<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8">Nice project. <div><br></div><div>Or a mechanical version </div><div><br></div><div><img alt="IMG_3460.jpeg" src="cid:11E580DE-670D-4C26-B818-F5160705B2D9"><br><div><br></div><div>I got the parts list from Rob Archer. </div><div><br><div dir="ltr"><div>David</div>
<p class="p1"><span class="s1" style="background-color: rgba(255, 255, 255, 0);">Good friends are the rare jewels of life, difficult to find and impossible to replace!!</span></p></div><div dir="ltr"><br><blockquote type="cite">On Jan 13, 2023, at 11:59 AM, JOHN POWELL <mike.powell@comcast.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<div style="font-size:12pt;font-family:helvetica,arial,sans-serif;color:#333333;" class="default-style"> <span style="font-family: helvetica; font-size: 12pt;">Here's a status update on a project I've been working on approximately forever. This is the current incarnation of a digital to synchro interface. It is intended for use with simple synchro receiver style gauges, as opposed to more complex instruments incorporating servo loops.</span>
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<div style="font-size:12pt;font-family:helvetica,arial,sans-serif;color:#333333;" class="default-style"> <span style="font-family: helvetica; font-size: 12pt;"><div><DTS420.jpg></div><br></span>
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<div style="font-size:12pt;font-family:helvetica,arial,sans-serif;color:#333333;" class="default-style"> <span style="font-family: helvetica; font-size: 12pt;">This version uses low cost class-D audio power amplifiers to drive the synchro. It does not require a 400Hz power source. It operates at about 40% of the spec synchro voltages which seems to work just fine. I just received some transformers that might be useful if higher voltages are needed or if transformer isolation is desired. It can be operated at frequencies below 400Hz which should increase synchro torque.</span>
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<div style="font-size:12pt;font-family:helvetica,arial,sans-serif;color:#333333;" class="default-style"> <span style="font-family: helvetica; font-size: 12pt;">Interfacing is through the Nano's USB port of through a CAN Bus module. </span>
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<div style="font-size:12pt;font-family:helvetica,arial,sans-serif;color:#333333;" class="default-style"> <span style="font-family: helvetica; font-size: 12pt;">Cost containment and parts availability are design goals for this version so there are lots of simple, cheap parts rather than a few complex $$$ parts.</span>
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