593292627002F Optoelectronics

Series:	*
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Moisture Sensitivity Level (MSL):	--

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LEDs-Circuit Board Indicators, Arrays, Light Bars, Bar Graphs

Introduction

The LED (Light Emitting Diode) has become one of the most widely used electronic components in the past few decades. LED technology has advanced from the humble blinky LED indicator to powerful RGB LED displays capable of displaying high-definition graphics. The latest advances in LED technology have opened up a range of new possibilities for displaying information, from basic bar graphs and time displays to complex digital interfaces and interactive displays.

Application Field & Working Principle

One of the most versatile and widely used applications for LEDs is on circuit boards. LEDs can be used to indicate the state of a system, such as a faulty connection or to indicate whether power is on or off. LEDs can also be used as a digital output, such as driving a matrix of LEDs to create an array of bar graphs or a scrolling time display.LEDs are usually connected to a circuit board via two leads, a positive lead and a negative lead. The positive lead is usually connected to the anode or positive terminal of the LED, while the negative lead is connected to the cathode or negative terminal. When an external voltage is applied to the circuit board, current flows from the positive terminal through the LED, causing it to light up. The colour, brightness and intensity of the LED can be controlled by adjusting the voltage and current.Another popular application for LEDs is as arrays or light bars. A light bar array is a series of LEDs arranged in a square or rectangular pattern. These arrays are typically used as displays in digital devices, such as digital clocks, and can be used to create scrolling messages or segmental displays.Bar graphs are another popular application for LEDs. Bar graphs are used to display information in an intuitive, visual way. They are often used to display the level of a system, such as oil, gas or temperature readings.Finally, LEDs are used in interactive displays, such as touchscreens or keypads. LEDs are often used in keypads to indicate which buttons are pressed. LEDs are also used in touchscreens to indicate the location of the user\'s touch.

Conclusion

LEDs have revolutionized the way we display information and interact with electronics, from blinky LED indicators to large, interactive displays. Their versatility, low power consumption and long life make them ideal for a wide range of applications.

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