Photoelectric relay circuit diagram
Source: InternetPublisher:刘德华河北分华 Keywords: Optoelectronics circuit diagram relay circuit Updated: 2020/10/28
This circuit is suitable for use as a grating switch and has high receiving sensitivity. The switching threshold of the circuit is 10lx. In order to adjust the unilluminated current, potentiometer R1 is connected to the circuit . When there is sufficient illumination on the phototransistor (minimum 10lx), the final transistor is turned on and the output voltage is about 19.5V.
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