- #1
meereck
- 13
- 0
Hello,
I have a high power RGB LED with common anode.
I want to have 3 of them in series, and put them on 15V power supply.
And I want to switch green color on, and red color as well (something like a normal traffic light)
Here is the problem:
Given that three LEDs are in series, and are common anode, how can I switch color separately?
I was thinking about placing 6 transistors between them (on cathode of each LED - e.g. 1LED= 2 transistors for each color). I assume P-channel MOSFET (i.e. IRF9250) can do the job?
However, this is quite bad solution, does anyone have anything better?
I hope I explained it well,
I will post a drawing later on.
Thank you in advance,
M.
I have a high power RGB LED with common anode.
I want to have 3 of them in series, and put them on 15V power supply.
And I want to switch green color on, and red color as well (something like a normal traffic light)
Here is the problem:
Given that three LEDs are in series, and are common anode, how can I switch color separately?
I was thinking about placing 6 transistors between them (on cathode of each LED - e.g. 1LED= 2 transistors for each color). I assume P-channel MOSFET (i.e. IRF9250) can do the job?
However, this is quite bad solution, does anyone have anything better?
I hope I explained it well,
I will post a drawing later on.
Thank you in advance,
M.