Traditional Culture Encyclopedia - Traditional stories - Traditional band-pass filter series
Traditional band-pass filter series
The bandpass filter in the figure consists of a low-pass filter and a high-pass filter.
Set the cutoff frequency fH of the low-pass filter to 6kHz and the cutoff frequency fL of the high-pass filter to 20Hz.
Order:
fH= 1/2πRC=6000Hz
fL= 1/2πR2C=20Hz
Take C=0. 1uF.
You can calculate
r≈270ω
R2≈80000ω= 80kω.
R 1 and Rf can be 1kω.
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