@CÔNGNGUYỄNDUY To be saturated, the emitter must be close to the collector. Suppose so. The base only has access to ground. The collector is at ground. The emitter is very near ground. There cannot be much base-to-emitter voltage, whether reverse or forward. But likely reverse as the emitter is slightly positive and the base only has access to ground. Does not this sound like a falsification? Even if the base were tied directly to ground, wouldn't that make the bjt just a diode? Would that be saturated? Just asking some questions.
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