EXPOSURE_TIMER

Published:2009/7/21 4:13:00 Author:Jessie | From:SeekIC

Uses thyratron to stop relay chatter. Gives long time delays with relatively small capacitance. Ordinary volume control covers complete timing range. Circuit is backwards relay, in which coil is energized except during timing interval. Relay pulls in at 10 ma and drops out at 6 ma.-J. Markus and V. Zeluff, Handbook of Industrial Electronic Control Circuits, McGraw-Hill, N.Y., 1956, p 291.



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