Portable_oscilloscope_calibrator

Published:2009/7/25 3:46:00 Author:Jessie | From:SeekIC

This circuit allows a quick check of oscilloscope time-base and vertical calibration. The circuit can be built into a small hand-held box and powered by a 12.5-V battery, as shown. The 30-kΩ resistor should be trimmed for a precise (15 Hz) 1-kHz output using a frequency counter. Accuracy of the 0.1-V, 1-V, and 5-V outputs depends on adjustment of the 2-kΩ pot, and the precision of the fixed resistors.



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