I am using the Sparkfun Development kit based on AD8232 for acquiring the ECG signal from the body. Sparkfun Kit. Now I am getting a perfect ECG signal when I turn off all the power in the house and then view the signal; however this is far from my practical scenario. So I have been looking into designing a Notch filter to remove the PL frequency (50-60Hz). I have tried the following, without success:
- Notch filter I have tried more but I am unable to post links; apparently I don't have enough repo. Anyway, I would appreciate it if someone can shed some light in this regard. I have tried Twin T notch with 2 opamps as well. Nothing seems to help.