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OPB872N55TXV – Optical Sensors – Photointerrupters – Slot Type – Transistor Output

Optical sensors – photointerrupters – slot type – transistor output, also known as OPB872N55TXV, are a type of optical sensor based on transistors. These sensors are commonly used in industrial and consumer applications. The sensor utilizes infrared light emitted when a logic-level output switching transistor is closed, or when a photo-interrupter is connected to the output terminal. These sensors are designed to have high-sensitivity and provide sensor feedback over a wide-range of voltages and frequencies. The transistor output provides a logic level output signal that can be used to control a variety of mechanical or electrical devices.

The OPB872N55TXV is a high-sensitivity photo interrupter with an internal transistor output. This type of photointerrupter is a 2-pin device and utilizes a pair of infrared LEDs and a single phototransistor for sensing. The photo interrupter has a built-in logic-level output switching transistor and a connection terminal for connecting to other devices. The LED emits light when a logic-level signal is applied to the output terminal. The phototransistor senses the infrared light from the LED and converts it into a corresponding electric signal, which then switches the output transistor on or off.

The OPB872N55TXV photointerrupter has a very wide range of applications, from automotive and industrial applications to consumer electronic products. It is usually used to detect the presence of objects in an area or to monitor the motion of objects. It can be used as a general purpose sensor in automation systems, as a proximity switch in industrial applications, or as a proximity switch in home and office automation systems. The output signal can be used to control relays, motors, and valves, or to activate alarms or automatic door locks.

The working principle of OPB872N55TXV is straightforward. When the logic-level output switching transistor is closed, the infrared LED emits light. This light is detected by the phototransistor and converted to an electric signal. Depending on whether the signal is positive or negative, the output transistor will be closed or opened respectively. Whenever the output transistor is closed, the logic-level output signal from the phototransistor is sufficient to close the relay and activate the device.

In conclusion, OPB872N55TXV is a high-sensitivity photointerrupter that can be used in a variety of applications, from industrial automation systems to consumer electronic products. Its working principle is simple and consists of an LED emitting light and a phototransistor detecting it. Depending on the signal received from the phototransistor, the output transistor will be either closed or opened, allowing the relay to be closed and the device to be activated.

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