- Section 2 Contains A Few Ltspice Problems These Should Be Completed In Ltspice Even Though The Examples Say Pspice 1 (91.17 KiB) Viewed 34 times
Question 13: Question 15: SP 5-3 Use PSpice to find the Thévenin equivalent circuit SP 6-3 A circuit with its nodes identified is shown in Figure for the circuit shown in Figure SP 5-3. SP 6-3. Determine V34, V23, V50, and io. Answer: Voc = -2 V and R, = -8/312 0.7502 10 k 2 10 ΚΩ. 30 ΚΩ 6 V m w 822 W- 30 ΚΩ 30 ΚΩ 10 ΚΩ 6 V va 4Ω + + 30 k12 Vo Figure SP 5-3 (10 MARKS] Question 14: P 5.8-1 The circuit shown in Figure P5.8-1 is separated into two parts by a pair of terminals. Call the part of the circuit to the left of the terminals circuit A and the part of the circuit to the right of the terminal circuit B. Use PSpice to do the following: (a) Determine the node voltages for the entire circuit. (b) Determine the Thévenin equivalent circuit of circuit A. (c) Replace circuit A by its Thévenin equivalent and determine the node voltages of the modified circuit. (d) Compare the node voltages of circuit B before and after replacing circuit A by its Thévenin equivalent. W- 602 Figure SP 6-3 Bridge circuit. (10 MARKS] Question 16: SP 8-4 The circuit shown in Figure SP 8-4 is at steady state before the switch closes at time t = 0. The input to the circuit is the current of the current source, 4 mA. The output of this circuit is the current in the inductor, i(t). Use PSpice to plot the output iſt) as a function of t. Use the plot to obtain an analytic representation of i(t) for 1 > 0. Hint: We expect i(t) = A + Be=t for > 0, where A, B, and 1 are constants to be determined. 10 Ω 40 Ω 1 = 0 10 22 10Ω 10. 15 Ω 2003 Jill) W 15V 250 mA 122 4 mA 1 ko 5 mH Figure P 5.8-1 Figure SP 8-4 (10 MARKS] (10 MARKS]