0_20_V_CURRENT_LIMITING

Published:2009/7/17 5:00:00 Author:Jessie | From:SeekIC

Novel full-wave voltage doubler formed by diode bridge and C1-C2-C3 provides 39 V required by μA723 regulator whose output is continuously variable with R1. Initially, R2 is adjusted for minimumoutput voltage when R1 is maximum counterclockwise, to balance bridge R1-R2-R3-R4 when output voltage is zero. Value used for RSC determines short-circuit current. Raw DC supply provides separate 25 V for pass transistors. - L. Drake, Variable Voltage Power Supply Uses Minimum Components, EDN Magazine, Aug. 5, 1974,p 80 and 82.



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