Timeline for Does collector feedback bias work like this in real life?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 11, 2022 at 13:02 | comment | added | Andy aka | You might also be interested in this answer that clearly shows why emitter degeneration (adding an emitter resistor) is a pretty useful thing to consider as the best method of stabilizing a BJT circuit @Heroz | |
| Oct 11, 2022 at 9:16 | comment | added | Andy aka | OK, that's fine. Do you know anything much about negative feedback? The problem of trying to explain how this circuit works is that I could waste pages of explanation on stuff you already know but, you could say to me "assume I know nothing" and then I'll have to do pages and pages of stuff on ohms law and other basic transistor circuits before moving to the one above. Pitching this just right is the difficult thing hence, why I suggested you raise a new question. | |
| Oct 11, 2022 at 9:04 | comment | added | Heroz | @Andyaka... I'm sorry . I did not mean to deselected it to motivate you answer me but I'm not sure in answer because I still not understand how it works . I think maybe it's as you said " in analogue world things don't happen in quanta " . I'm dig too deep it doesn't matter in analogue world right? Do you have any advice to understand circuit? thank you. | |
| Oct 11, 2022 at 8:38 | vote | accept | Heroz | ||
| Oct 11, 2022 at 8:32 | comment | added | Andy aka | @Heroz initially you accepted an answer I gave on a different question then, yesterday you deselected it. How do you think this motivates me to help you? The explanation of stabilization using a feedback resistor is not trivial and therefore is deserving of a new question. | |
| Oct 11, 2022 at 8:27 | comment | added | Heroz | @Andyaka Sorry for ask you many question . Could you explain me how Rb( feedback resistor ) stabilize this circuit? | |
| Oct 4, 2022 at 17:41 | comment | added | Andy aka | Nothing changes instantaneously either and I cannot tell you why they used a sequential kind of explanation without some overriding words that explain that sequential explanations are useful but things don't happen in quanta in the analogue world. | |
| Oct 4, 2022 at 16:58 | comment | added | Heroz | I have one doubt Quote"In the analogue world, nothing works sequentially" but why they explained in sequentially events. When beta change circuit change instantaneously right ? | |
| Oct 4, 2022 at 12:20 | comment | added | Andy aka | No circuit solves any of Kirchhoff's equations; the equations are just mathematical concepts to help us predict currents and voltages @Heroz (sorry if that disappoints) | |
| Oct 4, 2022 at 12:10 | comment | added | Heroz | I'm sorry . This is what I mean. Quote"In the analogue world, nothing works sequentially" , does that mean In physical reality when beta change the circuit essentially solves the KVL and KCL equations at once right ? It's not work sequentially and why they explained in sequential events ? | |
| Oct 4, 2022 at 11:26 | comment | added | Andy aka | @Heroz I'm sorry but I didn't understand your questions in your comment. | |
| Oct 4, 2022 at 10:21 | comment | added | Andy aka | @LvW yes, I know what you mean; it's a double-edged sword. Maybe there's a better word than stabilizer..... | |
| Oct 4, 2022 at 10:10 | comment | added | LvW | Andy aka is negative feedback really a "great stabilizer"? For opamps negative feedback always reduces the stability margin (against dynamic stability). | |
| Oct 4, 2022 at 8:59 | comment | added | Andy aka | In the analogue world, nothing works sequentially @Heroz <-- there are no discrete time steps. | |
| Oct 4, 2022 at 0:50 | comment | added | Heroz | Thank you. In physical reality if I measure does it work sequentially as above? | |
| Oct 3, 2022 at 17:42 | comment | added | Andy aka | Negative feedback is good at reducing the effects of things like this @Heroz | |
| Oct 3, 2022 at 16:15 | comment | added | Heroz | I have a question. this is what I understand when beta increase Ic try to increase but when Ic increase it makes Vce drop and also Vbe. So Ib decrease and it tries to keep Ic current from rising right? | |
| Oct 3, 2022 at 14:50 | history | answered | Andy aka | CC BY-SA 4.0 |