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实用新型
CN204349936U 一种滤波电路 有权

一种滤波电路
摘要：
本实用新型一种滤波电路，属于滤波技术领域；解决的技术问题是：提供一种滤波效果好并且成本较低的滤波电路；采用的技术方案是：一种滤波电路，电路结构为：电阻R1的一端与信号发生电路的信号输出端OP1相连，所述电阻R1的另一端并接电容C1的一端和电容C2的一端后与电阻R2的一端相连，所述电容C1的另一端并接电阻R3的一端后与运算放大器U1的负输入端相连，所述电容C2的另一端并接电阻R3的另一端后与运算放大器U1的输出端相连；本实用新型适用于电子技术领域。
摘要（英）：

The utility model discloses a filer circuit and belongs to the technical field of filtering. The technical problem is solved by providing a filter circuit which is good in filtering effect and low in cost. The adopted technical scheme is that the filter circuit has a structure in which one end of a resistor R1 is connected with an output end OP1 of a signal generation circuit; the other end of the resistor R1 is connected in parallel with one end of a capacitor C1 and one end of a capacitor C2 and then is connected with one end of a resistor R2; the other end of the capacitor C1 is connected in parallel with one end of a resistor R3 and then is connected with a negative input end of an operation amplifier U1; and the other of the capacitor C2 is connected in parallel with the other end of the resistor R3 and then is connected with an output end of the operation amplifier U1. The filer circuit is suitable for the field of electronic technologies.

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