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Lac said:Would a LED rated to 2V 20mA, survive happy at 3V 20mA? How about 1.2V 20mA, would it light up just as much as it would if it was fed with 2V 20mA?
Lac said:hmm.. learned something new there, thanks! But if the voltage is ex. 18V will the current always be 180mA if I don't apply any load? 15V would give 150mA? 230V would give 2,3A, and so forth? I think I'm wrong, but that's what seems most logical to me right now.
Lac said:hmm. Are there any connection with what voltage and current you get from a powersource? like a 4:3 ratio or something like that?
Or does most powersources have a custom ratio between voltage/current? and if, how am I able to fine the current that a source outputs if I know the voltage? connect a load, and use a multimeter and ohms law?