# Question 12.7: Analysis of the Four-Resistor Bias Circuit Find the values o...

Analysis of the Four-Resistor Bias Circuit
Find the values of $I_C \text{ and } V_{CE}$ in the circuit of Figure 12.23 for β = 100 and β = 300.
Assume that $V_{BE} = 0.7 \text{ V}$.

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Question: 12.9

## Emitter-Follower Performance Compute the voltage gain, input impedance, current gain, power gain, and output impedance for the emitter-follower amplifier shown in Figure 12.31. Assume that the circuit operates at a temperature for which VT = 26 mV. ...

First, we must determine the bias point so the val...
Question: 12.8

## Common-Emitter Amplifier Find Av, Avoc, Zin, Ai, G, and Z o for the amplifier shown in Figure 12.28. If vs(t) = 0.001 sin(ωt), find and sketch vo(t) versus time. Assume that the circuit operates at a temperature for which VT = 26 mV. ...

First, we need to know $I_{CQ}$ to be...
Question: 12.6

## Analysis of a BJT Bias Circuit Solve for IC and VCE in the circuit of Figure 12.21(a) given that VCC = 15 V, VBB = 5 V, RC = 2 kΩ, RE = 2 kΩ, and β = 100. Repeat for β = 300. ...

We assume that the transistor is in the active reg...
Question: 12.4

## Analysis of the Fixed Base Bias Circuit The dc bias circuit shown in Figure 12.18(a) has RB = 200 kΩ, RC = 1 kΩ, and VCC = 15 V. The transistor has β = 100. Solve for IC and VCE. ...

We will eventually see that the transistor is in t...
Question: 12.3

## Determining the Operating Region of a BJT A given npn transistor has β = 100. Determine the region of operation if a. IB = 50 μA and IC = 3 mA; b. IB = 50 μA and VCE = 5 V; c. VBE = -2 V and VCE = -1 V. ...

a. Since $I_B \text{ and } I_C$ are p...
Question: 12.2

## Load-Line Analysis of a BJT Amplifier Assume that the circuit of Figure 12.7 has VCC = 10 V, VBB = 1.6 V, RB = 40 kΩ, and RC = 2 kΩ. The input signal is a 0.4-V-peak 1-kHz sinusoid given by vin(t) = 0.4 sin(2000πt). The common-emitter characteristics for the transistor are shown in Figure 12.9. ...

First, we must find values for $i_B$....
Question: 12.1