Timeline for General Formula for the inputs to an op-amp?
Current License: CC BY-SA 4.0
21 events
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| Apr 29 at 20:54 | comment | added | 5eamus | @TannerSwett Sorry the question is poorly worded. I just meant how you know if you are interested in the voltage across R1 or Rf. I understand now that the voltage dropped across Rf is the contribution from Vin, and vice versa for V0. :) | |
| Apr 29 at 20:52 | history | edited | 5eamus | CC BY-SA 4.0 |
deleted 7 characters in body
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| S Apr 29 at 20:47 | vote | accept | 5eamus | ||
| Apr 29 at 15:57 | answer | added | Simon Fitch | timeline score: 1 | |
| Apr 29 at 10:57 | comment | added | Sophie Swett | "I am struggling to understand how you deduce which voltage divider you are meant to look at." – I'm not sure what you mean by this. It looks to me like the circuit you posted has exactly one voltage divider, and the one you're meant to look at is that one. | |
| Apr 29 at 10:37 | history | edited | 5eamus | CC BY-SA 4.0 |
added 7 characters in body
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| Apr 29 at 10:17 | answer | added | Circuit fantasist | timeline score: 0 | |
| Apr 28 at 23:34 | comment | added | Circuit fantasist | In the formulas above, swap Vo and Vin. | |
| S Apr 28 at 16:08 | vote | accept | 5eamus | ||
| S Apr 29 at 20:47 | |||||
| S Apr 28 at 16:08 | vote | accept | 5eamus | ||
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| S Apr 28 at 16:08 | vote | accept | 5eamus | ||
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| S Apr 28 at 16:05 | vote | accept | 5eamus | ||
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| Apr 28 at 15:37 | answer | added | Justme | timeline score: 1 | |
| S Apr 28 at 15:30 | history | suggested | Knowledge Seeker | CC BY-SA 4.0 |
Just making it look readable
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| Apr 28 at 15:28 | review | Suggested edits | |||
| S Apr 28 at 15:30 | |||||
| Apr 28 at 15:18 | comment | added | Jack Black | The answer is actually calculating the transfer function from one node to another. The transfer function from Vin to V- is Rf/(Rf+R1) in this case, but there' no general formula describing this - it all depends on the topology. | |
| Apr 28 at 15:15 | vote | accept | 5eamus | ||
| S Apr 28 at 16:05 | |||||
| Apr 28 at 15:08 | answer | added | Knowledge Seeker | timeline score: 0 | |
| Apr 28 at 14:51 | history | edited | 5eamus | CC BY-SA 4.0 |
edited body
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| S Apr 28 at 14:50 | review | First questions | |||
| Apr 28 at 15:15 | |||||
| S Apr 28 at 14:50 | history | asked | 5eamus | CC BY-SA 4.0 |