BASIC_MONO

Published:2009/7/1 20:11:00 Author:May | From:SeekIC

Opamp is normally in positive saturation because of negative voltage pro-vided by voltage divider R2-R3. When 2-V positive trigger pulse is applied to input, output of opamp swings into negative saturation but automatically returns to positive saturation after time interval determined by values used for C2 and R4. With R4 set at maximum resistance, this time is about 1 s. Increase size of C2 for longer time periods. Opamp can be 741 or equivalent.-R. Melen and H. Garland, Under-standing IC Operational Amplifiers, Howard W. Sams, Indianapolis, IN, 2nd Ed., 1978, p 120-121.



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