VO610A-4X019T

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Optoisolators are devices that use light signals to electrically isolate the output from the input. They are widely used in many industries, such as industrial automation, medical equipment, automotive electronics, military and aerospace, consumer electronics, and so on. Among the different types of optoisolators, Transistor, Photovoltaic Output optoisolators are widely used due to their robustness and high isolation capabilities. The VO610A-4X019T is one such optoisolator, which has a wide range of applications and a working principle that is worth studying in detail.

Application Fields

The primary application field for the VO610A-4X019T is for photo-assisted switching applications. It is constructed with a phototransistor, dominant-side dark-activated SCR, and photodiode in a single package. The wide input circuit voltage range, high isolation voltage, and high isolation assured performance make it a great choice for applications such as alarm systems, electronic ballast, induction heating systems, and so on. In addition, its flexibility in controlling the time delay makes it suitable for power supplies, consumer electronics, audio/video equipment, and any other applications where precise timing is a requirement.

Working Principle

The VO610A-4X019T optoisolator works on the principle of photoconductivity. When a light signal is applied to the phototransistor, electrons in the photodiode become excited and produce an electric current. This current is then transferred to the transistor’s base, turning it on. As current flows through the transistor, the voltage drop across it increases, thereby activating the dominant-side dark-activated SCR. This is how the output of the optoisolator is activated. The input circuit voltage can be adjusted by varying the light signal intensity.

It is important to note that the VO610A-4X019T optoisolator has an isolation voltage of up to 6500 VACrms. This allows it to provide excellent electrical isolation between the input and output circuits. Additionally, it has a wide input voltage range of 10 to 100 VAC. This makes it suitable for applications that require both high and low voltage input signals. The time delay can also be adjusted between 10 μs to 1 s depending on the requirements.

Conclusion

The VO610A-4X019T is a versatile optoisolator that can be used in a wide range of applications. It has a high isolation voltage of 6500 VACrms and a wide input circuit voltage range of 10 to 100 VAC. Moreover, it has an adjustable time delay that can be set between 10 μs to 1 s. These features make the VO610A-4X019T the ideal choice for applications where precise timing and high electrical isolation are required.

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