ACPL-4800-500E

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Optoisolators are important components in electronic systems. They provide separation between the input and output signals, allowing signals to be transmitted without the risk of high voltage damage to circuits. This article will discuss the application field and working principle of ACPL-4800-500E, an isolated logic output opto-isolator product.

Introduction

ACPL-4800-500E is an opto-isolator with a logic output. It is a part of the AVAGO low-voltage logic output optocoupler product line from Broadcom. It is a single channel six-pin DIP-package device with buffered logic output. It is made with gallium aluminium arsenide (GaAlAs) LED and is available in various packages and current transfer ratios (CTRs). The output is short-circuit protected. The device is suitable for industrial applications such as motor control, home appliances, display back lighting, hardware safety and input/output control.

Working Principle

The ACPL-4800-500E opto-isolator works by using the principle of light reflection. The LED in the device emits infrared light when it is powered. The light is focused onto a photosensible element, which detects the light and converts it into electrical energy. This electrical energy is then used to drive a logic output transistor, which ultimately outputs the desired logic signal.

The LED is typically driven by a simple DC power source. As the LED voltage increases, the amount of light emitted increases, resulting in a higher CTR. However, the LED is not always at full brightness; the current applied to the LED can and should be adjusted so that the CTR is within the required range.

Applications

The ACPL-4800-500E opto-isolator is a low-voltage device that can be used in a number of different applications. One of these applications is motor control. The opto-isolator provides electrical isolation between the motor and the control circuit, which prevents damage to the motor or the control circuit in the event of a short circuit.

The device can also be used to provide electrical isolation in home appliances. This is beneficial because it prevents the appliance from damaging the control circuit during operation. Additionally, the device can be used for display backlighting, providing electrical isolation between the display and the control circuit.

The device can also be used in hardware safety systems, which provide protective circuit isolation in the event of an electrical fault. This is important for industrial applications, where an electrical fault can have serious consequences if it is not properly managed. Finally, the device can be used for input/output control, providing the necessary electrical isolation required for this type of application.

Conclusion

In conclusion, the ACPL-4800-500E opto-isolator is a low-voltage logic output device that is suitable for use in a variety of industrial applications. It works by using the principle of light reflection, with the LED emitting infrared light that is focused onto a photosensitive element. This electrical energy is then used to drive a logic output transistor for the desired logic signal. The device can be used for motor control, appliance safety, display backlighting, hardware safety, and input/output control.

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