5_HOUR_RAMP

Published:2009/7/23 22:41:00 Author:Jessie | From:SeekIC

Switches S1 and S2 give ramp periods of 100 to 4,000 sec. Changing C to 10 mid increases period to 20,000 sec. For 5-hour period, C must be 10-mfd low-leakage capacitor. R1 calibrates ramp amp litude and R2 calibrates period.-R. Chapman Period of Sawtooth Ramp Extends to 5 Hours, Electronics, 39:13, p 78.



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