Timeline for Opamp compensating circuit
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 23, 2019 at 10:39 | answer | added | analogsystemsrf | timeline score: 0 | |
| Sep 23, 2019 at 6:27 | comment | added | Bimpelrekkie | If you want to learn about opamps I recommend reading the free ebook, opamps for everyone: web.mit.edu/6.101/www/reference/op_amps_everyone.pdf and also watch the videos made by Dave from the EEVBlog: youtube.com/… | |
| Sep 23, 2019 at 6:25 | comment | added | Bimpelrekkie | This method is doing things more complicated than they need to so in my opinion this is a very bad example to show DC offset compensation. What they're doing is using a resistive divider circuit to add/subtract a DC voltage to the - input. It is easier to explain if this voltage was applied to the + input as then it will not interfere with the input signal. Using the opamp in open-loop (no feedback) like that only works in theory, try this with a real opamp on a bench and you'll notice how it is impossible to get the output at 0 V. Noise and thermal effects will prevent that. | |
| Sep 23, 2019 at 5:43 | history | asked | Bhuvnesh | CC BY-SA 4.0 |