A device for protection of electrical networks from surges of high voltage utilising spark gaps

摘要

Multiple gaps are provided by conductive fingers 1 to 8 connected to the main tracks 9 and 10 of a printed circuit. When a high voltage surge occurs across the main tracks 9 and 10, a spark will cross one of the gaps 11 to 14 and thus not damage the network itself. The fingers however do suffer damage. The preferred device shown is to provide continued protection without interruption of the main tracks, even when the fingers have been quite seriously damaged, by inclining the parallel fingers 1 to 8, and by connecting the fingers to the main tracks 9 and 10 via secondary tracks 19 and 20. IMAGE