SFH 313 FA-2

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Optical sensors are used to detect levels of light, and one of the most commonly used type is the phototransistor, as it uses light to detect changes in its characteristics and generate an output current. The SFH 313 FA-2 is a popular type of phototransistor used in various applications, and this article will cover the field of applications it is used in and the working principle behind it.

SFH 313 FA-2 Application Field

The SFH 313 FA-2 phototransistor is mainly used in sensor applications for detecting light and other radiations. It is used in infrared switching applications for switching ON or OFF elements like relays or motors. It is also used detection and counting of objects, such as in optical sorting machines, where the objects to be sorted are detected by the SFH 313 FA-2. It can also be used in safety applications where the ambient light is monitored by the sensor, such as in monitored fire sprinkler systems that detect the presence of smoke particles in the air.

The SFH 313 FA-2 is also used in infrared communications for remote control applications such as operating TV remotes. It is used for wireless data transmission and in infrared barriers. It can also be used in sensing applications involving temperature measurement, particularly for industrial and medical use.

Working Principle

SFH 313 FA-2 phototransistors work by converting light or other electromagnetic radiation into an electrical current. This process is accomplished by means of the photovoltaic effect, which is the process of converting light into electrical current. When light hits the SFH 313 FA-2, it causes the electrons in the semiconductor material to become excited, and they create electrical current.

The current created by the phototransistor can be used to control or measure other elements, or it can be used to transmit signals wirelessly. For example, when the current is passed through a diode, it can be used to switch an electrical element on or off. The current can also be used to measure changes in the environment, such as the amount of light or temperature that is present in a specific area.

The SFH 313 FA-2 phototransistor is used in a wide variety of applications because of its ability to detect light and other frequencies of electromagnetic radiation. It is a relatively low-cost, reliable solution for many applications, and it has a wide range of uses. From safety applications to infrared sensors, its range of applications makes it a popular choice for many industries.

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