HOA0891-N55

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Optical sensors, also known as optoelectronic sensors, are used to detect changes in the environment using a combination of light, optics and electronics. One of the most commonly used forms of optical sensing technology is photointerrupters. Photointerrupters are devices used to detect physical objects and interrupt an electromagnetic signal from a light source. Depending on the application, photointerrupters can be configured as either a slot type or a transistor output type. The HOA0891-N55 is an example of a slot type photointerrupter designed with transistor output.

The HOA0891-N55 is a slot type photointerrupter designed for use in a wide range of industrial applications including machinery, medical devices, automotive, security systems and automation. It consists of an infrared emitter and an NPN phototransistor housed in a four pin plastic package. The photointerrupter operates using a “slot-type” configuration, meaning that the sensor is built with a small gap between the emitter and receiver which allows objects to pass in between. When an object interrupts the gap, the sensor will detect the object and output the signal to the sensing circuit.

The HOA0891-N55 is designed to operate with a 5V power supply, making it well suited for use in industrial environments. The photointerrupter is designed to be used with a DC or AC signal, making it extremely flexible and versatile. The device features a high switching current (up to 100mA) and a wide sensing distance (up to 5mm). Additionally, the device features a high speed switching time (up to 400kHz) and a wide range of operating temperatures (-40C to +45C).

The working principle of the HOA0891-N55 is relatively simple. The device consists of an infrared LED emitter and a phototransistor receiver. When an object is passed between the emitter and receiver, the emitter will emit an invisible beam of infrared light, which is then detected by the receiver. The receiver then converts the received light signal into an electrical signal, which is sent to the output of the photointerrupter. This electrical signal can then be used to control other devices or circuits.

In summary, the HOA0891-N55 is a slot type photointerrupter designed with transistor output for use in a wide range of industrial applications. It features a 5V power supply, DC/AC signal compatibility, a high switching current, a wide sensing distance, a high speed switching time, and a wide operating temperature range. The working principle of the device is based on a simple circuit consisting of an infrared LED emitter and a phototransistor receiver, which convert an object passing between them into an electrical signal.

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