This course introduces fundamental principles and concepts in electrical and electronics engineering technology including Safety , Direct Current (DC), Alternating Current (AC), Digital, and Solid state electronic circuits.
This course provides lecture notes, videos lectures and quizzes to test your understanding of the concepts presented.
It takes about 2-3 hours to go through all 10 course lectures or approximately 15 minutes per lecture.
The course presents a sequence of topics from simple concepts to intermediate ideas.
If you always wanted to understand the fundamentals of applied engineering electronics, this course is for you.
Electronics engineering technology
fundamentals Intro and Overview
Hello and welcome, I am Oscar Rodriguez; college professor and international applied engineering consultant with more than 15 years of combined academic and industrial experience teaching and consulting in the areas of electronics, robotics, automation, mechatronics, and applied engineering education.
I have various degrees in applied engineering including an associate degree in electronics and robotics, bachelors in electronics instrumentation, masters in computers and automation, postmasters in instructional technology and doctor of science in educational technology and engineering education.
Additionally i hold technical certifications in electronics manufacturing, green production, advanced manufacturing, robotics, fiber optics, renewable energy systems and online instruction.
I would like to give you a short overview about a brand new course entitles “electronics engineering technology fundamentals” that is being offered via the udemy online platform.
I love teaching as a way to share my knowledge and encourage other individuals to improve their skills, knowledge and educational credentials in order to have better opportunities for improvement of standard of living or simply realize they are capable of continuing to learn in order to stay current in their area of expertise.
Today i am happy to announce a brand new electronics engineering technology fundamentals course. This course will discuss the topics of safety when working with electrical and electronic circuits; it will explore direct current circuit and devices, alternating current circuits and devices, digitals fundamentals and analog and semiconductor circuits and devices. Those are the main topics being discussed.
The course is intended for engineering technology majors of any discipline, whether students or professionals as well as hobbyist desiring to learn about electrical and electronic circuits.
Understanding algebra and trigonometry are necessary in order to understand each of the topics that will be discussed in this course.
The level of the course is between basic and intermediate.
So if you are a student or professional in the mechanical, civil, industrial, electrical or similar disciplines this course can enhance your knowledge, especially today when most systems have incorporated electrical and electronic components and devices.
So welcome once again to the EEFT…I am your instructor Dr. Oscar Rodriguez
What EETF is
Objective: Identify and apply general safety guidelines.
•This safety recommendations shall, at minimum be followed when working with electronic circuits and components:
1-Always double check wiring before applying power to the circuit or components.
2-Use appropriate personal protective equipment (PPE), this may include: Safety glasses, gloves, earplugs, masks, helmet, or similar protective equipment.
3-Protect component and devices when handling them by using appropriate antistatic procedures and equipment, this may include: antistatic wrist traps, and antistatic benches.
4-If high voltage is involved in the circuit and measurements are needed, use the one-hand rule to measure electrical voltage or current.
5-Consider the safety of the shop, lab or any other context where the circuit is operated.
Relevant OSHA Safety Standards
Objective: Identify and follow OSHA rules when working with electrical and electronic equipment.
Introduction: The Occupational Safety and Health Administration (OSHA) is the branch of the U.S. government in charge of enforcing workers safety. There is lot to say about OSHA but the idea here is to provide an overview of some of the typical rules that apply to electrical works and specifically when working in educational and training laboratory facilities:
1- Do not horse play.
2- Always get approval of the lab assistant, instructor or supervisor.
3-Any injury has to be reported immediately.
4-Always Follow Lock-out/Tag-out procedures.
5-Always use tools and equipment correctly.
6- Do not distract other students or workers in the lab or workplace.
7-Remove all personal items such as watches and rings and similar before working.
8-Use appropriate lifting techniques when lifting
9-Never use gloves when working with rotating equipment
10- Follow any safety precautions not listed here.
This quiz covers Lecture 3 OSHA Safety Standards.
Electronic Troubleshooting Techniques
Objective: Identify and follow proper procedures when troubleshooting electronic circuits.
Introduction: Examining problems and following a procedure to solve that problem is what we call troubleshooting. It involves first, discovering the cause, second correcting the cause, third correcting the problem. If Only the problem is corrected, but the cause is not discovered and fixed, the problem may occur again. When dealing with electronic circuits and devices the following is recommended:
1-Verify the power connections.
2-Give detailed visual inspections.
3-Monitor the operating electrical parameters.
