Olimex EKG/EMG output signal filtered by RC 40Hz low pass and MAX292 25Hz low pass filter

Now I am using the MAX292 25Hz low pass to filter the RC 40Hz low pass output.  The 50Hz noise is reduced from 1Vpp to 300mVpp.  All the 1.5Vpp spikes are removed.

So far so good.  Time to take a break.

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