04-04-2017, 03:06 PM
Principle and operation of the automatic street light controller
555 Timer IC is the main part of the circuit that functions as a comparator. All the operation of this circuit depends on the operation of the 555 timers Ic. To know more about 555 times IC read this article Working from 555 Timer IC. In this circuit pin, 3 produces output having only two high and low states. The output goes high when the activation pin is at a level below the 1/3 level of the supply voltage and the output goes down when the activation pin 2 is above 1/3 of the supply voltage. In this circuit pin, 4.6 and 8 are connected to the power supply. Here we use LDR to detect the presence of light that forms a potential divider circuit with the help of resistance of 1k ohms. LDR is a special type of resistance whose value depends on light. Read this article to find out how LDR works. The output of this divider circuit is given to the IC trigger pin of the timer 555.
555 Timer IC is the main part of the circuit that functions as a comparator. All the operation of this circuit depends on the operation of the 555 timers Ic. To know more about 555 times IC read this article Working from 555 Timer IC. In this circuit pin, 3 produces output having only two high and low states. The output goes high when the activation pin is at a level below the 1/3 level of the supply voltage and the output goes down when the activation pin 2 is above 1/3 of the supply voltage. In this circuit pin, 4.6 and 8 are connected to the power supply. Here we use LDR to detect the presence of light that forms a potential divider circuit with the help of resistance of 1k ohms. LDR is a special type of resistance whose value depends on light. Read this article to find out how LDR works. The output of this divider circuit is given to the IC trigger pin of the timer 555.
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