Question
Download Solution PDFThe function of an inductor in a filter circuit is to ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Inductors are used to block AC while allowing DC to pass through it, inductors designed for this purpose are known as chokes.
- The Inductor ‘L’ is connected in series between the rectifier circuit and the load. The inductor carries the property of opposing the change in current that flows through it.
- In other words, the inductor offers high impedance to the ripples and no impedance to the desired dc components. Thus the ripple components will be eliminated.
- When the rectifier output current increases above a certain value, energy is stored in it in the form of a magnetic field and this energy is given up when the output current falls below the average value.
- Thus all the sudden changes in current that occurs in the circuit will be smoothened by placing the inductor in series between the rectifier and the load.
- Inductors are generally used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.
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