HOA0891-P55

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Optical sensors and photointerrupters are electronic components used to detect light and provide electrical signals when a light source passes through a slit. HOA0891-P55 is a type of slot type photointerrupter that is designed for reliable electrical isolation and easy operation. This device offers both common emitter and emitter follower output options, allowing for greater flexibility when designing photointerrupter applications. In this article, we’ll discuss the application field and working principle of HOA0891-P55.

Application Field

HOA0891-P55 is mainly used in applications such as lifting systems, security systems, vending machines, automatic doors, and automation machines. It is a versatile device that can be used for sensing the presence of an object and preventing its movement. Furthermore, HOA0891-P55 can be used for controlling electrical appliances, motor speed control, and more.

Working Principle

HOA0891-P55 works based on the principle of optical coupling. It consists of two components: a receiver module and a transmitter module. The transmitter module is composed of an infrared LED and a photo diode, while the receiver module is composed of a Zener diode and a phototransistor. The LED shines infrared light on the photo diode, which is then converted into electrical signals through the Zener diode. When the light is blocked, the phototransistor in the receiver module is not activated, and the output will be turned off.

The benefits of using HOA0891-P55 relate to its high sensitivity, wide operating voltage, and fast switching speed. It is a cost-effective solution for automation applications, and its compact size allows for easy integration into systems. Furthermore, it is resistant to ambient light interference, providing reliable performance in varied environmental conditions.

Conclusion

HOA0891-P55 is a reliable and economical slot type photointerrupter with a transistor output. Its versatility makes it an ideal choice for numerous applications, such as industrial control, elevators, security systems, and more. Its advantages include outstanding optical efficiency, high sensitivity, wide operating voltage, and fast switching speed. Its compact size also allows for easy integration into various systems, providing reliable performance in varying environmental conditions.

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