cyphunk
ECG
this is incomplete. An ECG based on a schematic from a Wright State University lab I described here. The Green/Yellow leeds going off screen are meant to connect to eletrodes, one on the wrist and the other on the foot. (a 3rd electrode should connect to ground). The AD620 IC Op-amp on the left handles initial gain. The lead from the larger capacitor (1000uF) can be put out to an oscilloscope and you should already see a heart sine wave. atm this leed goes to the first filter (the other IC in the picture). The two white wires are supposed to be a capacitor and resistor instead, but I do not have them on hand and need to get later. Finally, the orange wire going off the board is supposed to be the final output to an oscilloscope, with high,low and dual amplification having taken place. The grey wires are for negative and positive power sources. the resistor to the far left of the breadboard, is a 220ohm which can be removed.
ECG
this is incomplete. An ECG based on a schematic from a Wright State University lab I described here. The Green/Yellow leeds going off screen are meant to connect to eletrodes, one on the wrist and the other on the foot. (a 3rd electrode should connect to ground). The AD620 IC Op-amp on the left handles initial gain. The lead from the larger capacitor (1000uF) can be put out to an oscilloscope and you should already see a heart sine wave. atm this leed goes to the first filter (the other IC in the picture). The two white wires are supposed to be a capacitor and resistor instead, but I do not have them on hand and need to get later. Finally, the orange wire going off the board is supposed to be the final output to an oscilloscope, with high,low and dual amplification having taken place. The grey wires are for negative and positive power sources. the resistor to the far left of the breadboard, is a 220ohm which can be removed.