Photoelectric control relay circuit
Source: InternetPublisher:containsmachine Keywords: Photoelectric relay circuit photoresistor Updated: 2020/09/07
Photoelectric control relay circuit
Shown is a photoelectrically controlled relay circuit . When there is no light, the resistance value of the photoresistor is high, the voltage of voltage comparator Ul
② pin is lower than ③ pin, ⑥ pin outputs high level, VT1 is turned on, and the relay operates (starts the lighting circuit).
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