Oscilloscope_calibrator_using_an_LM3909_chip

Published:2009/7/19 20:25:00 Author:Jessie | From:SeekIC

Oscilloscope calibrator using an LM3909 chip. The output is a clean rectangular wave that is exactly 1 volt peak to peak. The rectangular wave is approximately 1.5 ms on and 5.5 ms off. Battery life from a 1.5-volt D-cell is approximately 500 hours (courtesy National Semiconductor Corporation).



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