6N135W

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Optoisolators are devices used to provide galvanic isolation between different circuits, protecting against electrical overstress, voltage spikes, and other hazardous conditions. Galvanic isolation prevents the transmission of signals or power between two circuits while allowing them to impart information across the isolation barrier. The 6N135W is a type of optoisolator designed with a transistor, photovoltaic output for quick, reliable communication of analog or digital signals with high current rating. This document will firstly discuss the application field for the 6N135W, followed by an explanation of the working principle of the device.

Application Field

The 6N135W optoisolator is commonly used in a wide range of applications due to its reliability, isolation capability, and voltage compatibility. It is most commonly used in modules or systems that require high current switching, such as in audio-visual equipment, robotics, industrial motor control and data-acquisition systems, and instrumentation. Additionally, it is suitable for use in settings with high electromagnetic interference due to its reliable isolation features. The 6N135W optoisolator is also the preferred choice for applications requiring a bi-directional signal input compared to a uni-directional input, due to its photovoltaic transistor output type.

Working Principle

The basic working principle of the 6N135 photovoltaic optoisolator involves the transmission of signals across an optical link. The device consists of an LED or diode situated at one end that provides the light source while the other end contains a photo sensitive transistor which responds to that light signal. When the light signal is above a specified threshold, the photo transistor output switches “on”. The 6N135W optoisolator is then able to transmit the signal from the LED or diode to the photo transistor, providing a secure isolation between the two circuits. When the current in the LED is changed, the output of the phototransistor will also change accordingly depending on the magnitude of the current, fulfilling its function as a voltage-to-current amplifier. This transfer of data between the LED and the photo transistor allows the device to transfer signals across long distances with no loss of power, ensuring reliable data transfer.

The 6N135W optoisolator is a versatile device with a photovoltaic output, allowing it to be used in a wide variety of applications. Therefore, due to its reliable optoisolation, high current rating, and range of uses, it is a preferred choice for many projects. Additionally, its interfacing with other optoisolator circuits and its compatibility with multiple voltage levels adds to its appeal. With its reliable performance, the 6N135W optoisolator is a popular choice in projects involving isolation of electrical signals and analog or digital information transfer with no loss of power.

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