El rizado se puede definir como: Vrms: Valor eficaz de la componente alterna (root mean square)
V r = rms Vdc
Vdc: Componente continua Voac
Vr/2 0
-Vr/2
Vrms =
1
π
⋅∫
π
0
α
π
2
⎛ Vr Vr ⎞ ⎜ − ⋅ α ⎟ dα = ⎝2 π ⎠ π
1 ⎛α α3 α2 ⎞ Vr ⎟⎟ = Vr ⋅ ⋅ ⎜⎜ + 2 − π ⎝ 4 3π 2π ⎠0 2 ⋅ 3
Ahora se sustituye el valor de Vrms en la fórmula del rizado:
r=
Vrms Vr I dc 1 = = = Vdc 2 ⋅ 3 ⋅ Vdc 4 ⋅ 3 ⋅ f ⋅ C ⋅ Vdc 4 ⋅ 3 ⋅ f ⋅ C ⋅ RL
De la fórmula se deduce que r es inversamente proporcional a f, C, y RL
4RECTIFICADOR DE MEDIA ONDA
r=
1 2 ⋅ 3 ⋅ f ⋅ C ⋅ RL
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