Photo Couple Reversible Counting Display Circuit

Published:2011/9/8 1:49:00 Author:Sue | Keyword: Photo Couple, Reversible, Counting Display | From:SeekIC

    The photo couple reversible counting display circuit uses photo couple devices as reversible counter which is made of optical sensor. It can count the devices with different operating direction by addition or substraction automatically. As seen in the figure, it is suitable to count the automatical continuous producted devices. In the circuit, the photo couple device is reflecting photo coupler. Infrared LEDs and photosensitive triode are connected at the angle of 35°, and the intersection point is 5mm from the photo coupler. When it is working, if the infrared LED's infrared ray is blocked by the thing forward, the infrared ray will be reflected back and be received by the photosensitive triode which will make the photosensitive triode connected.



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