.nz/">http://volker.top.geek.nz/</a> Please do not CC list postings to me.<br>
<br>
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