1. Figure 7-42 shows a CE power amplifier in which the collector resistor serves also as the load resistor. Assume Bpc = Bac = 100. (a) Determine the de Q-point (/co and Vero). (b) Determine the voltage gain and the power gain.

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1. Figure 7–42 shows a CE power amplifier in which the collector resistor serves also as the load
resistor. Assume Bpc = Bac = 100.
(a) Determine the de Q-point (Icq and VcEQ).
(b) Determine the voltage gain and the power gain.
+Vcc
+15 V
R
100 0
0.5 W
1.0 kf
22 uF
ReI
8.2 1
V
500 mV pp
R2
330 N
1.0 kHz
36 A
100 µF
2. For the circuit in Figure 7-42, determine the following:
(a) the power dissipated in the transistor with no load
(b) the total power from the power supply with no load
(c) the signal power in the load with a 500 mV input
3. Refer to the circuit in Figure 7-42. What changes would be necessary to convert the cirecuit to a
pnp transistor with a positive supply? What advantage would this have?
4. Assume a CC amplifier has an input resistance of 2.2 kl and drives an output load of 50 N.
What is the power gain?
5. Determine the Q-point for each amplifier in Figure 7–43.
Transcribed Image Text:1. Figure 7–42 shows a CE power amplifier in which the collector resistor serves also as the load resistor. Assume Bpc = Bac = 100. (a) Determine the de Q-point (Icq and VcEQ). (b) Determine the voltage gain and the power gain. +Vcc +15 V R 100 0 0.5 W 1.0 kf 22 uF ReI 8.2 1 V 500 mV pp R2 330 N 1.0 kHz 36 A 100 µF 2. For the circuit in Figure 7-42, determine the following: (a) the power dissipated in the transistor with no load (b) the total power from the power supply with no load (c) the signal power in the load with a 500 mV input 3. Refer to the circuit in Figure 7-42. What changes would be necessary to convert the cirecuit to a pnp transistor with a positive supply? What advantage would this have? 4. Assume a CC amplifier has an input resistance of 2.2 kl and drives an output load of 50 N. What is the power gain? 5. Determine the Q-point for each amplifier in Figure 7–43.
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