ok, ya voy entendiendo, pero son 18€ creo que akí pone que son necesarios. "Please note You should fortified take care of the different selections (bin codes) od the LEDs. For example: White LEDs of Rank "U" have a luminous flux of about 91 till 118.5lm and lower ranks a lot less (@ 1000mA). These differences and the later light efficiency of your application can thereby highly fluctuate. The low forward voltages (Vf) assure a low development of heat that benefits a maximum live time of the products. Please do never run applications with high power LEDs without constant current power supplies. You can find those right here. If you have any trouble with this subject matter or need a special rank just send us an email. " Aunque me dijeron que sin los estabilizadores la vida de los leds podría redicirse, pero que debido a su larga duración y el uso que le damos podríamos prescindir de ellos, que opinas?????????
Yo creo que podrías prescindir de ellos, ya que si los alimentas con solo 3 pilas el consumo será pequeño (a mayor voltaje mayor consumo)