<div dir="ltr">The mechanical TV in the museum has a variable resistor to tweak the speed of the disk. Once you see a good picture you can enable a synchronization circuit to control the disk speed.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jul 3, 2020 at 11:18 AM Randall Snow via Thursday <<a href="mailto:thursday@newsm.org">thursday@newsm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Very neat stuff Len.  It seems so incredibly simple.  I am intrigued by the shunt switch in the motor speed circuit.  They have the variable resistor to set motor speed and a simple shorting of another resistor to speed it up temporarily for alignment with the source.  You have to love the elegance of old time simplicity!  This goes a long way toward us getting one working someday too.  </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jul 2, 2020 at 9:46 PM Len Arzoomanian via Thursday <<a href="mailto:thursday@newsm.org" target="_blank">thursday@newsm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div>Thought these might be two articles we can use with our Mechanical TV 
display by Rhode Islander Charles N Kraus.</div>
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<div>In 1928 Kraus, just 20 years old, built and demonstrated a Television set 
at the CeCo plant in Providence.</div>
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<div>September 9, 1928</div>
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<div><a title="http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember9_1928.jpg" href="http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember9_1928.jpg" target="_blank">http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember9_1928.jpg</a></div>
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<div>September 23, 1928</div>
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<div><a title="http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember23_1928_4.jpg" href="http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember23_1928_4.jpg" target="_blank">http://www.61thriftpower.com/riradio/images/ProvidenceJournalSeptember23_1928_4.jpg</a></div>
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<div><a href="http://www.rhodeislandradio.org/kraus.shtml" target="_blank">http://www.rhodeislandradio.org/kraus.shtml</a></div>
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<div>Len</div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><font size="4">Randy Snow</font><div><br></div><div><a href="http://www.snowfindings.com" target="_blank">Snow Findings Company</a><br></div><div><a href="http://www.lovements.com" target="_blank">Lovements.com</a><br></div><div><a href="http://www.newsm.org" target="_blank">New England Wireless and Steam Museum</a><br></div><div><br></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature">Michael Thompson</div>