QVA21314

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Optical Sensors - Photointerrupters - Slot Type - Transistor Output

A photointerrupter is an optical sensor designed to detect interruptions to a beam of light. It is most commonly used in industry to detect the presence of objects and trigger an associated event. The QVA21314 is an example of a slot type photointerrupter with transistor outputs. In this article, the application field and the working principle of the QVA21314 will be discussed.

Application Field

The QVA21314 is widely used in a variety of industrial applications, including packaging machines, motor controls, and home appliances. The device is also suitable for use in safety-critical applications, as it is designed to detect the presence of objects quickly and accurately. Furthermore, due to its small size and efficient operation, it is well-suited for use in confined spaces and mobile applications.

The QVA21314 is designed to detect the presence of objects, detect their movement, as well as sense the size of objects entering its sensing area. This makes it a very useful tool in an industrial setting, as objects can be detected and tracked easily and with very little effort.

Working Principle

The QVA21314 features an internal photo-diode and a transistor output for detection. The photo-diode is placed in between two reflectors, which form the slot type structure of the device. When an object passes between the two reflectors, the amount of light the photo-diode can sense is reduced. This reduction in light triggers the transistor output, alerting the system of the presence of the object.

The QVA21314 is designed to detect objects with sizes ranging from 0.1mm to 10mm. It is engineered to respond quickly and accurately to objects entering the sensing area, which makes it highly suitable for a variety of industrial applications. The device also features an automatic reset function, allowing it to reset itself without the need for any external intervention.

Conclusion

The QVA21314 is a slot type photointerrupter with transistor outputs and is widely used in various industrial applications. It is designed to detect the presence of objects quickly and accurately, and is suitable for use in confined spaces and mobile applications. The device is engineered to respond quickly to objects entering its sensing area, and features an automatic reset function. This makes it a very useful tool in an industrial setting.

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