1. QUESTION 1-1
Determine the maximum operating frequency for the circuit in Fig. 1-1(a) when the output voltage appears as shown in Fig. 1-1(b).
V1 = 2 V
R1 = 8 V
Rf = 80 Ω Vo
(a)
(b)
Figure 1-1

2. QUESTION 1-2
Determine the maximum operating frequency for the circuit in Fig. 1-2 when slew rate, SR = V/μs. V1
I1 = 100 mA
Rf = 80 Ω Vo
Figure 1-2

3. QUESTION 1-3
Find the CMRR and the maximum operating frequency for the circuit in Fig. 1-3 when Acm = 0.01, Rf = 80 Ω, R1 = 8 Ω, SR = V/μs.
Figure 1-3

4. QUESTION 1-4
Calculate the output voltage, Vo of an op-amp in Figure 1-3 at t = 5 ms when R1 = 2 Ω, R2 = 18 Ω, f = 50 Hz and Vs = 100 sin ωt mV.
Figure 1-3

5. QUESTION 2-1
Refer to Figure 2-1, express the equation for output voltage of a summing amplifier is as follows:
Figure 2-1

6. QUESTION 2-2
If a summing amplifier like the one in Figure 2-1 has the following values: Rf = 1 kΩ, R1 = R2 = R3 = 3 kΩ, V1 = 2 V, V2 = 1 V, and V3 = 6 V.
Figure 2-1

7. QUESTION 2-3
Find the values of Upper Trigger Point (UTP) and Lower Trigger Point (LTP) of an inverting comparator with hysteresis if known that R1 = 0.5R2 and Vout max = ±15 V.
Figure 2-1

8. QUESTION 2-4
The input of an integrator circuit is a square waveform of ± 8 V. If given the input resistance, R = 20 kΩ, permittivity of free space of the capacitor, εo = 8.85 x C2/(N.m2), plate area, A = 100 mm and distance between two plates, d = 1 mm, calculate the rate of change in output voltage.
Figure 2-1

9. QUESTION 3-1
Figure 2-4 shows a feedback amplifier. Given the gain without feedback, A = -140 and β = -0.2, and input impedance without feedback, Zi = 58 kΩ and output impedance without feedback, Zo = 87 kΩ. For voltage-shunt connections, calculate
(a) the voltage gain with feedback, Af
(b) the input impedance with feedback, Zif
(c) the output impedance with feedback, Zof
Figure 2-1

10. QUESTION 3-1
Figure 3-1