LAB_GENERATOR_CALIBRATOR

Published:2009/7/21 1:39:00 Author:Jessie | From:SeekIC

Portable design operating from single flashlight D cell uses National LM3909 flasher IC to produce clean rectangular wave that can be adjusted to exactly 1 V. Pulse width is 1.5 ms and OFF interval between pulses is 5.5 ms. Useful for calibrating oscilloscopes and adjusting their probes. Article describes operation of circuit in detail, Current drain is low enough to give 500 h of operation.-P. Lefferts, Power-Miser Flasher IC Has Many Novel Applications, EDN Magazine, March 20, 1976, p 59-66.



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