You clearly don't understand l.e.ds in particular, or diodes in general. Nor do you seem to understand Audioguru's post.For example
12-3/0.020 = 450ohms
12v+ 450ohms +LED- Ground (Current will be 20ma)
Now if you look at the voltage across that LED it may read 2.8volts get the forward voltage reading of that LED now then increase the current without 2.8v moving ie 2.9v, 3.0v just increase current not voltage.
It is impossible to force more current and keep the voltage across the diode exactly the same due to the bulk resistance of the diode and imperfections of the junction. However, if you force 100mA instead of 50mA the voltage across the diode will change slightly and won't double like a resistor due to the diode characteristics.More current same voltage possible on an LED?
3.0v might consume 50ma is it possible to force 100ma but keep 3.0v? (I presume impossible....according to ohms law)
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