INUL. rut- tbUUK
ELECTRICAL
ENGINEERING
WITHOUT
PRIOR KNOWLEDGE
UNDERSTAND THE BASICS
WITHIN 7 DAYS!
, Electrical engineering
without prior knowledge
Understand the basics
within 7 days
Benjamin Spahic
,Table of contents
1 Preface and introduction ................................................................. 1
2 The fundamentals of mathematics .................................................. 4
2.1 Solving equations ..................................................................... 4
2.2 Exponential functions ............................................................... 5
2.3 Powe laws ................................................................................. 5
2.4 The Euler’s number e................................................................ 6
2.5 Logarithms ................................................................................ 7
2.6 Logarithms table ....................................................................... 8
2.7 The Greek alphabet .................................................................. 8
2.8 Sine, cosine, tangent .............................................................. 10
2.9 Sine and cosine functions ....................................................... 11
2.10 Arc sine, arc cosine, arc tangent ............................................ 12
2.11 The two-dimensional coordinate system ............................. 13
3 Physics basics................................................................................... 16
3.1 Notation, upper case letters, lower case letters..................... 16
3.2 Prefixes for a wide dynamic range ......................................... 17
3.3 The "Systeme international d'unites"..................................... 19
3.4 Derived SI units ....................................................................... 20
3.5 Displaying differences ............................................................. 20
3.6 Conservation of energy and efficiency ................................... 21
3.7 Energy...................................................................................... 23
3.8 Power ...................................................................................... 23
4 From water model to circuit ........................................................... 26
4.1 Atoms, electrons, protons ....................................................... 27
4.2 When does material conduct electricity?................................ 28
5 The electric field ............................................................................. 30
, 5.1 Representation of E-fields....................................................... 30
5.2 The force in the electric field ................................................ 32
5.3 Electric potential and voltage................................................. 34
5.4 Current ................................................................................... 36
5.5 Technical and physical current direction ............................... 37
6 The magnetic field .......................................................................... 38
6.1 Elementary magnets .............................................................. 39
6.2 Displaying magnetic fields...................................................... 41
6.3 Electromagnetism.................................................................. 42
6.4 Induction law .......................................................................... 43
6.5 Magnetic flux and induction .................................................. 44
6.6 The Lenz Rule ........................................................................ 45
6.7 The Lorentz force................................................................... 46
6.8 The three-finger rule.............................................................. 47
6.9 Overview: E-field and B-field................................................. 48
7 Markings and treasure symbols ..................................................... 50
7.1 Mass and earth ....................................................................... 50
7.2 The consumer ....................................................................... 50
7.3 The completed circuit ............................................................ 51
7.4 What happens without consumers?...................................... 52
7.5 Counting arrow systems ........................................................ 52
7.6 Voltage arrows ...................................................................... 52
7.7 Current arrows ...................................................................... 53
7.8 Producer and consumer arrow system .................................. 54
7.9 Kirchhoff's laws ...................................................................... 54
ELECTRICAL
ENGINEERING
WITHOUT
PRIOR KNOWLEDGE
UNDERSTAND THE BASICS
WITHIN 7 DAYS!
, Electrical engineering
without prior knowledge
Understand the basics
within 7 days
Benjamin Spahic
,Table of contents
1 Preface and introduction ................................................................. 1
2 The fundamentals of mathematics .................................................. 4
2.1 Solving equations ..................................................................... 4
2.2 Exponential functions ............................................................... 5
2.3 Powe laws ................................................................................. 5
2.4 The Euler’s number e................................................................ 6
2.5 Logarithms ................................................................................ 7
2.6 Logarithms table ....................................................................... 8
2.7 The Greek alphabet .................................................................. 8
2.8 Sine, cosine, tangent .............................................................. 10
2.9 Sine and cosine functions ....................................................... 11
2.10 Arc sine, arc cosine, arc tangent ............................................ 12
2.11 The two-dimensional coordinate system ............................. 13
3 Physics basics................................................................................... 16
3.1 Notation, upper case letters, lower case letters..................... 16
3.2 Prefixes for a wide dynamic range ......................................... 17
3.3 The "Systeme international d'unites"..................................... 19
3.4 Derived SI units ....................................................................... 20
3.5 Displaying differences ............................................................. 20
3.6 Conservation of energy and efficiency ................................... 21
3.7 Energy...................................................................................... 23
3.8 Power ...................................................................................... 23
4 From water model to circuit ........................................................... 26
4.1 Atoms, electrons, protons ....................................................... 27
4.2 When does material conduct electricity?................................ 28
5 The electric field ............................................................................. 30
, 5.1 Representation of E-fields....................................................... 30
5.2 The force in the electric field ................................................ 32
5.3 Electric potential and voltage................................................. 34
5.4 Current ................................................................................... 36
5.5 Technical and physical current direction ............................... 37
6 The magnetic field .......................................................................... 38
6.1 Elementary magnets .............................................................. 39
6.2 Displaying magnetic fields...................................................... 41
6.3 Electromagnetism.................................................................. 42
6.4 Induction law .......................................................................... 43
6.5 Magnetic flux and induction .................................................. 44
6.6 The Lenz Rule ........................................................................ 45
6.7 The Lorentz force................................................................... 46
6.8 The three-finger rule.............................................................. 47
6.9 Overview: E-field and B-field................................................. 48
7 Markings and treasure symbols ..................................................... 50
7.1 Mass and earth ....................................................................... 50
7.2 The consumer ....................................................................... 50
7.3 The completed circuit ............................................................ 51
7.4 What happens without consumers?...................................... 52
7.5 Counting arrow systems ........................................................ 52
7.6 Voltage arrows ...................................................................... 52
7.7 Current arrows ...................................................................... 53
7.8 Producer and consumer arrow system .................................. 54
7.9 Kirchhoff's laws ...................................................................... 54
