Electric Circuits II
National Cheng Kung University
Spring 2023
Prof. Kuang-Wei Cheng
Assignment #2
Due Tuesday, Mar. 14, 2023
------------------------------------------------------------------------------------------------------------------------Problem 1: (10%)
For each of the circuits in Fig. 1, find Vo/Vi for ω = 0, ω → ∞, and ω2 = 1/LC.
Fig. 1
Problem 2: (20%)
Use nodal analysis to find 𝑽𝒙 in the circuit shown in Fig. 2. The answer should be represented
as polar form.
Fig. 2
Problem 3: (20%)
Using mesh analysis, obtain 𝑰𝒐 in the circuit shown in Fig. 3. The answer should be represented
as polar form.
Fig. 3
1
Problem 4: [PSpice] (25%)
Use PSpice to find 𝑽𝟏 , 𝑽𝟐 , and 𝑽𝟑 in the network of Fig. 4. Assume 𝜔 = 1 𝑟𝑎𝑑/𝑠.
Fig. 4
Problem 5: [MATLAB] (25%)
Obtain 𝒗𝟏 (𝒕) and 𝒗𝒐 (𝒕) for the op amp circuit in Fig. 5. if 𝒗𝒔 = 𝟏𝟐𝐜𝐨𝐬(𝟏𝟎𝟎𝟎𝒕 − 𝟔𝟎°)𝑽. Use
Matlab to verify your answer.
Fig. 5
2