Automatic Night Lamp
The circuit given here automatically switches ON lights in your home as soon as the sun sets and also switches OFF the lights on sun rise.
This circuit uses IC555, LDR, 0-9 Volt transformer and IC AN7808. When light falls on the LDR then its resistance decreases which increases input supply of IC 555 by which high voltage appears on its output pin. Hence, the relay stops functioning by which the connected bulb is automatically switched OFF. When light stops falling on LDR then reverse process will take place and bulb is automatically switched ON.
The circuit given here automatically switches ON lights in your home as soon as the sun sets and also switches OFF the lights on sun rise.
This circuit uses IC555, LDR, 0-9 Volt transformer and IC AN7808. When light falls on the LDR then its resistance decreases which increases input supply of IC 555 by which high voltage appears on its output pin. Hence, the relay stops functioning by which the connected bulb is automatically switched OFF. When light stops falling on LDR then reverse process will take place and bulb is automatically switched ON.
Thx for the circuit sir
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