Exam 6: BJT Amplifiers

A CB amplifier has an advantage when you need

Figure 4 -Refer to Figure 4. The arrangement of transistors is called a

Figure 5 -Refer to Figure 5. The overall voltage gain of the amplifier in dB is

Figure 1 -Refer to Figure 1. To calculate the input resistance looking in at Vin, dc sources are replaced with

Figure 7 -Refer to Figure 7. Assume an identical signal is applied to input- 1 and input- 2 and further assume that RC1 = RC2. For this case, the ideal output is

Figure 2 -Refer to Figure 2. If RE1 and RE2 were switched, the

A bypass capacitor normally should have high reactance.

Figure 6 Assume there is no loading effect of Q₂/Q₃ on Q₁ and R_L is the load. -Refer to Figure 6. The input resistance is approximately

A typical common- base (CB)amplifier has

Figure 1 -Refer to Figure 1. To calculate the input resistance looking in at Vin, you do not need to consider the value of

The ac emitter resistance, re', is

Figure 5 -Refer to Figure 5. Explain the purpose of R1 and R2

Figure 1 -Refer to Figure 1. If a large capacitor is placed in parallel with RE, the input resistance will

Figure 3 -Refer to Figure 3. The power delivered to RL is approximately

A differential amplifier should have a high common- mode rejection ratio.

Figure 3 -Refer to Figure 3. The power gain is approximately

Figure 7 -Refer to Figure 7. Assume output is taken between Vout1 and Vout2. This condition is a

Figure 4 -Refer to Figure 4. Assume each transistor has a fiac of 100. The overall fiac is

The internal emitter resistance of a transistor is a dc resistance.

Figure 2 -Refer to Figure 2. This circuit is an example of a