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Mini SGTC - Miniature spark gap Tesla coil

     This is a smaller version of the previous Tesla coil. It is also operated from the 20kV switch mode power supply, but it would also use the smalled supply of about 5 - 20kV for example with IHVT (high voltage transformer from and old CRT TV set or monitor). The spark gap is also used in the previous Tesla coil. The primary coil has 3 turns, and secondary has 160 turns wire diameter of 0.3 mm wound on the box from from the photographic film. Capacitor is a homemade 1.5 nF. This Tesla coil is, despite its small size, quite impressive.

     !!! WARNING !!! Tesla coil is an extremely dangerous device! Its supply voltage is deadly! Without knowledge of the principles of working with high voltage, you can not construct it. Tesla coil causes a broadband radio frequency interference. Electromagnetic radiation can damage electronic devices or storage media. The spark gap produces ozone (O 3) and other toxic gases, they have to be ventilated! Spark gap emits UV radiation. Current at ignition discharge of up to several kiloampers. Capacitor can remain charged even after shutdown. The device is very noisy and can damage hearing. Everything you do at your own risk! For any injury or damage I do not take any responsibility.

The schematic of the spark gap Tesla coil.

The Tesla coil primary waveform (simplified).

Miniature Tesla coil in operation.

With added capacity

Once more my Tesla coil.

The entire device

The secondary.