# Bipolar transistor

#### sabcam

##### New Member
Hello everyone,
I have a little issue here. I know it's not really hard but it has been a moment since I've worked with circuits like this and transistors, so I can't figure out this circuit...
The question is: In DC analysis, calculate the bipolar transistor's voltages Vb, Ve, Vc. Deduce the bias point (Vce, Ic).

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#### JimB

##### Super Moderator
OK, a few hints for you.

1 Assuming the transistor is silicon (not germanium), the base will be approximately 0.6v more positive than the emitter
2 Assuming the transistor has high gain, the base current will be very low and can be neglected.
3 Calculate the base voltage. Two resistors, voltage divider + Hint 2.
4 Calculate the emitter voltage (Hint 1).
5 Calculate the emitter current required to give the emitter voltage.
6 Now you know the collector current (Hint 2), you can calculate the collector voltage.

Does that help?

JimB

(Maybe this thread should be in the Homework Help section?)

#### sabcam

##### New Member
"Maybe this thread should be in the Homework Help section?" I didn't see that section but you're probably right.

Moved it!
JimB

#### MichaelaJoy

##### Active Member 