Infrared Sensor Ir Sensor Circuit Diagram. A typical ir sensing circuit is shown below. This circuit is mainly used for obstacle detection using an ir led.
Infrared detector circuit circuit diagram here is a very simple infrared detector circuit which can be used to detect infrared light. H ere is the circuit diagram of an infrared motion detector that can be used to sense intrusions. This circuit will use an op amp to amplify the photodiodes signal a buzzer is connected to the output of the op amp but that can be modified and replaced with another component circuit.
Infra red rays reflected from a static object will be in one phase and the rays reflected from a moving object will be in another phase.
For npn bc547 transistor is used whereas for pnp bc557 transistor is used. This circuit is mainly used for obstacle detection using an ir led. The circuit uses this principle to sense the motion. For npn bc547 transistor is used whereas for pnp bc557 transistor is used.
