The LED of several colours

[saowaluck]

Last week, I saw a lot of LED at the electronics market.I doubt about the operating of LED which shine the colours.I would like to know the principle of this LED.

 

[GrandAlf]

There are plenty of these around now. The led contains 3 emitters Red, Blue Green. By altering the relative intensities the full colour spectrum can be achieved.

 

[meax98]

Multicolor or RGB LED are three LEDs in one case. You have to drive them on special way to obtain any color. Some examples:

using CMOS CD4029 & 555
**broken link removed**
https://www.bit-tech.net/article/92/

using PIC16F84 & 3xPWM
https://gathering.tweakers.net/forum/list_messages/751001

Information & docs
**broken link removed**

regards

meax98