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| Figure 8-14 (con't) (b) De-ion arc quencher: details of contact assembly. |

| 8-16), the insulation adjacent to and between the grids becomes instantly deionized, that is, it is no longer a conducting path. The voltage existing between the grids is not sufficient to re-establish the current flow, and the arc is extinguished, usually in about two or three cycles (as compared with anywhere from six to twenty cycles for other types). |

| Figure 8-16 Points at which voltage is zero. |

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