Series static gap

A type of spark gap in which the arc is spread out over multiple conductors, distributing the heat, hot ions and voltage.

Series static gap
Figure 1. Series static gap

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Spark gap

In its simplest form, a spark gap is nothing more than two electrodes with some space in between through which an electric spark passes when the voltage in a circuit reaches a high enough level.

Nikola Tesla developed this concept further and came up with several ingenious spark gap designs, using different types of materials, quenching and discharge mediums.