VOL617A-2T Isolators

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Optoisolators are isolation devices used to safely couple two electrically isolated circuits. A common application of optoisolators is in the electronic control of power. In this application, an optoisolator serves as an electrical switch that utilizes light instead of electricity to interact with the control circuitry and the power being switched. VOL617A-2T is an application field and working principle of an optoisolator.

Introduction

The VOL617A-2T is an optoisolator based on a transistor-photovoltaic output. This optoisolator features a Darlington output, providing low current transfer ratios (CTRs), and extended temperature range for operation in demanding applications.

Application Field

The VOL617A-2T optoisolator is a versatile and robust device, ideal for a wide range of applications. Some areas that benefit from its features include:

• Industrial applications: Automation, drives, sensors, process and safety control, and process automation.
• Telecommunications: Networking, powerline communications, and systems integration.
• Medical: Equipment and instrumentation.
• Consumer electronics: Home automation, entertainment systems, and multiroom audio control.

Working Principle

The VOL617A-2T optoisolator is a photocoupler that works by using a light-emitting diode (LED) to convert electrical signals into light signals. An optically coupled photo transistor serves as the optically coupled element in the photocoupler circuit, which detects and converts the light signals into electrical signals.

The VOL617A-2T optoisolator provides a high CTR, which enables it to provide high isolation voltage between the input and the output. It also has high common-mode transmission and high linearity, which ensures that the input signal is accurately reproduced. The VOL617A-2T is also configured with an internal bypass diode for reverse voltage protection.

The optoisolator works by directing the LED\'s light toward the phototransistor. When the LED is on, the phototransistor\'s base is biased to its cut-off point, allowing the transistor to be conductive. This allows the input signal to be converted into the output signal.

When the LED is off, the transistor is cut-off, so the optoisolator remains electrically isolated from the input signal. This makes the optoisolator a safe and reliable solution for protecting sensitive electronics and circuits from electrical transients or other environmental disturbances.

Conclusion

The VOL617A-2T is a versatile optoisolator that can be used in a variety of applications. It has a low current transfer ratio and provides high isolation voltage between the input and the output. Additionally, the optoisolator has a high common-mode transmission, high linearity, and an internal bypass diode for reverse voltage protection. These features make the VOL617A-2T a reliable and safe isolation solution for many applications.

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