Activity for LvW
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #278636 |
Here is a simple example which can explain my view regarding theory and practice: For finding the voltage across one of the resistors as part of a voltage divider we assume that the current I produces a voltage corresponding to V=I*R. This works always fine. But it is not in accordance with theory. T... (more) |
— | over 3 years ago |
| Comment | Post #278636 |
@Olin Lathrop. Sorry, but another comment is unavoidable: (Quote) "You can argue the physics both ways, since its not black and white." Both ways? I rather think that each observable physical effect has exactly one cause which clearly can be identified. Exception: Basic natural laws like gravity etc... (more) |
— | over 3 years ago |
| Comment | Post #278630 |
continue... As you have mentioned the Ebers-Moll model description: Exponential relation Ie=f(Vbe). Am I wrong? (more) |
— | over 3 years ago |
| Comment | Post #278636 |
@Circuit fantasist. "Compromise formulation": "...set the voltage across the base-emitter junction by passing an appropriate current through it". So - voltage results from current? What then is the role of the voltage divider at the base (less-resistive as possible/allowed)?
(more) |
— | over 3 years ago |
| Comment | Post #278636 |
My fault: I have tried to make a clear distinction between (a) practical aspects and (b) physical effects. It seems I did not sucseed. Many good books and many publications from leading US-universities have convinced me that the BJT is voltage-controlled. But that was not my question here (just an in... (more) |
— | over 3 years ago |
| Comment | Post #278630 |
@coquelicot. No - I cannot agree at all. However, I don`t intend to discuss again the question current vs. voltage control (show me one single proof that Ib would determine/control Ic). Regarding the emitter follower: It can be best explained starting from the feedback effect caused by RE: current-co... (more) |
— | over 3 years ago |
| Comment | Post #278613 |
Not "ideal" - but "idealized" and as "good" as possible with such a simple arrangement. (more) |
— | over 3 years ago |
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