JANTXV4N24A

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Optoisolators are electronic components used for isolating electric circuits, allowing for the transfer of signals between them without establishing an electrical connection. JANTXV4N24A is a series of optoisolators, which belongs to Transistor, Photovoltaic Output optoisolator family. In this article, we will discuss this type of optoisolator’s application field and working principle.

Application Fields of Transistor, Photovoltaic Output Optoisolators

Transistor, Photovoltaic Output optoisolators are ideal for applications such as interfacing with DC power supplies, A/D converters, transducers, process control and/or any low speed (less than 100kHz) digital signal with current drive and logic outputs. Photovoltaic Output optoisolators have an especially wide range of applications, such as applications, which require long term reliability, such as automotive, communication, and instrumentation devices. The product also works on some motor controllers.

The Working Principle of Transistor, Photovoltaic Output Optoisolators

The Transistor, Photovoltaic Output optoisolator is a series of 6 pin optoisolators, each consisting of a gallium arsenide infrared-emitting diode (GaAIAs LED ), a phototransistor and an insulation barrier, packed in a plastic housing. The device operates on the principle of photoconductivity, where the optoisolator’s input signal (an electrical signal) is transmitted via the LED, which generates light, to the output signal (a phototransistor). The forward voltage of the LED must be 3V or above in order for it to work correctly.

The LED is forward biased with the input current, and emits light in proportion to the input current. The light strikes the junction of the phototransistor and causes current to flow in the phototransistor’s emitter. This current is amplified by the phototransistor’s collector, and the output of the phototransistor then drives the load. The phototransistor acts as an amplifier, with a gain of around 10 to 20.

The LED is reverse biased with a low voltage, typically 1.8V in the 5V supply type and 3.0V in the 12V supply type. Finally, the isolation barrier dimension is designed to provide electrical isolation between the input and output.

Conclusion

The JANTXV4N24A Transistor, Photovoltaic Output optoisolator has a wide range of application fields and working principles that make it a widely used optoisolator and make it particularly useful in applications requiring long term reliability. It consists of a gallium arsenide infrared-emitting diode, a phototransistor and an insulation barrier, all packed in a plastic housing and is operated on the principle of photoconductivity.

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