Timeline for What are the limits of the Ebers-Moll model for large currents?
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| Sep 14, 2022 at 21:00 | history | tweeted | twitter.com/StackElectronix/status/1570155453815865350 | ||
| Sep 14, 2022 at 15:39 | history | became hot network question | |||
| Sep 14, 2022 at 15:18 | vote | accept | ChristophK | ||
| Sep 14, 2022 at 13:19 | comment | added | jonk | IK is there and it gets interpreted as IKF. | |
| Sep 14, 2022 at 13:09 | comment | added | ChristophK | @jonk: I learnt the Ebers-Moll model from Horowitz and Hill in "The Art of electronics". Apparently they used a simplified version. For the model (of which you mentioned most values in your answer already): Rb=.81 Rc=.0856 Re=.000856 IK=1 (no IKF value in my model, don't know why) | |
| Sep 14, 2022 at 9:50 | answer | added | jonk | timeline score: 8 | |
| Sep 14, 2022 at 8:39 | comment | added | jonk | Also, be sure to check RB, RE, and RC in the model. | |
| Sep 14, 2022 at 8:31 | comment | added | jonk | What's the IKF for the 2N3055, for example? | |
| Sep 14, 2022 at 8:04 | comment | added | jonk | No, it's a lot more than you imagine. The -1 is negligible. You can ignore it. It has no perceptible impact on your observations. | |
| Sep 14, 2022 at 8:03 | comment | added | ChristophK | You're probably right, didn't pay much attention looking up the exact equation ("-1" term missing, maybe something more). Anyway, I think the question also applies to the correct Ebers-Moll equation. | |
| Sep 14, 2022 at 7:58 | comment | added | jonk | That's not the entire Ebers-Moll equation. See here for the level 1 version (DC only.) There are three equivalent models. (Mathematically equivalent.) Shown there. You will also need to include the entire circuit in your analysis. This includes the diode. Finally, Spice programs use a rather more sophisticated model that includes operation in various current regions. See here. | |
| S Sep 14, 2022 at 7:37 | review | First questions | |||
| Sep 14, 2022 at 7:45 | |||||
| S Sep 14, 2022 at 7:37 | history | asked | ChristophK | CC BY-SA 4.0 |