VOLTAGE_WINDOW_COMPARATOR

Published:2009/6/29 2:32:00 Author:May | From:SeekIC

Use of LM111 opamps minimizes number of components required to turn on green indicator Iamp when input voltage is between predetermined limits set by 2K pots. Similar circuit using 741 opamps requires total of 31 components. Improved eircuit draws only 120 nA from voltage level being monitored, and operates within 0.3% threshold level stability using single unregulated supply varying ±3 V from 28 V.—D. Priebe, Comparators Compared, EDN|EEE Magazine, Oct. 1, 1971, p 61,



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