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Multifunctional Active Filter Circuit

2017-02-17 11:06  
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Multifunctional Active Filter Circuit
This circuit is composed of three operational amplifiers and resistance components, and its main characteristic is that it can get filtering properties of high-pass, low-pass and band-pass. In addition, once the values of Rf、Cf are changed, the bandpass characteristics can be ensured in a wide range without any interference between the circuit gain and the value of Q . This circuit is simple and easy to adjust . Also it is stable.