VOL628A-2X001T Isolators

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Optoisolators are electronic components that serve to electrically isolate two circuits using light. A typical optoisolator includes a light source, such as an infrared light-emitting diode (LED) or laser diode, and a photosensor, such as a phototransistor or a phototube. The VOL628A-2X001T optoisolator belongs to the category of transistor, photovoltaic output optoisolators. This article will discuss the application field and working principle of the VOL628A-2X001T optoisolator.

Application field

Transistor photovoltaic output optoisolators such as the VOL628A-2X001T are primarily used for isolating low-voltage analog signals with no common connections to either side of the circuit. This optoisolator is engineered to attenuate noise which may distort the signal, such as high-frequency electrical impulses, voltage surges, and ground loops. As such, VOL628A-2X001T optoisolators are often utilized for isolating control signals in industrial and automotive applications.

Typically, the VOL628A-2X001T is used in a two-wire control system, providing an effective and comprehensive solution for signal transmissions. This optoisolator is ideal for applications requiring current sensing, as its built-in phototransistor output current gives excellent signal superimposition. Additionally, this is usually a preferred product for low power applications, as its low power consumption makes it highly energy-efficient.

Working principle

The function of a transistor photovoltaic output optoisolator such as the VOL628A-2X001T is to establish an electrical connection between two points without allowing them to be physically connected. This is achieved by the optoisolator’s two components: an LED and a photosensor. The LED shines light on a phototransistor, which is used to detect the light. When the LED produces light, the phototransistor produces a small voltage, which can be used to power the external circuitry.

The LED requires a current to generate the light, and this current is supplied by the external circuitry. The intensity of the light produced by the LED is determined by the amount of current supplied. The voltage produced by the phototransistor is proportional to the amount of light received by it, so the output voltage of the optoisolator will vary with the intensity of the light. This output voltage can be used to power or switch the external circuitry connected to the optoisolator.

The VOL628A-2X001T optoisolator features a low power consumption of 200mW, allowing it to be used in low-power applications. Additionally, it has a wide operating temperature range from -40°C to 125°C, making it suitable for use in a variety of environments. Its built-in phototransistor output current is also highly suitable for current sensing applications.

The VOL628A-2X001T optoisolator is an excellent solution for providing isolation between two circuits in industrial and automotive contexts. It is engineered to attenuate noise, providing an effective solution for signal transmissions with no common connections between the circuits. Additionally, its low power consumption and wide operating temperature range make it well-suited for low-power, high-temperature contexts.

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