Optical Sensors - Photointerrupters - Slot Type - Transistor Output

The HOA0865-T55 is a high performance slot type Photointerrupter with transistor output that possesses numerous features and applications. Photointerrupters are optical-electronic components that detect objects passing through an optically encoded gap and output electronic signals. In this application, the HOA0865-T55 demonstrates its use case.

Applications

The HOA0865-T55 is employed as a sensor device in automation control, motor speed measurement, robot control, safety applications, and other related applications. Additionally, it offers a degree of accuracy and precision that is not achievable with conventional mechanical means.

Due to its compact size, the HOA0865-T55 is extensively used in communication systems, home appliances, and factories. It is also well suited for medical diagnostic devices, such as spectrophotometers. As a safety measure, it can be used to detect unknown objects in potential hazardous locations in order to prevent equipment damage or personnel injury.

Working Principle

The HOA0865-T55 functions based on optical principles, and is composed of an LED emitting visible light, and a photosensitive IC placed in close proximity. When an object passes through the gap, the light from the LED is interrupted, and the IC detects the interruption and outputs a signal in response.

The LED and IC are connected in the same case; the LED’s output wavelength compatible with the photosensitive IC’s input, allowing the device to detect optical interruption. The IC is integrated with the control circuit, power supply, drive circuit, and the transistor. The transistor output is a transistor type output suitable for driving relay and other load.

In addition to gap interruption detection, the HOA0865-T55 is designed to provide high speed responses. The response time is around 40µs, far faster than conventional mechanical methods, and can be adjusted with an AUX capacitor, allowing for great adaptability in various applications.

Conclusion

The HOA0865-T55 Photointerrupter with transistor output is a powerful and reliable optical-electronic component for a variety of applications, particularly in the area of automation control and safety. The IC’s high speed response and adjustable response time make it ideal for dynamic applications, and its small size makes it suitable for integration with communication systems, home appliances, and robotics.