Advantages and disadvantages of choke input AC filter

Advantages:

There are some advantages of choke input AC filter which are given below.

The choke input AC filter has no loading effect on the rectifier and power transformer.
It has better voltage regulation than that of π filter.
The diode does not have to carry surge currents.
It has a very low ripple factor as compared to series inductor filter and shunt capacitor filter.
It has very good load regulation.
It has no loading effect on the rectifier and power transformer.
The choke input (LC) filter has a high output D.C voltage.

There are some disadvantages of choke input AC filter which are given below.

The choke input filter produces the audible noise due to inductor.
It is not useful for very low load currents.
It cannot be used together with half wave rectifier.
The use of bleeder resistor increases the rating of rectifier circuit.
There is a loss of power in the series inductor due to its DC resistance.
It has low output D.C. voltage than that of π type filter.
It has high ripple factor than that of π type filter.
It becomes costly due to the use of large value of an inductor L and a capacitor C.