LOOSE_GROUND_FLASHER

Published:2009/7/14 23:43:00 Author:Jessie | From:SeekIC

Uses ordinary neon lamp in series with silicon diode, with lamp normally dark. Gives warning by flashing if ground wire is accidentally or purposely disconnected from chassis of oscilloscope or other test instrument,-R. H. Troughton, Earth Warning Indicator, Wireless World, April 1977, p 62.



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