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本文提出一个只用电阻和运算放大器的R有源滤波器的新电路。该电路的特点是:具有四个输出端,可实现多种功能[低通(LP)、带通(BP)、高通(HP)、带阻(BS)和全通(AP)],且灵敏度低,工作稳定。在其中的两个输出端上(V_(01)和V_(03)或V_(02)和V_(03),可实现上述五种功能,除V_(04)外,每个输出端至少可实现两种功能。文中给出了设计方程、运用极限和实验。实验结果证实了理论的正确性。
This paper presents a new circuit using only R-active filters for resistors and op-amps. The circuit features four outputs for various functions (LP, BP, HP, BS and AP), and the sensitivity Low, stable job. At these two outputs, V_ (01) and V_ (03) or V_ (02) and V_ (03), the above five functions can be implemented, with the exception of V_ (04) Two kinds of functions are given.The design equations, application limits and experiments are given.The experimental results confirm the correctness of the theory.