这些电路都分别由两个运算放大器和几个电阻所组成，不需外接电容，其输出波形良好。

Those waveform generators whose output waveforms are quite good are composed of a couple of operational amplifiers and several resistors without any capacitors.

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本文简述了MF10开关电容滤波器的工作原理。介绍了利用MF10组成滤波器品质因数和外接电阻的计算方法。

This paper briefly introduces the principles of MF10 switched capacitor filter andpasentes the method of computing quality factor and external resistors.

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适合于教学、会议、演出等各种电容麦克风使用场合，具有低噪特别设计，不会因外接电源变化而产生各种噪音。

Suitable for various kinds of occasion for teaching, meeting, lecture etc, it 's low noise design. do not create noise because of the power supply change.

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