One thing you should know is that running it (led) at its rated max current will be as bright as it will possibly get at said current.. increasing the voltage will only mean decreased efficiency.. E.G. if your running at 810mA @ 9.46v then that means its burning up 7.66watts.. now lets say for instance its running 833mA and a theoretical 12v that would mean you would be getting a not even noticeable boost in light (23mA worth) but your led will be burning up 10watts (12 x 0.833) and harder to keep cool, so in all i think the light is doing pretty well its all about the mA (amps) with leds.. as long as you get your desired mA rating (or close to) then everything should be fine.. you could have 2 identical leds both running at 1amp but w will be running at 3.2v and the other at 3.35 and they can be running off the same driver.. but they will be identical (or close to) light output..
Ma riguardo al voltaggio? Cioe' se voglio alimentare il LED con 3volt, basta alimentare l'intero circuito con 3 volt?
Dovrei comunque pilotare dei led da circa 1W, come driver pensavo all'LM perché mi sembrava un circuito molto semplice e così visto che il driver agisce sul positivo posso mettere un bel mosfet dall'altra parte e usare il PWM
non gli basta quest'ultimo limitando la corrente massima con un'opportuna resistenza?
Cmq è clamoroso, qui fanno gli scontrini anche per i 25cent di cartoline!!
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