Question

1. An amplifier has a voltage gain Av equal to 20. An input voltage v of 150 mVs applied to the input of the amplifier. What is the output voltage vo? Rs 2. For the amplifier in Problem 3, assume the input current i is 2 mA, and the output current io is 10 mA. What is the current gain A, ? Assuming the amplifier as described above has an output resistance is 0 ohms, what is the load resistance R? 3. 4. For the amplifier of Problem 3 and 4, what is the power gain Ap 2 5. For the amplifier in Problem 3 and 4, give the current gain in dB. 6. For the amplifier in Problem 3 and 4, give the voltage gain in dB. 7. For the amplifier in Problem 3 and 4, give the power gain in d8. 8. For the same amplifier referenced in problem 9 above, suppose it has been determined that the power into the amplifier from the input signal source is 200 uW and the power supply for the amplifier provides 9 volts with a power supply current of 31 mA. What is the efficiency of the amplifier?
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