Re: 12 LED resistance circuit help


"dB" <dmb06851@xxxxxxxxx> wrote in message
news:1757808.0504240718.1ebdb09b@xxxxxxxxxxxxxxxxxxxxx
> "Anthony Fremont" <spam@xxxxxxxxxxxx> wrote
> >
> > Vf _is_ dependant upon current.
>
> I neither said nor implied that it wasn't.

I guess I misunderstood you when you said:

"The actual value across each l.e.d. varies from device to device at any
current."

> > At extremely low currents, Vf will be
> > significantly lower than the nominal value. As current increases,
so
> > will Vf. The curve is steep, but it is not vertical.
>
> Yes, the curve is in an article on my site. (I can suck eggs.)
>
> You seem to have misundersood my post which was regarding the
> ambiguous sentence "However the current should
> stay 20 mA, and due to the resistor, one LED can only have a higher
> voltage
> if another LED has less."

.

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