Advantages and disadvantages of series inductor (L) filter

There are some advantages of series inductor (L) filter which are given below,

• The series inductor (L) filter reduces the ripple in the DC output of rectifier circuit.
• It has no surge current through diode.
• It has low ripple factor at heavy load currents i.e. low load resistance.

There are some disadvantages of series inductor (L) filter which are given below,

• It cannot be used with half wave rectifier, but it is to be always used with full wave rectifier.
• It gives low output DC voltage for larger value of inductance.
• It has poor voltage regulation.
• It has high ripple factor for light loads i.e. small load currents.
• It is not suitable for light loads as ripple factor is directly proportional to the load resistance R_L.
• It produces audible noise.
• It is bulky and more costly.