modeller wrote:The fact is that it's possible to wire up LEDs in parallel, and whether or not you approve of it, it's done -
A million wrong things can be done. We are just saying it is wrong from an engineering point of view. The Vf's can vary so current will not be shared in that case. Read any application note from any LED manufacturer, that covers LED arrays and they all will tell you the same thing. In my job I have to provide correct solutions that work and will not fail. That design would never pass any design review.
I also said not to do it didn't I? But the fact is, we are discussing what series and parallel circuits are. Whether it's right or wrong, a parallel
LED circuit is wired up the way I showed. If you don't believe it Google it. People also do make it work, even though you and I wouldn't want to do it. If you want to make people understand, you need to show the circuit plainly as it would really be, and one resistor per LED is not a correct representation of a parallel LED circuit. I don't know why you are complaining about what I posted since it's correct.