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ACPL-K72T-560E application field and working principle

The Overview of Optoisolators - Logic Output

Optoisolator is a type of electronic component, also known as optical coupler, optocoupler, photocoupler, or optical isolator, and used for isolating two circuits electrically. It has the ability to couple two circuits with a high degree of isolation and high speed, and its user-friendly operation can help production lines reach higher levels of efficiency.

Optoisolator consists of an LED, which serves as the light source, and a photodetector, mainly phototransistors or photo diodes, which is used to transform the light signals into electrical signals. An optoisolator can be used in both analog or digital applications. In this article, we will focus on the application field and working principle of the ACPL-K72T-560E, which belongs to the Logic Output type of optoisolator.

The ACPL-K72T-560E Application Field

The ACPL-K72T-560E is a logic output type optoisolator, which can transfer a logic level signal with high speed and high isolation. It is suitable for many applications like industrial machinery, consumer, informational appliances, security systems, and contact control devices.

Its special features include the low power supply current of 1.8mA max, the wide operating temperature of -55℃ to +125℃, the peak forward current of 50mA, the phase-shift less than 45ns, and the LED off state leakage current of 1 μA max.

The ACPL-K72T-560E Working Principle

The working principle of the ACPL-K72T-560E is relatively simple as compared to other optoisolators. Its working principle can be explained in three steps: the trigger signal, the photoelectric conversion, and the output signal.

First, the trigger signal will be given to the LED in the optoisolator, which will in turn generate a light signal. This light signal goes through the photodetector and will be converted into an electrical signal. This electrical signal will be used to trigger the output, which is the logic level signal.

Although the working principle of the ACPL-K72T-560E is relatively simple, it can provide a high degree of isolation for the trigger signal and output signal. This isolation helps protect the safety of operators and equipment from short circuiting.

Conclusion

The ACPL-K72T-560E is a logic output type optoisolator, primarily used in consumer, informational appliances, security systems, and contact control devices. Its working principle, which includes the trigger signal, photoelectric conversion, and output signal steps, can provide a high degree of isolation between the trigger and output signals for safety purposes.

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