4-Determine if the circuit has ever worked or if is the first time in operation.
5-Refer to other sources such as manuals, a working circuit or device, and maybe to other technical persons that have worked with the circuits.
Introduction: Electrical energy can be harvested from various sources. Some of the common sources of electrical power are:
1-Chemical sources such as the batteries.Batteries rely on chemical reaction to produce voltage. 2-Natural sources such as wind and water, solar, and heat. Wind, Water, Solar and Thermal are other forms of Electrical Power Generation.
3-In the case of the natural sources they need to be converted via a generator in the case of the wind and water.Rectification is the process of: *Converting AC to DC, -Converting DC to AC, -Maintaining a constant voltage output.
4- A solar photovoltaic (PV) in the case of the sun radiation.A solar PV converts solar energy by: -Electromagnetic induction, -Regulation, -Photovoltaic action.5- A thermal converting devices in the case of heat. Example a boiler heating water to produce steam.
This quiz covers sources of electrical power.
•Introduction: The basic electrical circuit is made of 3 elements. Complex circuits are made of these three elements.
•2- Electrical conductors.
•3-Electrical load or resistance.
•In all circuits the Ampere-Hour Rating is an important consideration. Kilowatt-Hour is the measure of energy consumption.
Battery Ratings Examples:
A battery rated at 200 mAh can supply current at 5 mA for: -*-40 hours.
200 mAh divided by 5mA = 40 hours
200 mAh divided by 10 mA = 20 hours
200 mAh divided by 20 mA = 10 hours
A battery rated at 50 Ah must last for 5 days. What current can be drawn from it? *-10 Ah per day or .417 Ah.
50 Ah divided by 5 days = 10 Ah per day- OR- 50Ah divided 120 hour = 0.417 Ah
50 Ah divided by 10 days = 5Ah per day –OR-50Ah divided by 240 hour = 0.208 Ah
•Introduction: In the study of Alternating Current it is important to Identify the forms of AC signal generation.
•The two basic sources of AC power are electromagnetic sine waves created by:
•1-Electromagnetic AC generators
•2- Electronic equipment such as frequency generators and oscillators.
•Three important elements studied under AC power signals:
Frequency definition: How many times in a given period the frequency oscillates. F (Hertz) = 1/t(Seconds)
Consider the following F calculations:
a)What is the frequency of a signal that oscillates every
F= 1/t , F = 1/0.100 seconds = 10 Hertz (10 Hz)
b) What happens if the time of oscillation is reduce to 50
F=1/t, F = 1/0.010 seconds = 100 Hz…the frequency increases or doubles
c) What happens if the time is double from the original?
F= 1/t, F=1/0.200 seconds = 5 Hz…the frequency reduces.
Frequency and Time are inversely proportional.
Period definition: The time required for the completion of one cycle. Also the reciprocal of the frequency:
T (seconds) = 1/f(Hertz)
Consider the following Period calculations:
a)What is the Time or period of a signal that
with a frequency of 60 Hz per second?
T = 1/f = 1/60 Hz = 0.017 seconds or 17.7 milliseconds
b) What happens if the frequency of oscillation is reduced to 30 Hz?
T = 1/f = 1/30 Hz = 0.033 seconds or 33.3 milliseconds…the time increases or doubles.
c) What happens if the frequency is doubled from the original?
T = 1/120 Hz = 0.008 seconds or 8 milliseconds….time reduces.Time and Frequency are inversely proportional.
Amplitude definition: How much voltage the signal carries and it is given in RMS (Root Mean Square), either in Peak-to-Peak or just Positive Peak or Negative Peak.
Vrms = Vpx0.707
Vp = 1.414Vrms
Vpp = 2.828Vrms
Consider the following Amplitude calculations:
a)If the Vp = 2 volts, what is the Vrms value?
Vrms = Vpx0.707 = 1.414rms
b) If the Vrms = 1.414, what is the Vp value?
Vp = 1.414 x 1.414 = 2.828Vp
c) What is the Vpp value if Vrms is 1 volt?
Vpp = 2.828x1Vrms = 2.828Vrms is the voltage value required by a AC source to do the same work of an DC source can do.
-One revolution of the loop generates one cycle of the wave voltage. True
-A four-pole generator has 2 south poles and 2 north poles. True
-An electronic circuit that produces repetitive waves is called: *-Oscillator
-AC generators are called: *-Alternators
-Frequency in a generator is directly proportional to: *-Rate of rotation
F = pole pair times number of revolutions per minutes.
