Science Technology

LadderHere’s a great new Instructable in the Make group on building a five foot tall Jacob’s ladder from Ewilhelm, he writes “This classic climbing arc completes any mad scientist’s dungeon. Don’t touch the electrodes: they’re at 12 kV! Get a neon sign transformer rated for 9 – 12 kV and 30 mA. Make sure it’s an old style, heavy coil transformer and not solid-state. The solid-state transformers won’t start the arc. I got a Transco 12 kV 30 mA transformer on Ebay for $35. It didn’t have a wall plug, so I wired one on.”… Link.

8 thoughts on “HOW TO – Build a five foot tall Jacob’s ladder

  1. This reminds me of a book my wife just got for me:

    Electronic Gadgets for the Evil Genius
    by Robert E. Iannini

    Very fun book! Details the cost, parts needed and how to assemble each project.

  2. I’ve built a few of these myself and the effect is impressive! If it wasn’t for the loud noise, the ozone, the RF hash, and the over heating electrodes I’d have one running all the time.

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