TIDA-01527: 手动修改代码中激磁频率为10k后，EXC波形出现失真情况，如何解决？

你好，参考下工程师的回复：

I believe you need to play with the cut-off frequency of the MFB filter. Please take a snapshot from of the EXC+ and EXC- signals with the reference to ground. Use the in-built function in the oscilloscope to do the delta (Math Ch1-Ch2). It provides clearer picture.

For the filter cut-off frequency change, use http://sim.okawa-denshi.jp/en/OPtazyuLowkeisan.htm . This online tool helps you to quickly evaluate new values of C3 and C4. Set the frequency to ~20 kHz.