QVB11124

Optical Sensors - Photointerrupters - Slot Type - Transistor Output

QVB11124 is a slot-type photointerrupter whose output are transistor output type. It has a high forward current handling capability and low DC output current saturation. The photointerrupter is an optical sensor which is composed of an infrared LED and an NPN output phototransistor. It works by emitting an infrared light from the LED. When the LED is blocked by an external source, the output signal level would change to reflect this state.

The application fields for the QVB11124 photointerrupter include: Industrial automation, Security systems, Air conditioning systems, Automated logistical systems, Manufacturing, Robotics, Medical equipment, Automated teller machines (ATMs), and other home appliances.

Working Principle of QVB11124

The QVB11124 works by emitting and receiving infrared light. The emitted light is detected by an NPN output phototransistor, and signal level is output depending on the blockage of the infrared LED. In other words, when the infrared LED is blocked, the output signal level is triggered, and when the infrared LED is unblocked, the output signal level is reset.

In order to achieve better results, the optical axes should be aligned precisely in the photointerrupter. This is to ensure that the infrared LED is in line with the phototransistor when the position of the photointerrupter is in its working condition. Moreover, the gap between the two should also be within practical range in order to maximise the sensitivity to the light.

One of the advantages of the QVB11124 is that it consumes low power. This is because it consists of an infrared LED and an NPN output phototransistor. With its low power consumption, it can be powered on for long durations without any issues. Additionally, the QVB11124 is also characterized with long life expectancy due to its minimal heat generation.

Conclusion

QVB11124 is a slot-type photointerrupter whose output are transistor output type. It has a wide range of applications such as industrial automation, security systems, manufacturing, robotics, medical equipment, air-conditioners and other home appliances. Its working principle is based on the infrared LED emitting and receiving infrared light which is then detected by an NPN output phototransistor to output the signals accordingly. Additionally, the QVB11124 is characterized with low power consumption and high life expectancy.