Calculate Output Voltage of Op-Amp Circuit

Thread starter Number2Pencil
Start date Jan 10, 2007
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Circuit Op-amp Output Voltage

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The discussion revolves around calculating the output voltage of an op-amp circuit, with participants sharing their attempts and confusion regarding the circuit's configuration. Initial attempts involved using superposition and KCL, leading to uncertainty about the correct approach due to potential input mislabeling. Clarification was provided on the importance of negative feedback and the implications of switching the op-amp inputs, which could lead to instability and incorrect output values. Ultimately, a more conventional approach using established formulas yielded a calculated output voltage, but participants acknowledged the need for further practice and understanding of op-amp principles. The conversation highlights the challenges faced by beginners in mastering op-amp circuit analysis.

Jan 24, 2007

Number2Pencil

berkeman said:

Get the same answer with two different approaches, and you can feel good about your answer, right? And I'll bet you're starting to like the KCL better about now, right?

I felt pretty good about it until my professor said it was wrong...then checked his notes...then told me it was right (this kind of thing happened twice in lab!) it's the same professor who gave an unsolvable op-amp design test problem...I get the feeling I might have to come to this forum for lots of help this semester lol. I hope I'm not wearing out my welcome.

But yeah, I like KCL because it's difficult to screw it up