Advantages and disadvantages of series inductor (L) filter

Advantages:

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

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

Disadvantages:

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

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• The series inductor (L) filter is bulky and more costly.
• 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 RL.
• It produces audible noise.