Hey everyone, Im struggling and require your assistance!
From my lecture notes, I have two equations:
\(ic1 = \frac{\alpha.I_E_E}{1 + exp{\frac{-v_d}{V_t}}}\)
and
\(ic1 = \frac{\alpha.I_E_E}{1 + exp{\frac{v_d}{V_t}}}\)
I also have a common base current gain equation:
\(\alpha.IE_E = i_c_1 + i_c_2\)
First i would like to know what the words "...and the transistor Q1 has 4 times the emitter junction area of Q2". From the attached question. Am I correct to say that 4Ic1 =Ic2 or the otherway around? If so, should I just substitute this into the common base current gain? Im not sure what the value of vd is for the other equations which is why I dont want to use them..even though a value of alpha has been given.
thanks for reading my post of confusion!
From my lecture notes, I have two equations:
\(ic1 = \frac{\alpha.I_E_E}{1 + exp{\frac{-v_d}{V_t}}}\)
and
\(ic1 = \frac{\alpha.I_E_E}{1 + exp{\frac{v_d}{V_t}}}\)
I also have a common base current gain equation:
\(\alpha.IE_E = i_c_1 + i_c_2\)
First i would like to know what the words "...and the transistor Q1 has 4 times the emitter junction area of Q2". From the attached question. Am I correct to say that 4Ic1 =Ic2 or the otherway around? If so, should I just substitute this into the common base current gain? Im not sure what the value of vd is for the other equations which is why I dont want to use them..even though a value of alpha has been given.
thanks for reading my post of confusion!
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