Suppose that the current gain of the transistor in Fig. 29–41 is \beta = i_ C /i_ B = 85. If R_ C = 3.8 k \Omega, calculate the ac output voltage for an ac input current of 2.0 \; \mu A .

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Giancoli's Physics: Principles with Applications, 7th Edition

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Problem 35

Suppose that the current gain of the transistor in Fig. 29–41 is $\beta = i_\textrm{C}/i_\textrm{B} = 85$ . If $R_\textrm{C} = 3.8 \textrm{ k} \Omega$ , calculate the ac output voltage for an ac input current of $2.0 \; \mu \textrm{A}$ .

An npn transistor used as an amplifier. I_B is the current produced by E_B (in the absence of a signal), i_B is the ac signal current (= change in I_B).

Figure 29-41 An npn transistor used as an amplifier.

I_B

is the current produced by

\xi_B

(in the absence of a signal),

i_B

is the ac signal current (= change in

I_B

0.65 \textrm{ V}

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Suppose that the current gain of the transistor in Fig. 29–41 is β=iC/iB=85\beta = i_\textrm{C}/i_\textrm{B} = 85β=iC​/iB​=85. If RC=3.8 kΩR_\textrm{C} = 3.8 \textrm{ k} \OmegaRC​=3.8 kΩ, calculate the ac output voltage for an ac input current of 2.0 μA2.0 \; \mu \textrm{A}2.0μA.

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Suppose that the current gain of the transistor in Fig. 29–41 is $\beta = i_\textrm{C}/i_\textrm{B} = 85$ . If $R_\textrm{C} = 3.8 \textrm{ k} \Omega$ , calculate the ac output voltage for an ac input current of $2.0 \; \mu \textrm{A}$ .