IR Infrared Led (Receiver + Transmitter) TCRT5000L

The TCRT5000 Infrared sensor mainly includes an IR Tx (transmitter) & and IR Rx (receiver). Here transmitter and receivers are Photodiode & a Phototransistor. Once the voltage supply is provided to the IR Tx unit then it immediately transmits & emits IR signals. Once these signals crash through an object, then the IR receiver gets the signals. Here the transmitter functions similar to a transistor, apart from the base terminal are excited through light.

The TCRT5000 IR sensor unit includes a coupled Photodiode & a Phototransistor in a single package. The photodiode (Tx) in this sensor includes two pins namely anode & cathode which are mainly used for generating infrared signals In the same way, the Phototransistor in this sensor includes two pins like emitter & collector. These two pins play a key role to read the infrared signal that is reproduced back.

This type of infrared sensor is mainly used to sense the existence of an object by using some specific programming; it can also measure the object distance ahead of it. However, the distance can be measured simply for a small range of objects due to environmental annoyance. So this sensor is useful if you want to measure the object’s distance ahead of it.

This sensor is either used as an analog/digital sensor. If we simply want to sense the existence of a target or object, then this sensor can be used as a digital sensor. If we want to measure the distance of the target then it is used as an analog sensor.

Pin Configuration

The pin configuration of the TCRT5000 IR sensor includes the following. This sensor includes an IR transmitter and IR receiver which include four pins totally which are discussed below.

• Anode: This is a positive pin of the infrared transmitter IR transmitter (Photo Diode)
• Cathode: This is a negative pin of the infrared transmitter IR transmitter (Photo Diode)
• Collector: This is the collector terminal of the IR receiver (Photo Transistor)
• Emitter: This is the emitter terminal of the IR receiver (Photo Transistor)