Build a Universal Coil Winder

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Coils and the inductance they provide are almost always needed whenever you assemble or experiment with electrical circuits. How to get the correct coil is another matter, but now much easier, thanks to this great design from Dave Gingery, which you can make quite simply. It will produce most types of coil,including “honeycomb” ones, simply and accurately. Interesting project, which delivers the results. All drawings, plus some assembly illustrations. Softbound. Published by the author.