EL816(D)

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The EL816(D) is an Optoisolator Transistor with a Photovoltaic Output. It is a phototransistor designed for applications where isolation between the input circuit and the output circuit is required. It is particularly useful in the industry in circumstances where a controller needs to monitor a signal while maintaining complete electrical isolation between the monitored circuit and the controller.

The EL816(D) consists of an IRED (light-emitting diode) mounted on a phototransistor die within a plastic package. This package ensures complete electrical isolation between in input and output, meaning that the input circuit cannot be affected by the output circuit. The EL816(D) is operational over an ambient temperature range of 0 to 70 degrees Celsius, making it suitable for a variety of applications.

When the IRED is activated by a current being passed through it, it emits a beam of infrared light, which is efficiently coupled to the phototransistor. This causes the phototransistor to open, creating a large voltage across its output terminal. It is important to ensure that the leads connecting the input of the optoisolator are properly insulated and that all components are correctly connected for the optoisolator to operate correctly.

The EL816(D) is designed to operate even in adverse electrical noise environments. The optoisolator provides isolation to provide protection from spikes, transients, and surges that could otherwise damage the microprocessor or controller. Additionally, the EL816(D) has a very low current drain, making it highly energy-efficient.

The EL816(D) is used in a wide variety of applications including monitoring of temperature levels, current levels, or other environmental conditions that must be isolated from a microprocessor or controller. It is common to find the EL816(D) used in industrial, consumer, or medical devices. For example, the EL816(D) is often used in automated irrigation systems, smoke detectors, and medical imaging equipment.

In order to ensure proper operation and reliability of the EL816(D) it is important to use a resistor in series with the LED. This resistor must be a tailored component, with a value that is specific to the application, and it should be chosen such that the current passing through the LED is well within its specified range. It is also important to ensure that the phototransistor is at least rated for a voltage that is greater than the anticipated voltage across the optoisolator.

All in all, the EL816(D) is an easy-to-use and reliable optoisolator that provides complete electrical isolation between the input and output circuits. It is suitable for a wide range of applications and can be used to monitor and control a variety of signals and conditions. With its low current drain and ability to withstand electrical noise, the EL816(D) is a versatile component and can be used in many different types of circuits and applications.

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