Ldr is a Light Dependent Resistor is an electronics component of a resistor whose resistance value changes depending on the light.
How it works Ldr
How ldr works when ldr is not exposed to light ldr has a large resistance around 1M (100k) ohm, and when ldr is exposed to light ldr can have a small resistance of about 500ohm
Automatic switch with Ldr
The switch works during the night or when it is not exposed to light by means of the light sensor (ldr) and the way it flows.
Ldr switch circuit with LM741 ic
nput 12v circuit
List of components
10k ohm resistor
Potassium 100k ohm
Resistor 1k ohm
Sensor Ldr
20k ohm resistor
Ic LM741
Resistor 330ohm
Transistor BC548
Relay 12volt
THAT IS ALL AND THANK YOU
