Second-order active band-stop filter circuit
Source: InternetPublisher:子丑寅卯 Keywords: band stop filter filter circuit BSP Updated: 2021/07/08
A band-stop filter (BEF) composed of an integrated operational amplifier.
The performance of this circuit is opposite to that of a band-pass filter, that is, within a certain frequency band, the signal
cannot pass (or is greatly attenuated or suppressed), while at other frequencies range
, the signal can pass through smoothly.
A basic second-order active band-stop filter BEF
is formed by adding a first-level in-phase proportional operation circuit after the double-T network . The band stop filter is shown in the figure.
The integrated operational amplifier AJ in the picture uses dual operational amplifiers
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