5_V_AT_75_mA

Published:2009/7/15 21:09:00 Author:Jessie | From:SeekIC

Circuit uses single pot with standard opamp to ad just output voltage and simultaneously set current of 6.2-V zener at optimum value for temperature stability. With some opamps, emitter-follower may be needed at opamp output to supply necessary zener current. Technique eliminates need for separate zener current adjustment or permits use of lower-cost zener.-K. Hanna, Single Control Adjusts Voltage Reference, EDN Magazine, June 5, 1976, p 117.



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