I found this in an old thread here: https://www.electro-tech-online.com/threads/transistor-biasing-question.113993/I don't know of any such thing as "voltage biasing" of a bjt. It would be thermally unstable. Nobody ever controls Vbe directly. We emitter current bias the device. We do not base current bias the device because of beta dependency.
Does this mean that a battery is connected beween B and E?
Can you make clear about "thermally unstable"?
I think I know what does "voltage biasing" mean now but I curious about the case as Claude has thought. Why isn't it thermally stable?