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Sep 1, 2017

Digital Optical Tachometer using GreenPAK

This tachometer can be used to measure the RPM (revolutions per minute) of a rotating object. In this application note, GreenPAK SLG46533V is used to design an optical contactless tachometer with the use of an infrared sensor. The measurement range of this tachometer is 1 - 9999 rpm, with an accuracy of 0.01%, this would give an accuracy of less than 1 rpm in all readings. This design can be modified to suit other requirements such as, changing the sensor sensitivity, changing the distance of measurement from the rotating object, etc.

Find out more at EDN China or read the English version of it on Silego's Application Notes page.