Note: Vb is negative
Notice that if the base-emitter voltage (VBe) and the base Voltage (VB) are much less than
The Voltage of Voltage source Vee, then the emitter current is practically dependent upon Vee and Re Therefore,
IE ≅ V_EE/R_E
And the transistor parameters have very little effect on the emitter current. The collector current (Ic) can be estimated from the emitter current (IE) as follows:
IC = IE- IB ≅ IE