Simple Ir Sensor Circuit Diagram. Here is the circuit. By using a transistor we can turn dirty analogue from the photodiode into clean analogue which the output led likes better.
Photo diode is connected in reverse bias inverting end of lm358 pin 2 is connected to the variable resistor to adjust the sensitivity of the sensor. By using a transistor we can turn dirty analogue from the photodiode into clean analogue which the output led likes better. A matched infrared emitter and detector pair is used in this circuit.
And non inverting end pin 3 is connected to the junction of photodiode and a resistor.
The figure below shows a project of a simple ir sensor circuit using lm324 ic. Ir led emits infrared light. Working of ir sensor. The figure below shows a project of a simple ir sensor circuit using lm324 ic.
