EL817(S)(D)(TU)

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Optoisolators are specially designed components that separate two circuits by using optical methods and isolate them from each other electrically. The EL817 opto-isolators are designed to use a photovoltaic output transistor with an LED as the input. This component is designed specifically to transfer data signals while isolating the circuits.

The use of opto-isolators is increasing constantly in the modern age due to their ability to transfer data using light energy and to reduce the risk of circuit failure. As this type of technology becomes more popular, understanding the operation and features of opto-isolators is important. This article will discuss the application field and working principle of the EL817 opto-isolator.

Application Field

The EL817 opto-isolator is suitable for applications that require electrical isolation and data transfer without the need for an electrical connection. The EL817 can be used in a variety of applications, such as in safety circuits, motor control circuits, current detection circuits, power supply circuits, and various communication systems. It is commonly used as an interface between digital circuits and analog circuits, allowing for safe data transfer between the two, as well as isolation of both circuits.

Working Principle

The EL817 opto-isolator consists of two main components: an LED and a photovoltaic output transistor. The LED is used as an input and activates the photovoltaic output transistor when it receives energy from the input. This activates the output transistor and the electrical isolation between input and output is maintained. The output of the opto-isolator is then available for use.

The LED is driven by the input energy which causes connected electrons to become excited and emit photons. The photons are then absorbed by the photovoltaic output transistor which then activates the output signal. This generates an electrical signal on the output side of the device.

By using the principle of opto-isolation, the EL817 can achieve a much higher level of isolation than standard electrical contacts can achieve. This is because opto-isolators use light energy as the carrier beam and this generates a much higher level of isolation between the input and output circuits and allows them to be completely electrically isolated from each other.

Conclusion

The EL817 opto-isolator is an ideal component for applications that require data transfer and electrical isolation without the need for an electrical connection. The use of LEDs and photovoltaic output transistors allows for both data transfer and isolation. By using optical isolation, the EL817 can achieve a much higher level of isolation than standard electrical contacts.

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