Digital electronic watch calibrator (CD4518, CD4011)

Published:2013/1/25 1:44:00 Author:Ecco | Keyword: Digital , electronic watch calibrator | From:SeekIC

Quartz digital electronic watches have high timing accuracy, and accuracy calibration is required in the production or after repairing. The dedicated calibration instrument is expensive, and it is not suitable for amateur. You can use a homemade single CMOS digital circuit, it is cheap and applicable The following homemade digital electronic table calibrator is shown as figure. IC4 ~ IC9 use seven-segment decoder driver circuit CD4543; IC10, IC11 use CD4011, IC12 selects four - two -input NOR gate CD4001.



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