LOCKOUT_CIRCUIT_

Published:2009/7/14 1:33:00 Author:May | From:SeekIC

This circuit is used in contests,games,etc When a contestant presses one of the buttons,an SCR triggers,lighting the associated LED and preventing anyone else from actuating the system .U2 and U3 form a warble tone generator, while U4 and U5 provide time delay.



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