Hi...
I was here trying to solve an OpAmp problem, but I'm stuck.
I can't find a way of writing an equation for v_R1 in function of va and vb, which I know and confirmed to be equal to v1 (measured with the voltmeter).
I found v_R1 = (R1*vo)/(R1 + R2) and that vo = ((R1 + R2)*v_R1)/R1
By the OpAmp thumbsup rules, I know that the OpAmp will try everything it cans to keep v+ and v at the same potential, so v1 = v_R1.
Now, I need to get rid of v1 from the vo equation, but I can't find the way!
Any help would be appreciated!
I was here trying to solve an OpAmp problem, but I'm stuck.
I can't find a way of writing an equation for v_R1 in function of va and vb, which I know and confirmed to be equal to v1 (measured with the voltmeter).
I found v_R1 = (R1*vo)/(R1 + R2) and that vo = ((R1 + R2)*v_R1)/R1
By the OpAmp thumbsup rules, I know that the OpAmp will try everything it cans to keep v+ and v at the same potential, so v1 = v_R1.
Now, I need to get rid of v1 from the vo equation, but I can't find the way!
Any help would be appreciated!
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