Emitter, Collector, Transistors...?

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missfangula

Joined Sep 14, 2010
9
Hello All,

I am currently stuck on a circuits homework problem...the book is not much help, and I cannot find anything online similar to the circuit I am having to understand, so any insight is much appreciated.

I have a circuit with two resistors, Rb, and Re, Rb connected to ground V and to transistor, and Re connected to the same transistor and to -15 V voltage source. The collector end of the transistor is connected to a +15 V.

What is Vb, Ve, and Vc (base, emitter, and collector voltage drop)?

Thanks in advance!

-miss fangula
 

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Georacer

Joined Nov 25, 2009
5,182
First, let setup our set of equations:

We have:
\(I_E=\beta \cdot I_B \ and\\
0=I_B \cdot R_B +0.7+I_E \cdot R_E -15\ \text{according to Kirchoff's Voltage Law for the mesh I have indicated}\)

Do you understand on what ground I have written these equations? Can you solve the system yourself? As for the Vc, you can see for yourslef that it is connected to the voltage supply, making it 15V.
 

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