6N139#320

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Optoisolators rely on electronic components to function and protect systems from disasters. Common components used in optoisolators are diodes, transistors, and photovoltaic cells. The 6N139#320 optoisolator is one such device that uses a combination of all three components. The 6N139#320 is a transistor-photovoltaic output, opto-isolator, designed to provide electrical isolation up to 5000Vrms. Utilizing a design similar to common Darlington transistor pairs, this optoisolator is able to accurately transfer analog signals across a wide range of AC and DC voltages.

The 6N139#320 optoisolator consists of a phototransistor, photodiode, and resistor connected in the conventional Darlington configuration. This configuration creates a small capacitor that operates as the input transducer. When light is incident on the phototransistor, it switches the opto-isolator’s output, allowing the output transistor to turn on. The collector and emitter of the output transistor can then be used as the opto-isolator’s output.

The 6N139#320 can be used in various applications where electrical isolation is vitally important, such as power and data converters, servo systems, secure digital devices, and resistance bridges. In addition, it is useful in medical and isolated signal measurement equipment. In industrial applications, the component is often used in the interface between data acquisition systems and controllers, as a security device to ensure devices are not affected by noise or electromagnetic interference. In switch mode power supplies, the 6N139#320optotriac can be used to regulate the output voltage by controlling the current that is switched between the primary and secondary windings.

The 6N139#320 is also used in a variety of consumer electronics, such as digital cameras, computers, and televisions. In digital cameras, it can be used to separate the signal from the sensor to the image sensor. This ensures that the image sensor is not affected by the movement of the camera shutter. In videoconferencing systems, it can be used as an isolator between the video and audio systems to ensure that audio signals do not interfere with the video signals.

The 6N139#320 optoisolator works on principles of photoconductive transduction. Its photosensitive component, usually the photodiode, is capable of detecting incident light. The incoming light is converted into an electrical signal which triggers the transistor switch. When the transistor switch is activated, a high electrical current is allowed to pass through the optoisolator’s isolation barrier. This current creates a small voltage across the isolation barrier which can be transmitted across the barrier without any interference or disruption.

The 6N139#320 optoisolator is a useful tool for applications that require reliable electrical isolation and the ability to accurately transmit analog signals across wide ranges of AC and DC voltages. Its various features make it suitable for a broad range of industrial, consumer, and medical applications. Through its ability to isolate the primary circuit from EMF interference, it ensures a more reliable performance, safer user experience, and higher audio and video quality from connected equipment.

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