Did I get wrong?

Hi,

I'm a bit confused here. When you say "This forward bias arrangement between the base and emitter allows electrons to flow from the base pin to the N-region connected to the emitter (like a diode)", don't you mean "This forward bias arrangement between the base and collector allows electrons to flow from the base pin to the N-region connected to the emitter (like a diode)"?

I appreciate your help,

Ricardo


randofo6 months ago

The flow of current from the base to the emitter activates the P-region and allows current to flow from the collector to the emitter. The base and the collector are not forward-based in an NPN transistor.

The collector being an N-junction and the base being a P-junction, would make it an NP junction. This is reverse biased, not forward biased.

Basically, the electricity at the base shrinks the P-region proportional to the current being applied and allow a proportional amount of electricity to flow from the one N-region, through the P-region and to the other N-region.