Film Canister Capacitors


6769_100121036671012_100000193470961_521_4265928_nby: Norm Barstow

This is a guide on how to make a Leyden Jar that makes awesome sparks with materials you may even find in your house. It’s inexpensive, basically harmless and fun.

Here is the list of materials you will need:

  • An empty film canister with lid.  These are available at Educational Innovations.
  • Multistrand insulated wire; eg. type HPN Heater Cord
  • Single conductor/solid un-insulated wire, about 1.5 mm in diameter (16 gauge copper wire).
  • Some aluminum or copper foil. (NOTE: Any conductive foil will work. Copper foil is thicker and easier to work with than aluminum foil, but aluminum foil works. Heavy duty aluminum foil works best.
  • A bolt (10/24) with a round head that is shorter than the film canister’s height. Two nuts that fit the screw.  Washer is optional.
  • Scotch tape.

Film canister Capacitors

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