# 2018 Electrical Engineering

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2018 Electrical Engineering

1.1.1. B2

1.1.2. LT.Spice

## 2. Circuits I Electronic Fundamentals I

### 2.1. DC (steady state) analysis

2.1.1. Circuit simplification

2.1.1.1. Thévenin

2.1.1.2. Norton

2.1.2. Superposition

### 2.2. Uncategorized

2.2.1. https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-002-circuits-and-electronics-spring-2007/lecture-notes/

2.2.2.1. John Goomey

2.2.2.2. https://youtu.be/ILWXv2UB3PM?list=PL4F8106B5158CB89E

### 2.3. Components

2.3.1. Resistors

2.3.2. Inductors

2.3.3. Capacitors

## 3. Circuits II

### 3.4. Components further

3.4.1. Transformers

### 3.5. Frequency response

3.5.1. bode(G)

3.5.1.1. plot LTI object G

3.5.2. [mag,ph] = bode(G,w)

3.5.2.1. mag & phase, no plot

## 4. Analog Electronics

### 4.1. Op-amps

4.1.1. KVL

4.1.1.1. inverting op-amp

4.1.1.1.1. DRAW...Put virtual ground, and define voltage at that node to be zero

4.1.1.2. non-inverting

4.1.1.2.1. http://electronicspost.com/differentiating-circuit-and-integrating-circuit/

4.1.1.2.2. http://masteringelectronicsdesign.com/how-to-derive-the-non-inverting-amplifier-transfer-function/

4.1.1.3. bonus

4.1.1.3.1. http://masteringelectronicsdesign.com/the-differential-amplifier-transfer-function/

4.1.2. A, B, AB amplifiers

4.1.3. Inductor and Cap amplifiers

4.1.3.1. http://electronicspost.com/differentiating-circuit-and-integrating-circuit/

4.1.3.2.1. http://www.circuitstoday.com/triangular-wave-generator

4.1.4. Filters

4.1.4.1. http://electronics.stackexchange.com/questions/61150/how-to-recognize-the-type-of-analog-filter-given-its-topology

4.1.4.2. https://en.wikipedia.org/wiki/Electronic_filter

4.1.5. CHOOSING WHICH ONE!?

4.1.5.1. Instrumentation

4.1.5.2. Differential

4.1.5.3. WHATTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

4.2.1. BJT

4.2.1.1. NPN

4.2.2. FET

4.2.2.1. MOSFET

### 4.3. Diodes

4.3.1. https://youtu.be/b86s1CzGHB0?list=PLWPirh4EWFpHL7ezpTD0hhk4cEVP3Yi6i

4.4.1. lab

### 4.6. Components further

4.6.1. Capacitors

4.6.1.1. The two main types are intentional and parasitic. I tend to think of capacitors in terms of their function in the circuit:

4.6.1.1.1. coupling (blocking dc)

4.6.1.1.2. filtering (blocking ac)

4.6.1.1.3. frequency compensation (stopping unwanted oscillation)

### 4.7. Other

4.7.1. Parts used: Op-amp ~ 741 Capacitor ~ 3.3μF BJT ~ 2N3904, 2N2222 MOSFET ~ BS170

4.7.1.1. Other

4.7.1.1.1. Zener

4.7.2. Memo

4.7.2.1. https://www.quora.com/How-can-I-memorize-the-standard-resistor-values

4.7.3. Goals

4.7.3.1. Summary video for each lab (produce something)

4.7.3.1.1. Specs

4.7.3.1.2. LT.Spice

4.7.3.1.3. One supplement for each lab

## 5. Signals & Systems

### 5.1. Differential Equations (mm)

5.1.1. Laplace Transforms?

5.1.2. Inverse Laplace?

### 5.2. Online

5.2.1.1. Playlists

5.2.1.1.1. Signals and Systems by Prof. S.C. Dutta Roy sir

5.2.1.1.2. Signals Darryl Morrell

5.2.1.1.3. EE382 Chapter 1: Signals and System Basics

5.2.1.1.4. MIT OCW Fall 2011

5.2.1.2. Individual videos

5.2.2. Assessments

5.2.2.1. two question exam

5.2.3. Resources

5.2.3.1. per topic examples & commentary https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-01-unified-engineering-i-ii-iii-iv-fall-2005-spring-2006/signals-systems/

### 5.3. Concepts

5.3.1. WK1

5.3.1.1. math transformations

5.3.1.1.1. shift first

5.3.1.2. even/odd

5.3.1.2.1. .5[ x(t) ± x(-t) ]

5.3.1.3. fundamental f/pd

5.3.1.3.1. .

5.3.1.4. important functions

5.3.1.4.1. unit step

5.3.1.4.2. unit impulse

5.3.2. WK2

5.3.2.1. properties

5.3.2.1.1. stable?

5.3.2.1.2. memoryless?

5.3.2.1.3. memory vs causality signals and systems

5.3.2.1.4. causal?

5.3.2.1.5. linear?

5.3.2.1.6. invariant?

