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Sallen-Key low-pass and high-pass filters

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Sallen-Key low-pass and high-pass filters

Comparison of unity-gain Sallen-Key second-order active filters. Circuit (a) shows the low-pass configuration using resistors \(R_1,R_2\) and capacitors \(C_1,C_2\), while circuit (b) shows the corresponding high-pass configuration using capacitors \(C_3,C_4\) and resistors \(R_3,R_4\).

circuits · sallen-key · active-filter · low-pass-filter · high-pass-filter · op-amp · second-order-filter