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DIY & Tutorials
DIY For Audio
Small 16 watt tube amplifier for desktop use
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<blockquote data-quote="Mars" data-source="post: 1116388" data-attributes="member: 817"><p>Hi Willem</p><p></p><p>Here is the winding plan I generated from Dissident Audio's published information:</p><p></p><p>I increased the stack marginally, since I only have 32mm and 40mm bobbins. So going with 40mm stack of EI96 laminations</p><p></p><p><img src="https://i.imgur.com/rd7vUjG.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Next I rolled one layer of secondary on the empty bobbin to check how many windings are needed to complete one layer. The published number of 97 windings was just a bit too tight, so I adjusted the number to 95 windings per layer.</p><p></p><p><img src="https://i.imgur.com/gHv6ASb.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I kept the primary windings total to published number, so the transformer impedance becomes 5000ohms:8ohms .</p><p></p><p>All this I entered into the OPT designer and got this design:</p><p></p><p><img src="https://i.imgur.com/QyuAY3b.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>With a primary inductance of 39 Henry, the -3dB roll off point on the bass side is 20 Hz.</p></blockquote><p></p>
[QUOTE="Mars, post: 1116388, member: 817"] Hi Willem Here is the winding plan I generated from Dissident Audio's published information: I increased the stack marginally, since I only have 32mm and 40mm bobbins. So going with 40mm stack of EI96 laminations [img]https://i.imgur.com/rd7vUjG.jpg[/img] Next I rolled one layer of secondary on the empty bobbin to check how many windings are needed to complete one layer. The published number of 97 windings was just a bit too tight, so I adjusted the number to 95 windings per layer. [img]https://i.imgur.com/gHv6ASb.jpg[/img] I kept the primary windings total to published number, so the transformer impedance becomes 5000ohms:8ohms . All this I entered into the OPT designer and got this design: [img]https://i.imgur.com/QyuAY3b.png[/img] With a primary inductance of 39 Henry, the -3dB roll off point on the bass side is 20 Hz. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Small 16 watt tube amplifier for desktop use
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