# Common emitter amplifier circuit using feedback biasing

• Engineering
i don't have the basic of analog, but i tried to look for in the books. unfortunately, the books are using voltage divider biasing instead of feedback biasing.

i have a circuit like this:

http://www.mrnerdy.com/forum_img/BJTampfeedbackbiase.jpg

would anyone tell me the flow of the current in the circuit, and made gain possible?

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In DC, the caps are open circuits. Rc's current is given by

$$I = \frac {V_2 - V_c}{R_c}$$

Current going through Rb is given by

$$I_b = \frac {V_c - V_b}{R_b}$$

Since this is common emitter, then $V_e = 0$, then assume its forward biased then $V_b = 0.7$.

Current going into the collector is

$$I-I_b = \beta I_b$$