Question 3.4: As you saw earlier, a 2N3904 transistor has a βDC range from...

As you saw earlier, a 2N3904 transistor has a $β_{DC}$ range from 100 to 300. Assume a 2N3904 is used in the collector-feedback biased circuit shown in Figure 3–17 . Compute the minimum and maximum collector current based on this specification.

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Question: 3-17

What fault do the measurements in Figure 3–63 indicate? (The probe is shown in three different locations.) ...

The transistor is in cutoff, as indicated by the 1...
Question: 3.16

(a) For the transistor switching circuit in Figure 3–46, what is VCE when VIN = 0 V? (b) What minimum value of I B is required to saturate this transistor if βDC is 200? Assume VCE(sat) = 0 V. (c) Calculate the maximum value of RB when VIN = 5 V. ...

(a) When $V_{\mathrm{IN}}=0$ V, the t...
Question: 3.15

Find the total input resistance and voltage gain for the CB amplifier in Figure 3–44 . ...

Since the base is grounded, the emitter voltage is...
Question: 3.14

Find the total input resistance and the voltage gain for the CB amplifier in Figure 3–43 . ...

In order to determine $r_e^{\prime}$,...
Question: 3.13

Determine the total input resistance, Rin(tot) , and the approximate voltage gain and current gain to the load of the emitter-follower in Figure 3–40 . Assume the βac is 140. ...

Although $r_e^{\prime}$ can be ignore...
Question: 3.12

Draw the ac load line for the circuit in Figure 3–30 (a). ...

The dc load line for this circuit was shown in Fig...
Question: 3.11

Find Rin(tot) for the circuit in Figure 3–30(a). Assume the βac is 120. ...

The internal ac emitter resistance, r_e^{\p...
Question: 3.10

Find Av for the circuit in Figure 3–30(a). ...

The ac resistance in the emitter circuit, R...
Question: 3.9

Find the dynamic emitter resistance, r’e, for the circuit in Figure 3–30 (a). ...

First, find $I_{\mathrm{B}}$ so that ...