Questions tagged [ecg]

An electrocardiogram (EKG or ECG) is a test of the characteristic electrical activity of your heart.

Filter by
Sorted by
Tagged with
10
votes
3answers
3k views

What does this op-amp circuit do? (part of an ECG)

I would like create an ECG circuit based on this schematic (from the AD620AN datasheet): I don't know this part of the circuit and how it works. I know this is called a right leg driven circuit which ...
0
votes
3answers
737 views

Parallel OpAmp configuration

I am finding it very strange what is the role of R1 in this circuit, and what would happen if I would just remove R1 along with ...
14
votes
4answers
2k views

Why would you put your input amplifier in front of your filtering for an ECG signal?

In this article at eetimes.com they show the signal chain for measuring an ECG. The raw signal of an ECG contains noise and offsets at least a magnitude larger than the real signal. (Some few mV ...