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(C) Jeff Behary 2007
Kinraide Experiments: "Extension-less Point - Limit-less Plane Spark Gap"
Isometric view: Extension-less point to the left, Limit-less plane to the right
Left: View from point side, Right: View from plane side
Close-up of the two tungsten inlaid brass electrodes. And Mejla.
Tungsten components are polished 1/4" rod for the plane and sharpened 1/8" rod for the point.
Refractory material (Mica) is used to shield the extension-less point. The mica
helps to keep the discharge surface of the point to a minimum.
The mica is bolted to a piece of G10 phenolic. Many thanks to Brian Foley for several pieces of G10!
The only other material suitable would have been asbestos plate.
The point protrudes only a few thousandths of an inch. It is also made removable for sharpening.