Practical Quad Photo-Detector Circuit

Published:2013/6/6 20:32:00 Author:muriel | Keyword: Practical Quad Photo-Detector Circuit | From:SeekIC

The next circuit is for a practical 4 photo-detector circuit using an LM339 Quad comparator IC. Although phototransistors are shown, photocells could also be used with the corresponding change in values for resistors R1 through R4. This circuit can also be used for infrared detector circuits as shown above. The values for resistors R7 through R10 can also be changed depending on the required LED current.



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