What Are Rgb Leds? Structure And Use Of Led Rgb

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Have you noticed the buildings, hotels, restaurants or signs that light up and flicker beautifully at night. That's thanks to the RGB LEDs. The colors will change continuously creating a spectacular light show. So what is RGB led? Structure as well as how it is used in life. Here, let's go with SpaceLight to learn about this type of led light.
See more: https://khonggianled.com/led-rgb-la-gi/

What are RGB LEDs?

Led RGB is a type of led chip composed of 3 colors corresponding to each letter (Red: red, Green: green, Blue: blue). With the combination of these 3 lights together, the led lights change colors flexibly. RGB led lights often appear in bars, karaoke, stages, installed on buildings, ...

It is necessary to distinguish RGB led from rainbow led because it is easy to confuse. Led rainbow is also a type of led that changes color but is just a decoration for electronic devices such as speakers, keyboards, mice, cpu, ...

Structure of RGB LEDs

External texture part
Led RGB has 4 pins and a light bulb, including 1 common positive pin (Anode) and 3 separate negative pins (Cathode) ...
... equivalent to 3 colors red, green and blue. The color of the lamp will change based on controlling the led pins using PWM pulses.

Driver circuit of 4-pin RGB led

A panel usually has a voltage of 5-24V to control the color of light, change effects, create different color gamuts as well as adjust the intensity of light and dark levels.

In which RGB Led has met the criteria, using a microcontroller circuit to create 8 different colors including: White - Red - Blue - Green - Magenta - Cyan - Yellow - Black.

Features of RGB LEDs

Brightness

With small light spots close together, the light output will be small. Once the LEDs are paired together, they will create a large capacity suitable for lighting and decoration in large areas.

View

RGB lights are made using 3 primary colors. Because when looking closely at the light source, small details can be discerned, only when combining the 3 colors red, blue, and green together, the color coordination when seen through the naked eye will not be noticed.

Coloring time

Instead of having to light up all 3 colors at the same time, we can light up in order of different colors from time to time. By changing the pulse width (PMW) from there, the RGB LEDs can change the light intensity to their liking. This will make the cost cheap and the circuit simple.

Types of RGB leds on the market
5mm . RGB Leds
5mm RGB LED is a 4-pin led and has a size of 5mm. The voltage of this type is about 2.1-4.5VDC. The light emitted from the led chip is quite large from 2000-5000mcd despite its small shape.

Led Strips RGB
LED strip RGB has the surface of the chip produced by surface-gluing technology. Usually about 5m in length and can change color. This type of LED is used for decorative purposes.

Led RGB aluminum bar
Is a type of multi-color led mounted on an aluminum bar with a very small capacity, using a 12V power source. LED RGB aluminum bar has beautiful, attractive colors suitable for building decoration.

Led reflector RGB
Is a line of monochromatic LEDs that can change color used in the production of reflectors. The chip is mounted on a circuit board consisting of 3 balls, 4 balls or 7 balls. Led reflector RGB helps to illuminate the wall surface, creating accents for buildings and architecture, highlighting advertising words.

Led WRGB
A variant of RGB led, with 4 colors combined including white, red, green, blue. Led WRGB has a CRI index so the lighting effect is also better. Often used to decorate fish tanks or aquariums.

Led tube RGB
Can change color through programming on computer. Led tubes are often used to reflect the ceiling, the capacity is usually 10W or 20W.