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LED Indication - Discrete

Light emitting diodes (LEDs) are widely used in many industrial and consumer applications including lighting and display panels. LEDs are typically used as a single color indicator light; however, they are also used in more complex displays as part of combination indicators and multicolor indicator matrixes. These displays vary widely in size and complexity, but in general they are composed of multiple individual LEDs that are driven by discrete components.

7021X7 LEDs are the latest generation of discrete LEDs available on the market. With their high brightness, low power consumption, and wide range of colors, they are the ideal choice for use in a number of lighting, display, and signaling applications. This article will cover the application field and working principle of the 7021X7 LED.

Applications of 7021X7 LEDs

The 7021X7 is well suited for a number of applications including:

• Indicator lights and displays
• Backlighting
• Status indicators
• Traffic signals
• Pedestrian crossings
• Navigational markers
• Illuminated signs and displays

These LEDs are also often used in combination with other LEDs or with other types of light sources such as neon lamps or incandescent bulbs for more complex displays. This allows for a greater range of color selection and display functions.

Working Principle of 7021X7 LEDs

7021X7 LEDs are powered by a discrete local DC power supply, typically 5-12 volts. When a voltage is applied between the anode and cathode of the LED, electrons are injected into the PN junction of the diode. These electrons then recombine with holes in the junction and give off light energy in the form of photons. This light energy is visible to the human eye and gives off the characteristic glow of the LED.

The intensity of the light produced by the LED is dependent on the forward voltage and the amount of current being driven through the device. This, combined with the color of the light produced by the phosphor coating on the LED, determines the color of the light that is emitted. This allows for the display of multiple colors through the use of different combinations of forward voltage and current.

Conclusion

The 7021X7 LED is a versatile and powerful discrete LED that is perfect for a number of lighting and display applications. With its high brightness, low power consumption, and wide range of colors, the 7021X7 LED is the ideal choice for a number of LED signaling and display applications.

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