The McTesla is small 1000 watt half bridge Tesla coil with 3D printed forms for the terminal, secondary and the enclosure.
The secondary is 5″ tall and 3′ in diameter at the bottom and 5″ in diameter at the top. I get larger arcs with the conical secondary than an equivalent cylindrical secondary…maybe an inch or so more spark.
See more in the video below and details in the Circuit Salad blog post here.
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