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请教NPN三极管类似LDO作用的计算



 电路如图,NPN三极管BC847。VIN=19V,经过电阻R36,R13分压后,基极B的电压为7V,三极管导通,工作在放大状态,发射极E(TP11)的电压是Vb-0.7V,还是Vc-Vce?