MEASURING_THRESHOLDS

Published:2009/6/29 2:23:00 Author:May | From:SeekIC

Upper and lower thresholds of noninverting comparator under test (A1) are read on DVM at end of capacitor charge and discharge cycles initiated by S1 and S2. With C1 discharged, relay L1 is energized. Closing S1 allows C1 to charge toward VCC. When upper threshold is reached, relay drops out and meter is read. Closing S2 starts discharge cycle which stops at lower threshold. Reverse relay connections when testing inverting comparator.—E. S. Papanicolaou, Comparator is Part of its Own Measuring System, EON Magazine, Aug. 5, 1974, p 76.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Amplifier_Circuit/MEASURING_THRESHOLDS.html

Print this Page | Comments | Reading(3)