Multicolor led-bulb
Dear Technical support,
Please tell me what I can skip-out of your design RDR-195 if I only want to have an output 24DC-1A as power supply of a multicolor R,G,B-led bulb, if the main supply is a by triac controlled 95-265VAC net.
With help of a microprocessor I want to realize PWM- dimming, of the R,G,B currents through the leds.
For that purpose I have my own way to detect in each bulb, the firing angle of the main net.
So the firing angle detection is not the problem.
All I need is a constant-voltage power-supply, again in a by triac controlled net.
Please advise me too, if you already have another design that is more suitable for my application.
That’s an universal in use, from a central point dimmable R,G,B, led- bulbs, the user can select one of the seven colors by him/her selves from outside, with a little screwdriver.
Thanks and best Regards
Laurens Fridael (Mr.)
For a pure triac-controlled dimming, you can use RDR-195 as a reference, especially for wide-range input.
However, the design needs to be updated for a 24V, 1A output.
For the PWM dimming, I can't find a reference design that is PWM and triac-controlled at the same time.
There is also no CV power supply because as the LED load is dimmed, the voltage naturally drops as well.