LN21CALU Optoelectronics

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The LN21CALU is the first LED indication discrete in the industrial loop control area. It is a low-cost, energy-efficient semiconductor light-emitting diode suitable for a wide range of applications, from standalone status indication to integrated with loop control systems. The LN21CALU is suitable for operation in various industrial atmospheres and has been used for decades as a reliable and accurate light-emitting device for process monitoring, alarming, and discrete output based Industrial Automation systems.

The LN21CALU semiconductor has the displays the high-efficiency, the power saving, the high brightness of the light, the reliability, the Low-Temperature co-efficient and the small size that it self-developed has all of this characteristics. The innovative technologies, flexible architectures, and superior thermal performance of LN21CALU make it an ideal choice for applications in the industrial loop control automation.

The LN21CALU working principle is based on the light emitting diode, which produces visible light when current flows through the device. When voltage is connected to the leads of the LED, a current passes through the junction and electrons and holes recombine, resulting in the emission of light. The brightness of the light is determined by the amount of current passing through the junction. The LN21CALU also includes a current limiting circuit which ensures that the output light remains constant for a given voltage supply.

The common applications of LN21CALU LED Indication include: Status indication, simple control loops, machines, pumps, safety systems, and alarms. The device can also be integrated into more complex loop control systems such as temperature controls, level controls, flow controls and process control valves.

The LN21CALU can be used as either a discrete light indicator or as a multi-level indication indicating the presence or the absence of different states. In the case of multi-level indication, the device can be connected to a variety of indicators such as lights, buzzers or LCD displays giving the user an immediate indication of the status or condition of the system.

The LN21CALU is a reliable and cost-effective LED indication device for a wide range of discrete applications. Its unique design ensures that the output light remains constant for a given voltage supply, and its flexible architectures allow for easy integration into existing industrial control systems. Its superior thermal performance guarantees superior performance and long life, making it the ideal solution for discrete industrial loop control applications.

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