State the advantages and disadvantages of series inductor and shunt capacitor filter.

1 Answer

Answer :

Advantages of series inductor filter

1. It has low ripple factor at heavy load currents (i.e. low load resistance)

2. It has no surge current through the diode.

3. It reduces the ripple in the DC output of rectifier circuit.

4. The L filter is suitable for heavy loads.

Advantages of Shunt Capacitor filter

1. It is easy to design.

2. It is small in size and cheap.

3. It has low ripple factor for heavy loads.

4. It has high output DC voltage for light loads.

5. It is suitable for light loads.

6. It has no load voltage equal to maximum transformer voltage.

Disadvantages of series inductor:

1. It is bulky and more costly.

2. It has poor voltage regulation.

3. It produces audible noise.

4. It is not suitable for light loads.

Disadvantages of Shunt Capacitor:

1. It has relatively poor voltage regulation.

2. It has high ripple factor for heavy loads.

3. It has low output voltages for heavy loads.

4. Ripple factor is dependent on the load.

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