MOC81013S

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Optoisolators are useful components for preventing noise from one electrical circuit from interfering with the operation of another. The MOC81013S optoisolator is one of many optoisolators available, each with different application fields and working principles. This article will discuss the application field and working principle of the MOC81013S.

Application

The MOC81013S is primarily used in automotive electronics for the safe isolation of electronic signals. It is used to prevent noise from entering a sensitive electrical circuit. Some of the most common applications of it include: ignition system protection, surge protection, on-board computer system protection, power source protection, and wiring harness protection. It is also used for such applications as overvoltage and reverse-battery protection, as well as radiation-hardened applications.

Working Principle

At its core, the MOC81013S is an optoisolator. It uses a light-emitting diode (LED) to remotely activate a semiconductor transistor without direct physical contact. When an incoming electrical signal is applied to the LED, light is emitted. This light is then detected by the phototransistor. If the intensity of the light is sufficient, the phototransistor turns on, which in turn triggers the transistor to turn on. The resulting connection effectively isolates the two circuits, preventing the electrical noise from one circuit from interfering with the operation of the other.

The MOC81013S is designed for use in various automotive applications such as those listed above. It is available in several package variations, each tailored for a specific application. These packages provide superior protection from EMI, radiation, and electrical transients, allowing for improved signal integrity and enhanced system performance in adverse environments.

Conclusion

The MOC81013S is a powerful optoisolator, designed for automotive applications and capable of providing robust noise isolation. Its working principle is based on the use of a light-emitting diode and a phototransistor to trigger a transistor. This effectively isolates the two circuits, protecting one from noise created by the other. The MOC81013S is available in several package variations, allowing it to be tailored for specific applications and providing superior performance when compared to other optoisolators.

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