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¿Qué resistencia utilizar al usar un LED?

De todos es sabido, que si no se quiere quemar un led se le debe poner una resistencia y de este modo limitar la corriente que pasa por él, pero ¿cuál es la resistencia más conveniente?, ¿qué parámetros se deben tener en cuenta?.

La fórmula que se utiliza para calcular la resistencia mínima y obtener la máxima iluminación, es la siguiente:

R = (Vcc –Vd)/Id

Donde:

Vcc = Tensión de alimentación.

Vd = Tensión del led.

Id = corriente que pasa por el led.

En el video tutorial, se puede ver cómo se hacen los cálculos teóricos, que ventajas e inconvenientes hay en colocar los leds en serie y paralelo.

Y en los últimos minutos del  video se comprueba prácticamente, como los resultados obtenidos matemáticamente se ajustan mucho a la realidad.

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