ELECTRICAL and COMPUTER ENGINEERING DEPARTMENT

              ECE 1270 - Introduction to Electrical and Computer Engineering

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GRADES

Course Info Study Guides Homework Communications Assignments Labs Matlab Practice Exams

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Instructor
Dr. Angela Rasmussen
Email: ece1270@comcast.net
Office: MEB 3254

Class Time: EMCB 102, T 9:35am-11:30am and W 9:35am-10:30am

Syllabus and Schedule

Course Procedure | (pdf) (grading, notebooks, reports, etc.)

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Learning Objectives/Study Guides                            

• ECE 1270 Tools List
• Unit 1 | (pdf)
• Unit 2 | (pdf)
• Unit 3 | (pdf)
• Unit 4 | (pdf)
• Conceptual Tools Complete List

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Homework                            

Homework	Modifications	Answers:	Due
Problem Set #1 Solution		1.a. i1=-1.5A, i2=-0.5A, Vo=-20V, b. p_2A=-130W, p_10ohm=40W, p_30ohm=67.5W, p_40ohm=10W, p_50ohm=12.5W. 2. i1=-2A, i2=-1A, Vo=-10V. 3. vx=-500V, i1=30mA, power=-30W.	T: May 22,2007
Problem Set #2 Solution	Take v1 to be across resistor R1 for #3.	1. V1=60V. 2. i1=150microA. 3. V1=(iaR3-va)*(R1/(R1+R2+R3)). 4. V1=-Va*R1/(R1+(1+alpha)R2) 5. vo=vs+isR2	W: May 23, 2007
Problem Set #3 Solution	#4 Hint: remember to replace Vx with an equation containing your mesh current variables.	1. Vo=150/67V, i1=50/67A; 2. Vx=(-6/44)V, Vy=-30V, power=36/85,184W; 3. V1=2V, V2=5V, iL=1mA; 4. i1=(21/8k)A, power=-21mW	W: June 6, 2007
Problem Set #4 Solution	#4 Change the dependent current source into a dependent voltage source of value aix.	4. Rth=R1+R2+alpha; Vth=isR1; 5. power=-27mW;	W: June 6, 2007
Problem Set #5 Solution		1. R2=4k, R3=2k; 2. i(t)=e^(-9tsec); 3. vo(t)=24+36e^(-t/12); 4. vo(t)=27-9e^(-t/(3/8))	W: 6/27/2007
Problem Set #6 Solution		1.a. wL=5.625nJ, b. i(t)=3.75e-3e^(-t/250n); 2.a. Vc(t)=-Vs+Vs(R2/(R1+R2))*[1-e^(-t/(R1||R2+R3)C]; 3.RL=1.8k, power=293.9mW; 4.i=is/(1-alphaR2)	W: 6/27/2007
Problem Set #7 Solution		1. Zab=(3.8+0.6j)ohms; 2. omega=447 rad/sec.; 3. I=4e^(-j39); 4. i_x(t)=1.92cos(4t+14)A	W: 7/18/2007
Problem Set #8 Solution	Note that the magnitude of a complex number is taken without a sign. (e.g. take the absolute value of the vector length). (i.e. It is the vector length not the direction of the vector)	1. a. .352 –j0.936; b. 2e^(-j30); c. 3e^j150 or 3e^-j210; d. 10; e. 2; 2. a. R=30k or L=1.2H (this is a huge value – not real practical); 3. R=30k => Io=3sqrt(2)mA; L=1.2H => Io=12sqrt(2)mA. 4. Vth=5e^j0 V, Z_Th=1.25k-j3k	W: 7/18/2007
Problem Set #9 Solution		1. a. vo=-Vs1(R2/R1)+Vs2(1+R2/R1); 2. a.R2=300kohm, b.Vo=vsum – Vdelta(1+2R2/R1), c.Rin=R3; 3. a.C=0.1microF; 5.a. Vth=12, Rth=2.4k, b. RL=2.4k, c. Pmax=15mW; 6. a. I1=1/2(1+j)milliamp, b. i(t)=sqrt(2)/2cos(20kt+45)milliamp	W: 8/1/2007

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Communications Assignments                            

· CLEAR Center:

• CLEAR Center Mission Information (pdf)

• Clear Center Instructors

· Writing Assignments:

• Writing the Lab 1 Introduction (pdf)

• Introduction Peer Review Sheet (pdf)

· Writing Center Help:

• Location: 1st floor of Marriott Library.

• Phone # to make reservations: 587-9122

· Oral Presentation:

• Lab Presentations Handout (pdf)

• Questions to Ask (pdf) when preparing for oral presentation

• Oral presentation order (handed out in class only)

• Oral presentation critique forms

• Lab 1 Oral presentations (pdf)

• Lab 2 Oral presentations (pdf)

• Lab 3 Oral presentations (pdf)

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Labs                            

• Rules for lab notebooks
• Instructions for writing lab reports:
• IEEE Pub on Conference Paper Format (Word)   | (pdf)
• CLEAR: IEEE format template (Word)
• CLEAR: Inverted pyramid style (pdf)
• CLEAR: Outlining (pdf)
• CLEAR: Headings (pdf)
• CLEAR: Writing Conclusions (pdf)
• CLEAR: Writing Conclusions (pdf)
• CLEAR: Grammar (pdf)
• CLEAR: Equations (pdf)
• IEEE Tables and Figures (pdf)
• CLEAR: Writing Conclusions (pdf)
• CLEAR: References (Word)   | (pdf)
• Files with drawings of electronic components:
• Word file (use crop to hide extra parts)
• Appleworks file
• A make-believe example of a lab and report:
• Pseudo Lab (pdf)
• Pseudo Lab Report (pdf)
• polyfit_diode.m
• fminsearch_diode.m
• tot_sq_err.m
• Course labs:
• Lab 0 (pdf) (No notebook or parts required)
• Lab 1 (pdf)
• Lab 1 Reports pts (pdf)
• Lab 1 Notebook pts (pdf)
• Lab 2 (pdf)
• Lab 2 Report pts (pdf)
• Lab 2 Notebook pts (pdf)
• Lab 3 (pdf)
• Lab 3 permittivity and conductivity doc (20 MB, pdf)
• Lab 3 permittivity and conductivity web links (see Tables 4.7, 4.8 and Figs. 4.12 and 4.13)
• Lab 3 Report pts (pdf)
• Lab 3 Notebook pts (pdf)

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Matlab and Labview                            

• Matlab Intro
• Saving scope data on a PC
• Reading scope data into Matlab
• Student Matlab XP fix
• MathWorks (Type 'tutorial' in search box)
• (Also see code for Pseudo Lab in Communications Assignments)
• Labview waveform capture
• scope2matlab.exe

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Practice Exams/Solutions                            

• Practice Exam 1 | (pdf)
• solution: prob 1 | (pdf) prob 2 | (pdf) prob 3 | (pdf) prob 4 | (pdf)
• Practice Exam 2 | (pdf)
• solution: prob 1 | (pdf) prob 2 | (pdf) prob 3 | (pdf)
• Practice Exam 3 | (pdf)
• solution: prob 1 & 2 (pdf) prob 3 & 4 (pdf)
• Practice Exam 4 | (pdf)
• solution: prob 1 (pdf) prob 2 (pdf) prob 3 & 4 (pdf)
• Practice Final Exam | (pdf)
• solution: prob 1 & 2 (pdf) prob 3 (pdf) prob 4 (pdf)

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