EL817(M)

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Optoisolators, also known as optocouplers, are electronic devices designed to isolate electrical circuits from one another in order to prevent electrical interference. The EL817(M) is an optoisolator with a transistor photocoupler and a photovoltaic output. It is usually used in digital systems, analog circuits and switching devices.

The two most common types of optoisolators are photocouplers and photovoltaic devices. In photocouplers, a light sensitive diode is used as the isolation layer between the input and output circuits. The light sensitive diode responds to the current flowing through the input circuit, and the light output generated can be used to control the output circuit. Photovoltaic optoisolators, on the other hand, feature an emitter and a photovoltaic cell. When current is applied to the emitter, it generates photons which are then absorbed by the photovoltaic cell, resulting in an output voltage.

The EL817(M) is designed specifically for use in industrial automation systems, and is used to provide a high degree of electrical insulation between the primary and secondary circuits. It features an MOSFET gate and built-in protection against static discharge and overvoltage, making it an ideal choice for protecting high-precision, sensitive electronic circuits. The EL817(M) is available in a wide variety of packages, making it suitable for different types of applications.

The EL817(M) works on the principle of a transistor photocoupler. The emitter of the optoisolator consists of an infrared LED, and the photovoltaic cell acts as the collector. When current flows through the LED, it produces infrared light which is then detected by the photovoltaic cell. This results in the generation of a voltage across the photovoltaic cell which is used to turn the MOSFET gate on and off, depending on the input signal. The MOSFET gate is then capable of driving the output circuit.

The EL817(M) is used in a variety of applications due to its ability to provide isolation between two circuits. It is ideal for use in circuits where high levels of precision are required, as it is capable of providing a great deal of electrical insulation between two or more circuits. It is also used in applications where noise levels have to be controlled, as it is capable of ensuring an isolated environment for the components of an electronic device.

In summary, the EL817(M) is an optoisolator which features a transistor photocoupler and a photovoltaic output. It is specifically designed to provide electrical isolation between the primary and secondary circuits, and is used in a variety of applications requiring high levels of precision and noise control. It works on the principle of a transistor photocoupler, and is available in a wide range of packages.

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