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20/07/2021

Types of Filter

 Filter

  • An electronics filter is a circuit which allows specific band of frequencies whereas blocks frequencies outside of the band.

Classification of Filter


1

Active

2

Passive

3

Analog

4

Digital

5

Audio Frequency

6

Radio Frequency

 

Active Filter

  • It is a filter in which OP – Amp / transistor is used in associated with resistors and capacitors.

Passive Filter

  • It is a filter in which resistors, capacitors and inductors are used.

Analog Filter

  • It is a filter which process analog signals.

Digital Filter

  • It is a filter in which analog signal used for digital techniques.

Audio Frequency Filter

  • It is a filter which allows only audio frequencies whereas reject all other frequencies. 
  • The RC filter is generally used for audio or low frequency range.

Radio Frequency Filter

  • It is a filter which allow only radio frequencies whereas reject all other frequencies. 
  • The LC filter is generally used for RF frequency or high frequency range.

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