I'm confused about led current draw, my understanding of through hole LEDs was that whatever current is going through one, is going through the others. By that I mean if I had 3 1.5v 20mA LEDs I would only require a 4.5v supply with 20mA output.
So the reason I'm confused is that I read my led strip requires .4A per meter... What does that even mean, do I need a whole amp for 2 meters now?
My application is in actuality driving 1 meter strip of rgb LEDs. So what current output would I need per channel on an led driver chip? 400mA I suppose...?