Timeline for Why do we use this capacitor in the opamp and why do we superimpose it on the DC voltage and then destroy it again with the capacitor?
Current License: CC BY-SA 4.0
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| Nov 6, 2023 at 12:32 | comment | added | Neil_UK | @bevren15 basically yes. When you want a strictly 0 V - centred signal, then you have to shift the op-amp's working voltage to suit the signal, and use a +ve and -ve supply to the opamp. Shifting the signal is a good workaround if you need to match the signal to the opamp. | |
| Nov 6, 2023 at 12:12 | comment | added | bevren15 | I can't vote for you because I'm a new user, but I understand this part now. Thank you for your clarification. Can you confirm if I have understood correctly? Since the incoming signal is AC, if we had not aligned this signal to 2.5V, it would have cut the negative polarity of the signal because it could not fall below 0V, and a half-rectified positive polarity signal would be reflected at the output. By centering the signal, we were able to amplify and reflect it to the output without any interruption in the signal. | |
| Nov 6, 2023 at 11:53 | history | answered | Neil_UK | CC BY-SA 4.0 |