There are some previous works about filter design for AC to DC converter. Previous work about the filter design for AC to DC converter are done by S. Pyakuryal and M. Matin 11. AC power is available commercially at low cost. A method to convert AC to DC power are needed due to the DC power is more difficult and expensive to produce. AC source can be converted to DC power by using a rectifier. Usually a DC output powers from rectifier have a ripple which is undesirable AC components. The ripple sometimes are required for the rectifier application but it must not exceed the specified or threshold value .If the ripple exceeds a specified value, there are unwanted effects would appear in the system such as audible noise. However the ripple can be solved or minimize by using filter.