Timeline for Why is the output of a high-pass filter not 0 when the input is 0?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 30, 2021 at 6:00 | history | tweeted | twitter.com/StackElectronix/status/1355395334428614657 | ||
| Jan 26, 2021 at 16:59 | vote | accept | unity123 | ||
| Jan 26, 2021 at 3:54 | history | became hot network question | |||
| Jan 25, 2021 at 20:55 | review | Close votes | |||
| Jan 30, 2021 at 3:08 | |||||
| Jan 25, 2021 at 20:13 | answer | added | user16324 | timeline score: 11 | |
| Jan 25, 2021 at 20:10 | comment | added | Scott Seidman | Probably input offset voltage or input bias current | |
| Jan 25, 2021 at 20:07 | answer | added | Kuba hasn't forgotten Monica | timeline score: 3 | |
| Jan 25, 2021 at 20:06 | comment | added | unity123 | @ScottSeidman I tried it with an ideal op-amp and it got rid of the offset. What parameter in the datasheet would that offset link to? | |
| Jan 25, 2021 at 19:56 | history | edited | unity123 | CC BY-SA 4.0 | added 109 characters in body |
| Jan 25, 2021 at 19:56 | comment | added | unity123 | @BrianDrummond typical 350uV, max 1300uV. I have edited the question to include the datasheet. | |
| Jan 25, 2021 at 19:54 | comment | added | Linkyyy | Post a schematic. What are the voltage rails? +/- or just positive and ground? The opamp might be "rail to rail" but the output will never be all the way to the rail. Look up the specification in the datasheet. | |
| Jan 25, 2021 at 19:54 | comment | added | Scott Seidman | Try simulating with an ideal op amp to see if the offset goes away | |
| Jan 25, 2021 at 19:50 | review | First posts | |||
| Jan 27, 2021 at 1:16 | |||||
| Jan 25, 2021 at 19:48 | comment | added | user16324 | what's the input offset voltage of that opamp? | |
| Jan 25, 2021 at 19:46 | history | asked | unity123 | CC BY-SA 4.0 |