secondarywind1_810_small.jpg (4098 bytes)
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The secondary structure of a tesla coil should be made of a substance of low loss. Materials such as polycarbonate (Lexan) or acrylic (Plexiglass) are appropriate. The coil form should be as thin as feasible, but must have enough strength to support the winding procedure and to sustain the Toroid terminal. A Tesla coil secondary has its own particular electrical makeup determined in part by the length of secondary. Like a tuning fork, it wants to vibrate at a particular frequency. The secondary is inductively energized by the primary coil. The secondary is four by 16.5 inch plexy form wound with AWG28 magnet wire on a sealed top and bottom with about 16 inches of winding. There is 1155 windings on this four inch secondary and a total of 1208 feet of wire.                        Tab on pictures to enlarge!