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250,000 Volt Table Top Tesla Coil (Kit)

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Calculated at checkout

Product Description


Produces 8-12" Visible Lightning-Like Discharges. Both the kit and assembled unit include an 8" toroid and wound coil (so you don't have to do any winding). Excellent Science Project. Easy to build. Fully adjustable.

This is a kit with plans and all parts included, requiring assembly.
It is also available fully assembled and ready to use.
Or as plans (paper or downloadable versions), with parts and assembly required.


This is a spark driven Tesla coil generating highly visual and audible sparks into open air without a return contact.

The unit operates from a standard wall outlet requiring less than two amps. The transformer is current limited to 60 ma and center point grounded.

The tesla coil is easily tabletop operable and is a two-level assembly consisting of a top and bottom section. The top supports the vertical mounted secondary output coil and the flat Archimedean spiraled primary along with tunable clip lead. The bottom supports the transformer, capacitor and spark gap assembly. A metal control panel is connected to earth ground along with the secondary return minimizing any dangerous shock hazards.

The spark gap uses two pure tungsten electrodes rarely requiring cleaning or dressing. Hardware is all brass where required, with the primary coil being a hybrid between copper tubing and a heavy insulated wire.

The kit version contains all parts to complete the unit, including a pre-wound and fully prepped secondary coil, and an 8 x 2" toroidal terminal which greatly adds to the performance and overall appearance of the completed system.

Assembly: Mostly mechanical assembly with some soldering.

Applications: use for a science project, special effects prop, research of high frequency electricity, and much more.

  • Transmit wireless energy
  • Materials glow, disintegrate, burn
  • ION motors, induction fields
  • Corona and St. Elmo's Fire
  • Amazing and spectacular special effects
  • Dimensions: 23" high x 12" sq. base, 25 pounds weight
BTC30 Instructions & Applications


TR220/110/300 - Optional 220V 300W Stepdown Transformer for overseas customers

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Product Reviews

  1. Very nice spark gap tesla coil 5 Star Review

    Posted by on 7th Jun 2021

    I am very happy with this coil. All of the components are good quality and it easily produces 10inch+ discharges with a 3/16" spacing on the spark gap. I would highly recommend this coil.