IR sensor work on the principal in which IR LED emits IR radiation and Photodiode sense that IR radiation. Photodiode resistance changes according to the amount of IR radiation falling on it, hence ...

By using this Circuit, we can increase the range of emitted IR radiation up to 100cm. It means we can increase the IR transmitting distance multiple times using this Long Range IR Transmitter circuit.

The interruption counter described here uses an infrared (IR) sensor that can sense a particular modulated frequency of infrared beam. A small transmitter circuit employing an IR LED is used to emit ...

IR Proximity Detector Circuit. The signals sensed by the phototransistor of the sensor are amplified by transistor pre-amplifier T2. These are further fed to a power amplifier based on IC LM386 to ...

Car Parking Guard Block Diagram: Here, The IR sensor will detect the obstacle with in 100cm, if there is any obstacle it will sense and give information to the tone detector which will enable the ...

The IR LED is connected in forward bias in the sensor module. The LED starts emitting radiations when the battery is switched on and the photodiode detects the reflected radiations, whose output goes ...

Central to the design of the PULSE pendant is the infrared sensor unit (U1 in the diagram) that provides a high (~3 V) output signal to pin 3 by default, and drops low (~1 V) when the LED detector (D1 ...

Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing mechanism. At the heart of the circuit is a PIR sensor module SB0061. SB0061 is a ...