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2 Megavolt High Power Large Tesla Coil

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  • Power supply
  • Power supply
  • Detail of primary coil
  • Early experimental BTC70 with power supply in foreground
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Calculated at checkout

Product Description


Well-suited for museum displays, university research, laboratory studies, and the advanced hobbyist familiar with the use of high voltage. The complete BTC70 comes ready-to-use with all components: the power supply with transformers, chokes, and 20 feet of HV cable (to operate the coil from a safe distance); the base unit with capacitors and spark gaps; the fully-wound secondary coil; and the toroid. The coil stands over 6-½ feet high, and requires a dedicated 220vac 50amp single-phase 3-plug "utility" socket (not a standard 115V wall outlet like our other coils).

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


Shipping: the website shipping estimate is not accurate for this item. Please contact us by email or phone 603-673-4730 for an accurate shipping cost.


  • Advanced Project for High Voltage Research
  • Throws Electrical Discharges out to over 10 Feet
  • Spectacular Display of Natures Fireworks
  • Materials Testing
  • Air-Blown 4-Point Heavy 3/8" Tungsten Spark Gap
  • Size: 6.5' Height x 24" Square base
  • Power: 220vac 50amp single-phase
  • Shipped in 3 parts

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