Red, Green,Blue, RGB Driver Circuit

In accordance with the datasheet of this LED the three leads on each side correspond with the three leads on the other side on a straight line such that the two straight ends left to right form the terminals of the red, green, blue LEDs inserted respectively inside the package.




Consequently, the higher most left, right end to end leads might form the cathode, anode of the red LED, the center left, right leads might correspond to the green LED, and exactly the same the lower most left, right end to end leads might indicate the terminals for the blue LED.






Configuring these types of leads of this RGB LED such that the individual colors may be modified individually, is really quite simple.
The idea is simply to integrate three different variable voltage regulators when dealing with these three LEDs, for instance by utilizing a LM317 voltage regulator, as demonstrated right here diagram.
RGB 3 watt LED color mixer, controller circuit utilizing IC LM317
Talking about the above diagram you can imagine that the three LM317 voltage regulators are actually in essential fact precisely similar with their part and wiring configuration.
Every one of the components possess the service of voltage adjustment and are all current controlled via a BC547 transistor and a resistor Rc.
The leads of the 3 watt LED are connected individually to the outputs of the 3 LM317 circuits, even though the input is given to almost all the 3 components by means of a regular DC source that can be a SMPS adapter scored properly for managing the RGB illumination.
The anode, cathode orientation of the LED can be mentioned in the diagram which should be with care and properly set before linking them to the 317 outputs.
As soon as things are all finished, along with the power is turned on, the voltage control feature present in the LM317 components can be utilized for establishing the illumination levels of the specific LEDs discretely for producing any of the particular color effects, starting from the primary RGB to voilet, indigo, orange, maroon etc.
The 10K presets of the 317 circuit could be replaced with 10K pots for making it possible for an external control for the meant color mixing influence on the LED.
The value of Rc may be determined by utilizing the following formula:
Rc = 0.6/LED current rating