ELM3023(TA)

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Optoisolators are devices used to electrically isolate two circuits while transferring a signal between them. The ELM3023 is a 600V solid state triac output optoisolator, designed specifically for easy integration in commercial or industrial applications. This optical isolator enables reliable, low cost isolation and inrush current protection for resistive, capacitive, and inductive loads.

Overview of the ELM3023

The ELM3023 is a solid state optoisolator from Everlight Electronics that has a maximum continuous current rating of 1.2A and an operating voltage of 600V. It has an open collector output of 3.6V and a response time of 15ns. It features a built-in logic circuit and over-voltage protection, which helps ensure a long life span and reliable performance. It also features an LED indicator that lights up when a current is present, which makes it easy to identify if the unit is working or not.

Application Fields

The ELM3023 is designed for use in a variety of applications, such as:

• AC line voltage and current sensing
• Load switching
• DC motor control
• AC control systems
• Relays
• Auxiliary switches for high-voltage circuits

The ELM3023 is an ideal optoisolator for systems requiring an isolation barrier between the input and output signals, as it is capable of withstanding high voltages and is extremely reliable. It is suitable for commercial and industrial applications in which high voltage and long life are key considerations.

Working Principle

The ELM3023 utilizes an LED and a triac mounted on the same chip to transfer electrical signals optically. When the input voltage is less than the turn-on voltage (3.2V), the LED imbedded in the chip is illuminated and current passes through the LED, activating the triac. Once the triac is triggered, the circuit is then completed, allowing current to flow through the output and to the load.

The ELM3023 is designed to switch on or off based on the input voltage level. When the input voltage is greater than the turn-on voltage, the LED turns off and the triac is de-activated. As a result, the output current is no longer flowing, and the load is disconnected from the system.

Conclusion

The ELM3023 is a 600V solid state optoisolator with a triac output that is designed for commercial or industrial applications requiring reliable, high voltage isolation and long life. It utilizes an LED and a triac to transfer electrical signals optically, and is able to switch on or off depending on the input voltage level. This makes the optoisolator an ideal choice for applications that need reliable, high voltage isolation and long life.

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