Advantages of Active filters
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    Advantages of Active Filters


    Introduction :

    Active filters have manny advantages over Passive Filters which are following.

    » Low Cost :

    As a variety of cheaper OP-AMPs are easily available and the absence of inductor active filters,The active filters are more economical than passive filters.

    » Small Components :

    The component used in active filters are smaller in size as compare to passive fillers.


    » Gain & Frequency adjustment Flexibility :

    In active filters as an OP-AMP can provide a gain,the input signal is not attenuated and active filters are easy to tune so easy frequency adjustment is possible.


    » Passband Gain :

    It can be design to provide some passband gain .


    » No loading Problem :

    As OP-AMP has a high input resistance and low output resistance, active filters using OP-AMP do not load the input source (Load).


    » No insertion loss :

    It do not exhibit any insertion loss.


    » Interstage isolation and control of impedance :

    It also allow for interstage isolation control of input and output impedence.