Sallen
Abandpassfilterallowssignalsbetweentwospecificfrequenciestopassbutattenuatessignalsoutsidethesefrequencies.Itcanbemadebyconnectinghigh-passandlow-passfiltersinacascade.,Itispossibletostudyquitegeneralizedexpressionsfortransferfunctions,butinorder...。參考影片的文章的如下:


