Ldr Sensor Circuit. How the ldr circuit diagram works. A voltage supply is given to the load the required dc voltage of the ldr circuit is supplied from a bridge rectifier circuit or a battery.
This circuit changes the ac supply into a dc. This circuit detects light incident on the ldr and turns on led whenever the intensity of light is greater than a certain level. A photoresistor can be applied in light sensitive detector circuits and light and dark activated switching circuits.
Which turn led on when light is not falling on ldr and turn led off when light falling on ldr.
This circuit detects light incident on the ldr and turns on led whenever the intensity of light is greater than a certain level. It detects the quantity of light present in the environment and the results can be detected by the brightness of the led. A photoresistor can be applied in light sensitive detector circuits and light and dark activated switching circuits. This change in resistance of ldr detect by a circuit.
