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