BJT Amplifiers - The Common-Collector Amplifier

5 important questions on BJT Amplifiers - The Common-Collector Amplifier

Determine the exact voltage gain for the unloaded emitter-follower in Figure 6–55.

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What is the total input resistance in Figure 6–55? What is the dc output voltage?

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A load resistance is capacitively coupled to the emitter in Figure 6–55. In terms of signal op eration, the load appears in parallel with RE and reduces the effective emitter resistance.
what value of RL will cause the voltage gain to drop to 0.9?

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For the circuit in Figure 6–56, determine the following:
(a) Q1 and Q2 dc terminal voltages
(b) overall βac
(c) re' for each transistor
(d) total input resistance

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Find the overall current gain Ai in Figure 6–56.

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