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 RL.
  • It produces audible noise.
  • It is bulky and more costly.

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