H11A817B300

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Optoisolators, also known as optocouplers, Optical Couplers, photoelectric isolators, optoelectronic isolators, and photocouplers, are components that optically couple two circuits. The H11A817B300 is an example of such a device. In this article, we\'ll take a closer look at the application fields and working principle of the H11A817B300.

The H11A817B300 is designed for use in isolated power systems to prevent ground loops, and reduce noise from affecting sensitive circuits. It is a 4-pin, transistor-type, photovoltaic output optoisolator, comprised of an input LED and an output phototransistor. The device is typically used in a variety ofswitch-mode and linear power supply applications, includingVoltage Regulators, Switching Power Supplies, and DC-DC Converters.

The H11A817B300 provides current transfer ratio (CTR) of 200%, which allows the device to achieve high-efficiency power transfers. Additionally, the device features low saturation voltage, fast switching times, and strong isolation between the input and output circuits. It has a self-extinguishing plastic package, which is capable of withstanding high temperatures up to 105°C.

The working principle of the H11A817B300 is based on the optical isolation of the input circuit from the output circuit. Photons generated by an LED in the input circuit pass through an optically opaque material, isolating the two circuits. These photons are detected and converted into a current by a photodiode in the output circuit. This current is then amplified by a transistor, ultimately providing the desired electrical isolation between the two circuits.

The H11A817B300 is designed for use in isolated power systems to prevent ground loops, and reduce noise from affecting sensitive circuits. The device provides a reliable means of optically isolating input and output circuits in a wide variety of power applications. With its high CTR and low saturation voltage, it is ideal for use in switch-mode and linear power supplies, Voltage Regulators, and DC-DC Converters.

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