EL3H7(I)-G

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Optoisolators are used to protect circuitry by isolating one part of an electrical circuit from other parts. An optoisolator is composed of a light-emitting diode (LED) combined with a photodetector, such as a phototransistor. EL3H7(I)-G is one kind of optoisolators which includes a transistor, photovoltaic output.

The EL3H7(I)-G optoisolator is designed to provide electrical isolation between an input and output circuit. It can block reverse currents up to a maximum of +20V, while being capable to permit positive currents as low as 200 microamperes. The high isolation voltage of 4.7KV make it suitable for protection of circuits from surge and high-voltage transients and it is also suitable for medical equipment, security equipment and system control applications.

The EL3H7(I)-G optoisolator consists of four distinct elements which combine to provide electrical isolation. The first is the LED, which is energized by a DC voltage applied to its input. When the voltage exceeds a certain threshold, the LED emits light. This light is then detected by the second element, which is an infrared photodiode. The photodiode conducts a photocurrent which is proportional to the intensity of the light.

The third component of the EL3H7(I)-G is a transistor. The photodiode\'s current flows into the base of the transistor, driving it to its saturation level. This action turns on the fourth and final component of the optoisolator, which is a photovoltaic output. The photovoltaic output creates a voltage at its terminals which is equal to the LED input voltage.

In terms of working principle, the EL3H7(I)-G optoisolator isolates an input voltage from the output voltage via the four elements of the optoisolator. The key element that provides electrical isolation is the photovoltaic output. This prevents reverse currents from passing through the optoisolator and into the output circuit, thereby providing electrical isolation. Furthermore, the output voltage will be the same as the input voltage, thus providing isolation of the entire circuit.

In terms of application field, the EL3H7(I)-G optoisolator can be found in a wide range of equipment and applications. It is commonly used for industrial control systems, instrumentation and other signal interface applications. It can also be used in medical equipment, security equipment and system control applications due to its high isolation voltage and low current capabilities.

The EL3H7(I)-G optoisolator is a versatile device, and its range of features make it suitable for a wide variety of applications. Its combination of a transistor, photovoltaic output and high isolation voltage make it well-suited for industrial, medical, security and system control applications, while its low current capability makes it suitable for signal interface applications.

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