EET161 D.C. Principles of Electronics

Syllabus is the best way to get hold of me.

Books Lessons In Electric Circuits, Volume I – DC By Tony R. Kuphaldt Fifth Edition, last update October 18, 2006 I verified this Laboratory Manual Robert L. Boylestad, Gabriel Kousourou

Textbook

I verified both links

Lab Equipment ? ? ? ?

DC Power Supply Multisim Digital Multi Meter [DMM] Personal Computer

DC Power GWINSTEK

Fluke Multimeter

Get logged on to a computer in the lab.

Multisim

Units to be measured and calculated VoltageVoltsV or E ResistanceOhmsR or Ω Current AmpsI or A

In electronics there is a need for defined units of measurement to describe a circuit and its properties. There is also a need to represent very large numbers and very small numbers with accuracy and with ease, usually within the same circuit or problem.

Engineering Notation All powers of 10 must be 0 or multiples of 3. The mantissa must be greater than or equal to 1 but less than a (1 – 999) mantissa The number left of the decimal.

ENGINEERING NOTATION

2.2KΩ mA µF V MΩ

Chapter 1 Reading Reading assignment: Read Chapter 1

Lab 1 Math Review Do NOT do: Exponential Functions page 11 Numbers 34, 35, 36, 37 Algebraic Manipulations page 13 Numbers 40, 41

Lab 1 Math Review Do NOT do: Order of Operations page 15 – 20 Numbers 52 through 66

Multimeter VOMVolt Ohm Meter VOMVolt Ohm Miliamp Meter

Ohm’s Law page

Chapter 1 Basic Concepts of Electricity

Chapter 1 page 5 Benjamin Franklin speculation of the wool rubbing something off of the wax, the type of charge that was associated with rubbed wax became known as ”negative” (because it was supposed to have a deficiency) while the type of charge associated with the rubbing wool became known as ”positive” (because it was supposed to have an excess).

Static Electricity

The Atom ProtonsPositive charge NeutronsNeutral charge ElectronsNegative charge Page 6-7

Charge

Volt One coulomb of charge is the total charge associated with x electrons. If a total of 1 joule (W) of energy is used to move the negative charge of 1 coulomb (Q), there is a difference of 1 volt (V) between the two points. V=W/Q we will use “V or E”

Voltage Potential: existing in possibility ; capable of development into actuality. Applied voltage is the starting mechanism.

Chapter 1 page 8 The electrons of different types of atoms have different degrees of freedom to move around. This relative mobility of electrons within a material is known as electric conductivity. Conductors versus Insulators.

Chapter 1 page 8-9 Insulators: glass rubber oil fiberglass quartz (dry) cotton (dry) paper plastic air pure water

Copper is the most commonly used metal in the electrical/electronics industry. It has 29 electrons in orbits around the nucleus, with the 29th electron appearing all by itself in the 4 th shell.

Copper Atom First Shell2 electrons Second Shell8 electrons Third Shell18 electrons Forth Shell 1 electron

Chapter 1 page 9 Uniform motion of electrons is what we call electricity, or electric current.

Current Applied voltage is the starting mechanism. V or E Current is a reaction to the applied voltage. A or I

Current You can have voltage and or resistance without current. You must have voltage to create current and you need a resistance to that current.

Chapter 1 page 10 Concept there must be a complete path for current.

Page A thin, solid line is the conventional symbol for a continuous piece of wire. However, the flow will be interrupted if the conductive path formed by the wire is broken:

Direct Current Voltage Sources DC for Direct Current + and – for Positive and Negative V for Volts (sometimes E) (E or EMF for Electro Motive Force) Textbook page 19

NSCC Electronics Lab

Page 23 This circuit is not a practical one. The reason is that it is dangerous because the magnitude of current may be very large This is a short circuit, and the release of energy can be dramatic. What is missing?

Page 23 It can be said that conductors have low resistance and insulators have very high resistance. This resistance serves to limit the amount of current through the circuit.

The symbol for a resistor. Resistance is measured in Ohms. R or Ω

Page 27 A short circuit is an electric circuit offering little or no resistance to the flow of electrons. An open circuit is one where the continuity has been broken by an interruption in the path for electrons to flow. A closed circuit is one that is complete, with good continuity throughout.

Resistance Ohms Opposition to the flow of charge through an electrical circuit, called resistance, has the units of ohms and uses the Greek letter omega (Ω) as its symbol.

TYPES OF RESISTORS Fixed Resistors FIG Fixed metal-oxide resistors of different wattage ratings.

TYPES OF RESISTORS Fixed Resistors

COLOR CODING AND STANDARD RESISTOR VALUES FIG Color coding for fixed resistors.

Must have visual acuity, including ability to distinguish colors.

COLOR CODING AND STANDARD RESISTOR VALUES

COLOR CODING FOR RESISTORS Textbook page 78