Small Spark Gap Tesla Coil
Since this was my first one, it was not built fancy and neatly at first. I built this one in less than 5 hours. I used the parts I had available. It generates 1 to 2 inch long discharges. You also can create a plasma globe using either a regular incandescent light bulb with purple plasma from the argon gas used or a neon-filled bulb for bright orange plasma.
Primary: 2 turns of 16AWG wire
Secondary: About 520 turns, 12 inches in length from top to bottom, 24AWG magnet wire
Spark Gap: 2mm gap from 2 pieces of metal
Capacitor: 6500pF 4200v
Close-up of spark gap
Spark gap in operation
1-inch discharges to the air
2-inch arcs to a screwdriver.
Plasma globe from an incandescent light bulb.
The final version was enclosed in a small metal case.
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