I have a common-emitter circuit as above. I need to find the value of Vbe and IC. The picture below is the equivalent large-DC analysis of the circuit.
Applying KVl
- Ic = (VTH - VBE)/((1/B)RTH+(B+1/B)RE)).
- Ic = Isexp(Vbe/Vt)
Where (from my calculations) Vth = 5 V and Rth = 29166 khms or 2.9 kohms.
I know I can find Vbe by iteration but I'm really lost as to how. I tried using Excel but the value I obtained was wrong.
Can anyone point out how I can obtain Vbe? I can't move forward to obtain the other small parameters if I can't determined the value of Vbe (I'm doing manual calculation.)
here's an example of my work [The values listed down are different, it's from another problem but basically, this is how I try to solve for Vbe].