HOA1872-011

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Optical sensors are devices that convert light into electrical signals. One type of optical sensor is the photointerrupter, which includes slot-type transistors. The HOA1872-011 is a slot-type transistor output photointerrupter, and it has a variety of applications and a simple working principle.

Applications

The HOA1872-011 has a wide variety of applications, some of which include:

• Counting for non-contact operation and no mechanical wear
• Detection of movements in production processes
• Speed measurement and control of moving objects
• Position sensing and monitoring
• Positioning, timing, and synchronization control
• Security, access control, and safety systems applications

Working Principle

The HOA1872-011\'s working principle is simple. When the photointerrupter is illuminated by a light source, light passes through a series of transparent slots in the package. When something interrupts the light, such as a finger or other object, the photointerrupter detects the interruption and sends a signal to the transistor output. The signal is then processed to determine if the interruption is valid.

The HOA1872-011 has an operating voltage range of 4.5 VDC to 24 VDC. The output currents can range from 1 mA to 10 mA, and the output transistor can be saturated to provide a low impedance load. The photointerrupter can also detect light from infa-red LEDs, allowing it to be used with various light sources. Finally, it has a wide viewing angle, from 110 degrees to 140 degrees, depending on the wavelength of the light source.

Conclusion

The HOA1872-011 is a slot-type transistor output photointerrupter with a wide range of applications and a simple working principle. It is designed to detect standard LED light sources, as well as infrared LED light sources. It has a wide range of operating voltage and output current, and a wide viewing angle, making it suitable for a variety of applications.

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