# DC Analysis of Transistor and DC Load Line

1. For the common emitter circuit shown below (see figure 1) the parameters are:VBB = 4 V, RB = 220 kΩ, RC = 2 kΩ, VCC = 10 V, VBE(on) = 0.7 V, and β = 200. Calculate the base current (IB), collector current (IC), emitter currents (IE), the VCE voltage and the transistor power dissipation (PT). Show all work.

Figure 1

2. In the CC circuit shown in Figure 2, calculate the following:
• IB
• IE
• VCE
• VE
• VB. Take β = 49 and VBE = 0.7 V.

Figure 2

3. For the circuit shown in Figure 3 below, draw the DC load line and locate its quiescent or DC working point. Show all work.Figure 3
4. The data sheet entry that lists how much the power rating of a device has to be reduced is the__________________.
5. In a common-emitter circuit, once the base current has been calculated, collector current can be determined by multiplying the base current by ________.

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