OpAmp Waveform w/ Same Inputs: What is it?

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Homework Statement


Circuit:
Hand-drawn op-amp circuit: Vi feeds the inverting input, a resistor connects output back to inverting input, the non-inverting input goes to ground through a resistor, output labeled Vo.


Both inputs are connected to a person's wrists (we tried it with fingers too).
The resistors are both 1Mohm

"What is the name of the resulting waveform?"

The Attempt at a Solution


All we saw is noise and something that looked like a triangle function (jagged zigzag type thing). I'm not sure we did this right and I was just wondering if this setup is called something specific that I could possible look up.
 

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Melawrghk said:

Homework Statement


Circuit:
Op-amp circuit schematic with input Vi applied to the inverting input and a resistor from output to inverting input; non-inverting input grounded through a resistor, output labelled Vo with plus and minus polarity marks.


Both inputs are connected to a person's wrists (we tried it with fingers too).
The resistors are both 1Mohm

"What is the name of the resulting waveform?"

The Attempt at a Solution


All we saw is noise and something that looked like a triangle function (jagged zigzag type thing). I'm not sure we did this right and I was just wondering if this setup is called something specific that I could possible look up.

What do you mean connected to the wrists? One to each wrist? How did you make connection? Were you trying to get some sort of differential ECG measurement? EMG?

If you just hard short the two inputs together in the figure shown, then you will just amplify the Input _____ Voltage by some gain? What goes in the blank, and what gain multiplies it? What output voltage would that give you approzimately?

BTW, what are the power supply inputs for the opamp, how is it bypassed, and what is the goal of the circuit?