REGULATOR_OVERLOAD

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

When output is shorted, germanium diode D1 turns on and draws current through R1, removing reference voltage across zener. Tr1 is then held off and turns Tr3 and Tr4 off to block load current. When short is removed, circuit recovers automatically.-D. E. Waddington Germanium Diode for Regulator Protection, Wireless World， March 1977, p 42.



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