Hey. I can't understand something. It's about NPN transistor. If it's given a constant base voltage VB, emitter voltage VE and base emitter voltage VBE, then VB = VBE +VE. I can't understand why phisicaly an increase in VE while VB is const will cause a decrease in VBE. Can VBE even be reduced? And how is reducing VBE is reducind the conduction level of the transistor?