# 5.7 Exercises

## Analysis Problems

- Determine the load voltage for the model of Figure 5.7.1 if V
_{gen}= 10 mV, Z_{gen}= 50 Ω,

Z_{in}= 1 MΩ, Z_{out}= 75 Ω, Z_{load}= 1 k Ω and A_{v}= 50. - Determine the load voltage for the model of Figure 5.7.1 given
*V*= 8 mV,_{gen}*Z*= 1 k Ω,_{gen}

*Z*= 6 kΩ,_{in}*Z*= 500 Ω,_{out }*Z*_{load}_{ }= 2 k Ω and*A*= 100._{v} - If the circuit of Problem 1 has a compliance of 2 volts, will the output clip? What if the input is increased to 100 mV?
- If the circuit of Problem 2 has a compliance of 5 volts, will the output clip? What if the input is increased to 200 mV?
- If an amplifier has
*A*= 25,_{v}*V*= 20 mV and there is no appreciable loading, determine the output signal-to-noise ratio if the amplifier generates an output noise voltage of 10 µV._{in} - Determine which waveforms from Figures 5.7.26 through 5.7.6 exhibit halfwave symmetry.

- Determine the Miller equivalent resistances for the circuit of Figure 5.7.7

if*A*= −20 and_{v}*R*= 60 kΩ. - Determine the Miller equivalent capacitances for the circuit of Figure 5.7.8

assuming*A*= −30 and_{v}*C*= 200 pF.

## Challenge Problems

- If the circuit of Problem 1 has a compliance of 20 volts, how large can the input signal be before the load voltage is clipped?
- If the circuit of Problem 2 has a compliance of 10 volts, how large can the input signal be before the load voltage is clipped?
- Using Figure 5.7.7 as a guide and assuming that
*R*= 100 kΩ, how large would the gain have to be such that the input equivalent resistance is 4 kΩ? - Using Figure 5.7.8 as a guide and assuming that
*A*= −35, determine a value for_{v}*C*such that the input equivalent capacitance is 1.2 nF.

## Computer Simulation Problems

- Simulate the circuit of Problem 1 and verify the load voltage.
- Simulate the circuit of Problem 2 and verify the load voltage.