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First thought is do the 17V and 9V need to be isolated from each other ? You might be able to use a 9-0-9V transformer to get the 17V (as 18V) and a large capacitor(s) to level shift the 0V line and one of the 9Vs to create 9v.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Synth-diy <synth-diy-bounces@synth-diy.org> on behalf of Todd Sines via Synth-diy <synth-diy@synth-diy.org><br>
<b>Sent:</b> 06 February 2024 19:27<br>
<b>To:</b> AH <analogue@hyperreal.org>; synth-diy@synth-diy.org <synth-diy@synth-diy.org><br>
<b>Subject:</b> [sdiy] another year, another day, another transformer request</font>
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<div style="box-sizing:border-box">It's official, my 117/120V transformer has sh!t the bed in my 120V CMU-800R. </div>
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Last post was from last year, also on SDIY<br style="box-sizing:border-box">
<a href="https://synth-diy.org/pipermail/synth-diy/2023-February/131184.html" target="_blank" id="x_isPasted" rel="noopener noreferrer" style="box-sizing:border-box; color:rgb(76,140,246); text-decoration:none; background:transparent; outline:none">https://synth-diy.org/pipermail/synth-diy/2023-February/131184.html</a></div>
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<div style="box-sizing:border-box">No doubt, I *would* like to buy a few torroidal transformers from Florian, but then I'll want the VCM, module and the SQ-3P module, and it will rise up to several hundred
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€ </span>before I'm done.</div>
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<div style="box-sizing:border-box">In the meantime, I'm looking for a dual tap transformer -- AC120V in, 17V and 9V out. I don't see any of these on Syntaur, Sam. </div>
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<div style="box-sizing:border-box">Leaning towards this Hammond torroidal transformer:<br style="box-sizing:border-box">
<a target="_blank" rel="noopener noreferrer" href="https://www.hammfg.com/electronics/transformers/power/1182" id="x_isPasted" style="box-sizing:border-box; color:rgb(76,140,246); text-decoration:none; background:transparent; outline:none">https://www.hammfg.com/electronics/transformers/power/1182</a><br style="box-sizing:border-box">
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Specifically, <br style="box-sizing:border-box">
<a href="https://www.hammfg.com/part/1182Q9" target="_blank" id="x_isPasted" rel="noopener noreferrer" style="box-sizing:border-box; color:rgb(76,140,246); text-decoration:none; background:transparent; outline:none">https://www.hammfg.com/part/1182Q9</a><br style="box-sizing:border-box">
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Are there by chance some cheaper, faster, or even Amazon equivalents?</div>
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<div style="box-sizing:border-box">PS. The reason for the CMU: With a Beatnic.jp CMU800-MIDI converter, it can also function as a MIDI/DIN Sync converter, plus 8-channel MIDI-CV converter, a pile of chip-tune style square wave oscs, a low-rent 606 drum module,
and I've tapped the supplies to drive my System 100M off it to boot. And I have two -- 1 220V, 1 120V.<br style="box-sizing:border-box">
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Todd</div>
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