5.3.2.2. tests for them

## 6. Lab

### 6.1. 1

6.1.1. Amplifier & Integrator (double)

6.1.1.1. https://uwplatt.courses.wisconsin.edu/d2l/le/content/3438284/viewContent/21276964/View

6.1.1.3. High/low pass filters related to differentiator?

### 6.2. 2

6.2.1. Fixed AC to DC power supply

6.2.1.1. https://uwplatt.courses.wisconsin.edu/d2l/le/content/3438284/viewContent/21459876/View

6.2.1.2. ltspice ac to dc power supply

6.2.1.3. Supplement? Perhaps something from the exam worth knowing...

### 6.3. 3

6.3.1. BJT Biasing for 10 V/V gain

6.3.1.1. https://uwplatt.courses.wisconsin.edu/d2l/le/content/3438284/viewContent/21556617/View

6.3.1.2. LT

6.3.1.3. What is the difference between a class A and class B amplifier?

### 6.4. 4

6.4.1. MOSFET amp biased CS for max gain

6.4.1.1. https://uwplatt.courses.wisconsin.edu/d2l/le/content/3438284/viewContent/21741814/View

6.4.1.1.1. What do they mean? https://uwplatt.courses.wisconsin.edu/d2l/le/content/3438284/viewContent/21777288/View

6.4.1.2. LT

6.4.1.3. Supplement?

## 7. Analog Exams

### 7.2. indiabix.com

7.2.2. http://www.indiabix.com/electronics-and-communication-engineering/analog-electronics/ Look at other sections...

## 9. Resources

9.1.1. http://electronics.StackExchange.com/

9.1.1.1. http://www.eeweb.com/electronics-forum

9.1.1.2. https://www.physicsforums.com/forums/engineering-and-computer-science-homework.158/

### 9.2. project search or brainstorming

9.2.1. https://circuits.io/

9.2.1.1. note - no discriptions

9.2.2. http://www.eeweb.com/projects

9.2.3. https://www.circuitlab.com/browse/by-tag/current-mirror/

### 9.3. cool projects

9.3.1. Uni of Illinois at Urbana-Champaign

9.3.1.1. https://courses.engr.illinois.edu/ece445/projects.asp

9.3.1.1.1. \$125

9.3.1.1.2. Magnetic Levitation System

9.3.1.1.3. Physiological Control of a Mouse

9.3.1.1.4. Wireless Data Communications

9.3.1.1.5. Brain Wave Alarm Clock **LABVIEW**

9.3.1.1.6. Wireless Text Messaging

9.3.1.1.8. Intelligent Autonomous Vehicle with Ultrasound Remote Sensing

9.3.1.1.9. Active occupant room detection system

9.3.1.1.10. unauthorized lock stunner

9.3.1.1.11. DIY Polygraph

9.3.1.1.12. Rainfall Powered Battery Charger

9.3.1.1.13. EWB Project 1 (Efficient Low Power DC-DC Converter)

9.3.1.1.14. EWB - Efficient lighting for rural villages

9.3.1.1.15. Automatic Detection of Unwanted Phone Calls Using Bayesian Techniques

9.3.1.2. https://courses.engr.illinois.edu/ece398psc/projects.asp

9.3.1.2.1. https://www.quora.com/What-is-the-best-way-to-bring-internet-to-the-developing-world

## 10. I learned about how... and why...

### 10.2. Voltage regulator

10.2.1. http://www.analog.com/media/en/technical-documentation/tech-articles/Understanding-How-a-Voltage-Regulator-Works.pdf

10.2.2. What is a voltage regulator? - Quora

## 11. Projects

11.1.1. \$9

### 11.2. ComboUnlocker

11.2.1. Parts

11.2.1.1. See wiring diagram tab

11.2.1.1.1. \$13.5

11.2.1.2. .

11.2.1.2.1. \$18

11.2.1.3. .

11.2.1.3.1. \$9.70

11.2.2. .

11.2.2.1. \$1-0.3

11.2.2.1.1. L7805 Voltage Regulator

11.2.3. Extra parts

11.2.3.1. Optical encoder

11.2.4. Recommended (but did not buy)

11.2.4.1. .

11.2.4.2. encoder

11.2.4.2.1. Insightful

11.2.4.2.2. Compare Figure 2 & Figure 3

11.2.4.2.3. Detailed (but short)

11.2.4.2.4. extra (pics)

11.2.4.2.5. Does this incremental rotary encoder unit include a stepper motor?

11.2.4.2.6. Is there a way to use an incremental rotary encoder with a single shaft motor?

11.3.1. Parts

### 11.4. Stepper motor

11.4.1. 2-phase, 5-phase, what's the difference?

11.4.3. In general, which stepper motor is better?

11.4.4. What is a good holding torque for a stepper motor?

11.5.1. .

## 13. Design Project

### 13.1. Electronic Screen R/W anywhere

13.1.1. Research

13.1.1.1. types of electronic screens

13.1.2. Displays

13.1.2.1. Projector

13.1.2.2. ?

14.1.1. Calc III