1.More output voltage compared to shunt capacitor filter.

2.Less No of ripples.

1.Higher cost relative to shunt capacitor filter.

2.Larger in size.

Volume of a section of a sphere = pi * (h2) * (r - h/3)

where

pi = 3.14159...

h is the distance from the flat base of the section to the apex of the section.

r is the radius of the sphere

One way is to use a pi filter composed of inductors and capacitors.

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pi filter is best using inductor and capacitor.