J'essaie de déterminer quelle résistance de valeur utiliser dans un circuit à LED. L'équation que j'utiliserais pour faire ceci est:
Seems logical, and makes complete sense. The answers to the question How do I calculate the resistor value for a simple LED circuit? confirm this too.
J'ai les LED suivantes:
En utilisant une alimentation 5V:
En les connectant à l'équation ci-dessus, on obtient:
All good so far.
However, if I use the calculator at http://led.linear1.org/1led.wiz, that gives me 100Ω. If I use the ElectroDroid app on my phone, that gives me 85Ω.
So, I assume that the linear1 calculator is using a different method of calculating this resistor value; is there some better way of doing this?