OPB668T

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OPB668T Application field and Working Principle

The OPB668T is an advanced optoelectronic switch which is suitable for both high density, high speed applications or harsh environments. The OPB668T infrared optical device is a slot type, Logic Output Photointerrupter, using a detector diode and IRED emitter system. It is a small and compact photo interrupter switch with a package size of only 2.7 mm by 1.2 mm.

Applications

The OPB668T is designed for use in a variety of applications, including: Industrial Automation Systems (pick and place systems, machine vision, robotics, etc.), Home Automation Systems (security systems, smart homes, etc.), Automotive Electronics (sensors, motors, power regulators, etc.), Medical Devices (catheters, medical test equipment, etc.) and Data Acquisition systems (camera systems, data loggers, etc.).

Working Principle

When an object moves through the OPB668T\'s light beam, it interrupts the beam and generates a change in the sensing signal. This change then triggers an output signal which can be used to identify the object\'s presence. The internal circuitry of the photointerrupter also features adjustable sensitivity, allowing it to detect both large and small objects. When an object goes through the slot, a black strip is detected and it produces a logic zero voltage, when no object is present and the beam is uninterrupted, a logic one voltage is outputted.

Additionally, the photointerrupter has an internal LED indicator, which provides a visual indication of the emitter output. This is useful in debugging and trouble-shooting applications. The LED also has the ability to indicate when the sensor is operating properly or when there is a possible problem.

Conclusion

The OPB668T is a versatile, optoelectronic switch which is suitable for a variety of applications, including industrial automation, medical devices and data acquisition. Its small size and adjustable sensitivity make it a great choice for high density and high speed applications.

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