Ley de Ohm

Si pensamos en el voltaje como "las ganas de los electrones de ir de un lugar a otro" y en la corriente como "la cantidad de electrones que se está moviendo", podemos suponer que mientras más ganas tengan de moverse, más serán los que se muevan.

Ohm descubrió esto, y se dio cuenta que para distintos conductores, la relación era distinta, pero siempre lineal.

 

Usando la siguiente notación:

 

  • v: voltaje
  • i: intensidad de corriente

 

Esa ley se puede escribir así:

 

  • v = r * i
Donde se puede ver que la relación entre el voltaje y la corriente es lineal.
Además la pendiente* de esta relación es constante para cada conductor, a esto le llamamos Resistencia y la denotamos por r.
Eso es casi todo lo que necesitan saber de electrónica... tal vez, más adelante, les hable sobre las leyes de voltaje y corriente de kirchoff, pero digamos que al hacer un robot interesante, lo que interesa, no es tanto el hardware (circuitos y esas cosas), si no que es el software (el programa que mueve al robot).
*: si alguien no entiende a qué me refiero con pendiente, avise nomás, explicaré un poco acerca de la geometría analítica y la ecuación de la recta.

 

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