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<blockquote data-quote="T-J" data-source="post: 194287" data-attributes="member: 11480"><p><strong>[USER=10759]@dredre04[/USER]</strong></p><p></p><p>Useful information, except that you're forgetting the inclusion of Inductive Reactance of the wound wire. With 44 AWG enameled mag wire (which is what I used), ~250 ohms works out to ~36.55 m of <em>linear </em>wire, but after wound into the spider coil, only ~26.73 m is needed to get the same ~250 ohms. For the first coil form, I simply overshot the estimate of how much I would need, then 'dialed it back', keeping track of total length, until I arrived at the ~250 mark. This is using acrylic for the coil forms. My total impedance for the four coils, including connecting wire, came to ~995 ohms.</p></blockquote><p></p>
[QUOTE="T-J, post: 194287, member: 11480"] [B][USER=10759]@dredre04[/USER][/B] Useful information, except that you're forgetting the inclusion of Inductive Reactance of the wound wire. With 44 AWG enameled mag wire (which is what I used), ~250 ohms works out to ~36.55 m of [I]linear [/I]wire, but after wound into the spider coil, only ~26.73 m is needed to get the same ~250 ohms. For the first coil form, I simply overshot the estimate of how much I would need, then 'dialed it back', keeping track of total length, until I arrived at the ~250 mark. This is using acrylic for the coil forms. My total impedance for the four coils, including connecting wire, came to ~995 ohms. [/QUOTE]
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