Night Light Sensor Circuit Diagram. The circuit shown in figure 2 is using a relay at its output and when light falls on the ldr it will activate the relay. The figures below are showing two different light sensor circuits.
This transformerless automatic light operated night light circuit is very simple and easy. But you can use the same principle to turn on bigger and brighter lights too. Here you have the circuit diagram of a simple night light on the left side you can observe the voltage divider that will control the mosfet by providing more than 3v on night making the led to light and less than 2v when is daytime turning the mosfet off and closing the led light the mosfet can be changed with a regular transistor but because the mosfet is different than a transistor we will gain some power consumption.
The light sensor circuit is an electronic circuit designed using light sensor ldr darlington pair relay diode and resistors which are connected as shown in the light sensor circuit diagram.
This is an automatic night light circuit without transformer operated by light using light sensor ldr light dependent resistor. This transformerless automatic light operated night light circuit is very simple and easy. Here you have the circuit diagram of a simple night light on the left side you can observe the voltage divider that will control the mosfet by providing more than 3v on night making the led to light and less than 2v when is daytime turning the mosfet off and closing the led light the mosfet can be changed with a regular transistor but because the mosfet is different than a transistor we will gain some power consumption. Here is a simple led night light circuit which can be used as a room night lamp.
