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Single peak feature filter circuit

2017-02-11 03:48  
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Single peak feature filter circuit
Single peak feature filter circuit
The single peak feature filter circuit which is composed of the single op-amp is as shown in the figure. This circuit uses a op-amp and a few components to form the filter, it has the same features with the filter circuit that is composed of the LC components, if you do not change the circuit gain, you can adjust the resonant frequency easily. This circuit uses the potentiometer PR1 to adjust the resonance frequency. When the value of PR1 is from the maximum to the minimun, the resonance frequency adjustment range is: