Light control relay circuit


Posted on Mar 28, 2007

As a photoelectric switch with photoresistor circuit, the sensitivity is very high, as shown for the light control relay. At low illumination, VT nonconductive; when there is l


Light control relay circuit
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ight of a certain illumination, photoresistor resistance becomes smaller, VT sufficient base current conduction, resulting in a large collector current, so that relay.




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