Question

Many street lights are automatically switched on by relay mechanism when light intensity falls what are input transducer in this system?

Answer 1

The controlling of street lights, make a light sensor circuit outdoor lights, a few indoor home appliances, and so on are usually maintained and operated manually on several occasions. This is not only risky but also results in wastage of power with the negligence of personnel or unusual circumstances in controlling these electrical appliances on and off. Hence, (based on the requirement) we can utilize the light sensor circuit for automatic switching of the loads based on daylight’s intensity by using a light sensor. In this article, we discuss in brief about how to make a light sensor circuit and its working operation.