L1 ( the primary inductor coil) may consist of a pancake, 5-8 turns of any magnet wire approx. 22AWG.  The inner diameter of the first most inner winding should not touch the L2 (1/8 inch gap all the way around is acceptable), and there should be a small gap between the subsequent windings of the L1.  A small piece of cardboard can serve as the base of the pancake; use small slivers of electrical tape to maintain separation of the windings as you progress around the doughnut, from the center, outward.

L1- primary coil with plastic coating

L1- primary coil with plastic coating

For a more permanent solution, consider wrapping the entire L1 in electrical tape, or explore the possibility of a plasti-dip type coating, or other poly coating.

The primary coil may also may also consist of a more heavily insulated wire, wrapped tightly around the L2, using only a single layer of turns.

  4 comments for “Primary

  1. valleyweather
    June 7, 2013 at 8:21 pm

    Hey guys, thanks for the fast shipment. I cannot get the DVD to load and play, using anything. Any tips? Thanks.

    • admin
      June 9, 2013 at 11:33 pm

      Try VLC media player. Also, on some machines auto play did not work when we ran tests. Use the DVD software and load the file from within it.

  2. Larry1
    October 13, 2013 at 1:17 am

    hav there been a Tesla Coil driven by the TeslaTronics circuit that had a primary wraped cylinder style stead of Pancake Style?

    • admin
      November 15, 2013 at 11:05 pm

      Yes. The pancake seems to work better with its smaller coupling region, but a cylinder coil will work as well too.

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