ECE35 Win09 Homework 1 Solutions P1.5-4 a.) Assuming no more energy is delivered to the battery after 5 hours (battery is fully charged). 5 3600 t 5 3600 0.5 0.5 2 w Pdt vi d 2 11 d 22 t 0 0 3600 0 3600
= 441 103 J
441 kJ
b.) Cost = 441kJ
1 hr 10 3600s kW
ECE35 Win09 Homework 2 Solutions P3.3-4
P3.3-7 All of the elements are connected in series. Replace the series voltage sources with a single equivalent voltage having voltage 12 + 12 18 = 6 V. Replace the series 15 , 5 and 20 resistors by a single equival
ECE35 Win09 Homework 3 Solutions P4.2-4
Node equations:
When v1 = 1 V, v2 = 2 V
P4.3-2
Express the branch voltage of each voltage source in terms of its node voltages to get:
KCL at node b:
KCL at the supernode corresponding to the 8 V source:
so Conseque
ECE35 Win09 Homework 4 Solutions P5.2-3
Source transformation at left; equivalent resistor for parallel 6 and 3 resistors:
Equivalents for series resistors, series voltage source at left; series resistors, then source transformation at top:
Source transfo
ECE35 Win09 HW 6 Solutions Chapter 7: 7.4-4, 7.4-8, 7.5-5, 7.5-12, 7.5-13, 7.7-5, 7.8-1, 7.8-7 P7.4-4 Replacing series and parallel capacitors by equivalent capacitors, the circuit can be reduced as follows:
Then
P7.4-8 (a) The energy stored in the 60 mF
ECE35 Win09 HW 7 Solutions Chapter 8: 8.3-1, 8.3-3, 8.3-6, 8.3-10, 8.4-6, 8.6-8, 8.6-11. P8.3-1 Here is the circuit before t = 0, when the switch is open and the circuit is at steady state. The open switch is modeled as an open circuit. A capacitor in a s
QUIZ 1 ECE35 Win09 For the familiar circuit at right,
NAME _ SID _
(1) What is the resistance of the resistor R? R = _ (2) What is the voltage across the current source? V = _
Solutions: (1) Ohms law: R = V/i = 4.0/0.5 = 8 Note that the current flow is ri
QUIZ 4 ECE35 Win09
NAME _ SID _
For the familiar yet fiendishly complex ideal opamp circuit at right, (1) What is the maximum output voltage Vout, max = _ (2) What is the voltage gain? GV = _
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NOTE: THE QUIZZES MAY OR MAY NOT S
University of California San Diego Department of Electrical and Computer Engineering
ECE 35 Practice Final Exam Winter 2006
Name (Last, First) _ Student ID number _ I have neither provided nor received any assistance on this exam Signature _ 200 points to
cript to plot transfer functions necessary for Project 5 %matlab commands can be separated by ; or new line %the ; suppresses a listing of the result of the command % %correct component values must be input here r1 = 1e4; r2 = 1e5; c1 = 0.75e-9; c2 = 5e-9
QUIZ 1 ECE35 Win09 For the familiar circuit at right,
NAME _ SID _
(1) What is the resistance of the resistor R? R = _ (2) What is the voltage across the current source? V = _
QUIZ 1 ECE35 Win09
NAME _SOLUTIONS_ SID _
In the familiar circuit at right, what is the power supplied by each of the two current sources? (1) 3A source Psupplied = _ (2) 1.25A source Psupplied = _
As in the HW problem 3.5-1, we need to simplify the circu