Sensitive photoelectric receiver circuit diagram

Published:2011/8/3 2:40:00 Author:Rebekka | Keyword: Sensitive photoelectric receiver | From:SeekIC

The circuit phototransistor BPY62 isparallel with temperature compensation transistors BCY59. It constitutes a differential amplifier. Two tubes require the same type of product which are matching pairs. The sensitivity can be adjusted by 250KΩ potentiometer. The adjustment margin is 1:5 times. When the average output voltage is 10V, its corresponding light intensity is about 200lx. The adjustment of2.5KΩ potentiometer can calibrate the balance voltage between symmetry and DC.



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