BPX 38-3

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Optical Sensors - Phototransistors have a wide range of application fields and BPX 38-3 is no exception. This device is a high voltage, integrated, semiconductor transducer that detects light irradiated to its active zone. It can be used to amplify or switch optical signals, and is configured as a phototransistor (PT).

The BPX 38-3 phototransistor consists of a base, an emitter, and a collector, which are typically fabricated on a single semiconductor piece, called a wafer. It is a diode-connected device, which means that it is configured so as to form a series-connected circuit. The emitter is connected to the base and the collector is connected to the emitter. This circuit configuration allows for electric current to be amplified or switched using the electric field generated by the base current.

The BPX 38-3 is capable of sensing light in a wide variety of applications, including telecommunications, biomedical, and security. This device is also considered a MEMS (Microelectromechanical Systems) device, as it is an integrated transducer that is built on a silicon wafer.

In terms of phototransistor working principle, the BPX 38-3 is based on the photo-conductive effect, which states that the conductance of a semiconductor varies with the wavelength of incident light. When light is irradiated on the active zone of the BPX 38-3, electrons are ejected from the semiconductor material and travel from the exposed base region to the collector. The electrons are then attracted back to the base, creating an electric field with a direction opposite of the electric field created by the base current. As a result, the electric field is amplified, and this amplified field is used to drive current through the circuit.

The BPX 38-3 has a wide range of applications. In telecommunications, it can be used to detect optical signals in telephone networks, allowing them to be amplified and transmitted more efficiently. In biomedical applications, it can be used to detect and respond to light signals from biological sources. Finally, in security systems, it can be used to detect and respond to intruder movements or to detect hidden objects.

In conclusion, the BPX 38-3 is a high voltage, integrated, semiconductor transducer that can be used to amplify or switch optical signals. It is based on the photo-conductive effect, and it can be used in a wide variety of applications in telecommunications, biomedical, and security systems.

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