ECG PUBLIC

ECG machine.

ECG machine based on the ECG Measurement System page by Chia-Hung Chen, Shi-Gun Pan, and Peter Kinget.

Major modifications include the use of an AD620 instrumentation amplifier instead of the AC624 they used. I also fiddled with some resistor and capacitor values because I didn't have all the ones they did.

The Elec+ and Elec- nodes connect to two electrodes attached to my chest; a ground line runs from my leg to the ground of the circuit. The output is connected to the right channel of my computer sound card's Line In. All ground lines are connected to the sound card's ground line as well.