CNY17-2S

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Optoisolators are electrical devices that provide electrical insulation of one circuit from another, by providing electrical isolation between two normally conducting electrical circuits. The CNY17-2S specific optoisolator series belongs to the Transistor, Photovoltaic Output class. Essentially, a light-emitting diode (LED) is combined with a phototransistor, and separated with an opaque housing. The LED is powered by the ‘input’ circuit of the optoisolator, while the phototransistor is triggered by the light of the LED in the ‘output’ circuit. This isolation allows for two electrically different circuits to interact without risk of electrical shock or damage to either circuit. Most optoisolators have protection against high input voltage spikes, leading to improved reliability.

The CNY17-2S optoisolator series finds application in a variety of computer-related and communication-related tasks, primarily due to its good output-to-input isolation. This series features a 6V LED that offers a good trade-off between voltage, current and optical irradiance. Some typical applications for CNY17-2S devices include interfacing to a variety of logic levels, line isolation as well as isolation for communication signals.

The operating principle of the optoisolator CNY17-2S is simple. An electrical voltage is applied to the LED, which lights up and triggers the phototransistor located on the other side of the housing. The phototransistor is designed to provide high current gain in the dark, and is increases even further when the LED is energized. As previously mentioned, the optoisolator is designed such that the LED and phototransistor will not interact with each other electrically, providing a strong clear optical signal path between the two circuits.

In summary, the CNY17-2S optoisolator series offer reliable, high quality, and cost effective isolation between two circuits. It finds application in many computer related and communication related tasks, due to its good output-to-input isolation. The operating principle is simple, and is based on the principle of optically guided signal transmission between two electrically isolated circuits, using an LED and a phototransistor.

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