ALARM_CONTROL

Published:2009/7/14 2:13:00 Author:May | From:SeekIC

Any input suitable for driving LED of optoisolator triggers triac for energizing load such as alarm gong. Transistors Q4 and Q5 of CA3096 array serve as comparator. Diode-connected transistor Q3, zener-connected transistor Q1, and 100-μF capacitor develop DC supply voltages from AC line.- Circuit ideas for RCA Linear ICs, RCA Solid State Division, Somerville, NJ, 1977, p 9.



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