How to Make Tesla Coil - Small Spark Gap Tesla Coil

Published at : 23 Dec 2025

How to make a mini/small spark gap Tesla Coil, including the design (using JavaTC), making/building and tuning of the Tesla coil.

For the JavaTC calculator go to:
http://www.classictesla.com/java/javatc/javatc.html

For the calculator I used to find the length of wire for the coil, go to the following page and click on "Helical Coil":
http://deepfriedneon.com/tesla_frame6.html

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See also:

Small Spark Gap Tesla Coil
https://www.youtube.com/watch?v=vemF7p0cbHU

How to Make Capacitors for Tesla Coil (Small SGTC)
https://www.youtube.com/watch?v=iV7Irwaqe3w&list=PLFsZmHTZL-zmfXxstlxuJgRE9bOGobEVu

How to Make Spiral Primary Coil for Tesla Coil (Small SGTC)
https://www.youtube.com/watch?v=UWVUEIhpF6w&list=PLFsZmHTZL-zmfXxstlxuJgRE9bOGobEVu

The Cube - How to Make High Voltage Power Supply w Flyback/Builtin Diodes
https://www.youtube.com/watch?v=-KFhBVfpfDw

How to Make Wireless Transmission of Electricity/Joule Thief
https://www.youtube.com/watch?v=31Rxi8JMIys&index=3&list=PLFsZmHTZL-zmfXxstlxuJgRE9bOGobEVu

My webpage about this Tesla coil is at:
http://rimstar.org/science_electronics_projects/tesla_coil_spark_gap_small.htm

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