This quiz covers power sources in AC
Properties of AC Signals
1-Harmonic and AC signals:
Harmonics are signals that result from combining two or more AC signals.
2-Polarity of sine wave: Sine waves have Amplitude as discussed previously, but they also have Positive and Negative polarity, Also called Positive Peak and Negative Peak respectively. Polarity changes at the zero value of the sine. Both voltage and current have positive and negative polarity.
3-Period of a sine wave: Period or Time of an AC signal is defined as the Time needed for a single or complete wave cycle. The symbol for time is T.
4-Frequency of a sine wave: Frequency of an AC signals is the number of times the sine wave is repeated within a given period of time or 1 second.5-Relationship of Frequency and period: Time and Frequency are inversely related, as the frequency increases, the time decreases and vice versa.
If the Period (time) for this sine wave is 2 seconds. What is the frequency of the signal?
F = 1/t = 1/2 S = 0.5 Hertz
If the frequency is 2 Hz, what is the Period?
T = 1/f = 1/ 2Hz = .5 seconds = 500 mS
2-CMOS=Complementary Metal-Oxide Semiconductors
3-ECL= Emitter Coupled Logic
5-Power dissipation in IC's
6-Speed power product
Which logic family typically uses less power? *CMOS, TTL, ECL.
Which family has the fastest switching speed? CMOS, TTL, * ECL
Two logic gates with propagation delay of 5nS and 10nS respectively. Which gate may operate at higher frequency? *The 5 nS gate, The 10 nS gate
This quiz covers IC' and logic families.
Principles and Properties of Semiconductors
Objective: Study and understand the atomic structure of semiconductors.
Some of the properties of the semiconductors in electronics include:
1-Silicone and Germanium atoms
3-Conduction in semiconductors
4-Electron and hole current
5-Semiconductors, conductors and insulators
6-n-Type and p-Type semiconductors
1-In an intrinsic or pure semiconductor, there are relatively few free electrons.
2- To increase the number of holes in intrinsic silicone, trivalent impurity atoms are added.</p>
This quiz covers semiconductor properties.
What can you do after this...
A New Free Electronics Fabrication Course
Oscar “Dr.O” Rodriguez's academic credentials include a combination of international teaching and consulting in engineering and technology. He holds undergraduate degrees in engineering technology (electronics, robotics and instrumentation), a Master's of science in electronics & computers, a Specialist and doctoral degree in instructional systems and technology management. Additionally Dr. Rodriguez holds various technical professional certifications in electronics manufacturing, advanced manufacturing technologies, fiber optics, renewable energy, and robotics.
Dr. Rodriguez's background and interest includes: Mechatronics Engineering--Electronics Automation Systems and Robotics--Distance, Online and Computer Aided Engineering Education--International Technology Transfer and Workforce Development--K-16 Engineering and Technology Education.
He has taught engineering and technology for almost 15 years both at corporate sites and college campuses on both cases using a variety of instructional methods including online and distance as well as computer assisted techniques. Additionally he has developed and implemented numerous STEM projects in the U.S. and Latin America.
Dr. Rodriguez loves teaching and learning, it is a great way to share with others and keep himself committed to lifelong learning.
He looks forward to serving and sharing with many lifelong learners!
Biografía del Instructor
Las credenciales académicas de Oscar “Dr.O” Rodriguez incluyen una combinación de experiencia docente y de consultoría internacional en ingeniería y tecnología. Él tiene títulos de pregrado y postgrado en electrónica, robótica, computación e instrumentación, especialista y doctorado en tecnologías educativas. Además el Dr. Rodriguez posee varias certificaciones técnicas en manufactura electrónica, tecnologías de la manufactura moderna, fibras ópticas, energía renovable y robótica.
El Dr. Rodriguez realiza investigación en ingeniería mecatrónica, automatización y robótica, educación a distancia y en línea, transferencia tecnológica, desarrollo de la fuerza de trabajo y educación en las ingenierías y tecnologías.
Con más de 15 años de experiencia combinada en la docencia y la industria, en distintas organizaciones corporativas, también habiendo utilizado diversidad de métodos modernos de instrucción, y habiendo implementado numerosos proyectos en Norte America y América Latina, el Dr. Rodriguez está aquí para ensenar y aprender con aquellos comprometidos con el aprendizaje continuo.
El espera servir y compartir con todos aquellos que están dispuestos aprender continuamente!