OPB871P51

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Optical Sensors are devices which detect the presence of brightness or darkness in environment, and output the detected information as either an electrical signal or some kind of action depending on the specific application. Photointerrupters, or opto-interrupters, are a type of optical sensor which detect the interruption of a beam of light. Among these, slot type photointerrupters like the OPB871P51 have a slot mechanism which prevents light interference between the emitter and detector.

The OPB871P51 is a slot type photointerrupter with a transistor output, which is used in many operating applications. It typically operates at 5V voltage, and can be powered by AC, DC, or solar power, making it appropriate for a wide range of applications. The device has a detection range of 20mm, making it suitable for most mid-sized projects. It is also capable of detecting objects moving at speeds up to 10m/sec, allowing for quick response and accuracy. The device is small and has a low power consumption, which makes it an efficient option.

The ULN2003A driver IC is recommended for use with the OPB871P51. The integrated circuit is designed to drive a transistor output device like the OPB871P51. It is a medium-power driver capable of handling voltages up to 50V, and is available in standard DIP package. The ULN2003A simplifies the process of driving the OPB871P51, and ensures its reliability and stability. It also prevents problems due to high voltages, current overloads, and short circuits.

The working principle of the OPB871P51 is based on the interruption of a light beam by an object. Its output circuit consists of a light-emitting diode, a light-detecting diode, and a transistor. When an object interrupts the light beam, the light-detecting diode will be turned off, which in turn turns off the transistor. When the beam is not interrupted, the light-detecting diode will be turned on, activating the transistor. The output signal can be a high or low voltage level depending on the interruption or lack thereof.

The OPB871P51 can be used in a variety of applications. It is often used in operating machines like industrial robots, limit switches, and in door control systems. It can also be used in detecting presence for applications like counting, sorting, and positioning of products. Furthermore, it is often used in detection of objects in assembly lines.

In summary, the OPB871P51 is a slot type photointerrupter with transistor output. Its small size, low power requirement, and detection range makes it suitable for various operating applications. It is powered by AC, DC, or solar power, and is capable of detecting objects moving atspeeds up to 10m/sec. Its output circuit consists of a light-emitting diode, a light-detecting diode, and a transistor, which are connected to a ULN2003A driver IC. The OPB871P51 is used in various machine operating applications, detection of presence, and in detection of objects on assembly lines.

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