2 May 2019

Advantages and disadvantages of active filters

An active filter is a group of electronics filters that will utilize active components like an amplifier for its functioning. This article gives information about the pros and cons of active filters to better understand this topic.

Advantages of active filters:
  • These filters are more responsible than passive filters
  • No resonance issue
  • It can eliminate any harmonics
  • Used for voltage regulation
  • Used for reactive power compensation
  • It provides reliable operation
  • It can be designed to provide some passband gain
  • No loading problem
  • Active filter using OP-AMP does not load the input load
  • It does not exhibit any insertion loss
  • It also allows for isolation control of input and output impedance
  • The component used in the active filter is the smaller size as compared to passive filter
Disadvantages of active filters:
  • It is expensive
  • It provides a complex control system
  • The active filter is only suitable for low or moderate frequencies
  • It can not handle a large amount of power
  • It requires DC power supply for their operation
  • This filter is limited in their frequency range