A bandpass filter circuit
Source: InternetPublisher:supremeOne Keywords: band pass filter filter circuit high pass filter input impedance Updated: 2020/01/27
In the band-pass filter, the high-pass filter can be placed after the low-
pass filter, as shown in Figure 6-20. Both combinations can obtain the correct response curve, but
connecting the low-pass filter after the high-pass filter will cause the input impedance of the band-pass filter to drop to a very low value. In order to make
the input impedance of the band-pass filter reach a suitable value, the low-pass filter can be placed before the high-pass filter , so that the response
curve and input impedance can meet the requirements.
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