Hello guys, I'm an electronics newbie and I have lots of doubts about project that I'm slowly doing a lamp with RGB LED.
I have led with common cathode and three anode (rgb), everything works perfectly connecting each anode to a PWM output, problems arise when I want to light so many LEDs, using an 'external power supply. I bought mosfet P10NK60ZFP (datasheet http://pdf1.alldatasheet.net/datasheet-pdf/view/157200/STMICROELECTRONICS/P10NK60ZFP.html) n channel. I know that the LEDs, I know that I should buy the LEDs with an anode and three cathodes so as to control them easily. Unfortunately, I bought 100 LEDs with common cathode, so I have to overcome? I can reverse the tension with an auxiliary circuit? I also have the tlc5940nt that I can not use for the same reason! I have to throw the led or have any hope? I could solve a driving pnp moftet using my npn mosfet, it might work or is it crazy?
Thanks to all