Medium Spark Gap Tesla Coil
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Specifications:
Primary: 11 turns of 1/4-inch copper tubing, about 0.2-inch spacing, tapped to about 8 turns.
Secondary: About 680 turns, 17" from top to bottom, #23 gauge magnet wire on 3-inch diameter PVC.
Spark Gap: Two 2"-long copper pipes spaced about 1/4 to 2/5 inches far apart.
Capacitor: MMC: One string of sixteen .15uF 3kV Cornell Dubilier capacitors, bought through Richardson Electronics. Overall capacity is about .0093 @ 48kV.
Input: 9kV 30mA
This is something you don't see often on a spark gap Tesla coil. This coil sometimes generates a single steady streamer about 1.5 feet long.
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