Duration of the online course: 6 hours and 4 minutes
4.79
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Build real electronics skills fast with this free course: understand AC/DC, circuits, LEDs, diodes, and tools like multimeters and oscilloscopes.
In this free course, learn about
What electricity is: charge, static electricity, and conductors vs insulators
AC vs DC differences, power/phase basics, and why three-phase is beneficial
Definitions of voltage/current sources; difference between voltage and current in circuits
Ohm’s Law plus series/parallel resistor equivalence and practical circuit solving
How resistors work, including power dissipation and ideal components that dissipate none
Potentiometers vs rheostats; using voltage dividers to set or measure voltages
Using a multimeter (V/I/R) and an oscilloscope, including trigger level adjustment
LED fundamentals: how they emit light, forward voltage, efficiency, and why a resistor is needed
RGB LEDs (what RGB means), common anode/cathode wiring, and LED dimming methods
Semiconductor basics: intrinsic/extrinsic, P-type/N-type; silicon as common material
Diodes and rectifiers: half-wave vs full-wave, center-tap, and advantages of full-wave
Diode circuit analysis, including finding the Q-point via load-line method
Transformer wiring series/parallel and understanding no-load transformer output
Kirchhoff’s Laws: KCL and KVL for analyzing and solving complex circuits
About the free online course
Strengthen your electrician toolkit by learning how electronics really works, from the first principles of electricity to the practical habits used to analyze circuits confidently. This free online course is designed for beginners who want clear, visual explanations and a solid foundation that transfers directly to troubleshooting, installation decisions, and safe day-to-day work around electrical and electronic systems.
You will connect the dots between voltage, current, resistance, power, and energy so diagrams stop feeling abstract and start becoming predictable. You will learn how AC and DC behave differently, why phase matters, and how single-phase and three-phase power affect real equipment. With these concepts in place, you will be able to reason about common circuit behavior instead of relying on memorized rules.
Along the way, you will build practical understanding of essential components such as resistors, potentiometers, LEDs, diodes, semiconductors, and transformers. You will also gain the intuition to choose values and configurations appropriately, recognize how components dissipate power, and anticipate what changes when parts are placed in series versus parallel. These skills are especially useful when diagnosing issues like dim lighting, incorrect voltage levels, unexpected heat, or component failure.
Measurement and verification are central to professional work, so the course also helps you become comfortable with everyday tools. You will learn what to check with a multimeter and how an oscilloscope can reveal timing, ripple, and signal stability when a simple voltage reading is not enough. You will also practice applying core laws used across electronics, including Ohm’s Law and Kirchhoff’s circuit laws, to methodically solve problems and validate your conclusions.
To bridge learning with modern workflows, you will be introduced to circuit simulation for quick testing and better intuition before touching hardware. By the end, you will be better equipped to understand datasheet values, communicate clearly with other technicians, and approach electronics tasks with a structured, safety-minded mindset that supports career growth in electrical maintenance, automation, and service work.
Course content
Video class: The Difference between AC and DC Electricity | Basic Electronics03m
Exercise: _What is the main advantage of DC over AC for long distance transmission?
Video class: A Simple Explanation of Power and Phase - With Animation | Basic Electronics03m
Exercise: What is a key benefit of three-phase power over single-phase power?
Video class: What is Electricity? | Basic Electronics03m
Exercise: _What is the difference between conductors and insulators?
Video class: How Benjamin Franklin discovered STATIC ELECTRICITY! | Basic Electronics02m
Exercise: What did Benjamin Franklin's experiments with rods demonstrate about charges?
Video class: Current and Voltage Sources (With Definition) | Basic Electronics03m
Exercise: _What is a voltage source?
Video class: Voltage, Current, and Power Explained - Laying the Foundation for Basic Circuits | Basic Electronics07m
Exercise: _What is the difference between current and voltage in a circuit?
Video class: Potentiometer Basics - How they Work | Basic Electronics06m
Exercise: What is the main functional difference between a rheostat and a potentiometer?
Video class: Calculate series and parallel resistor equivalence | Basic Electronics05m
Exercise: _What is the difference between resistors in series and resistors in parallel?
Video class: How to select resistor values for LEDs | Basic Electronics06m
Exercise: How to determine the resistor needed for an LED circuit?
Video class: How do resistors work? (Animated) | Basic Electronics07m
Exercise: What is the most common type of electronic component according to the discussion?
Video class: How voltage dividers work - Voltage Division | Basic Electronics08m
Exercise: _What is a voltage divider and how does it work?
Video class: Getting Started with a Multimeter | Basic Electronics08m
Exercise: _What are the three basic features that a multimeter can be used for in electronics?
Video class: Oscilloscopes 101 - How to use an o-scope! | Basic Electronics09m
Exercise: What is the importance of manually adjusting the oscilloscope's trigger level?
Video class: Ohm’s Law Tutorial with easy practice problems | Basic Electronics15m
Video class: History of LED Lights (light emitting diodes) | Basic Electronics05m
Exercise: _Who is credited with being the first person to intentionally create what we would consider an LED?
Video class: LEDs and Forward Voltage | Basic Electronics11m
Exercise: What differentiates LEDs from incandescent and other traditional light bulbs?
Video class: How an RGB LED works and how to use one! | Basic Electronics07m
Exercise: _What does RGB stand for in an RGB LED?
Video class: Your LED questions ANSWERED! (Part 1) | Basic Electronics13m
Exercise: How do LEDs (Light Emitting Diodes) produce light?
Video class: Why Are LED's Better? (Comparing different types of light bulbs) | Basic Electronics18m
Exercise: _What is the efficiency of incandescent bulbs?
Video class: Power Dissipation in Circuits plus an EXPERIMENT | Basic Electronics13m
Exercise: Which component in its ideal form does not dissipate power?
Video class: Your LED questions ANSWERED! (Part 2) | Basic Electronics08m
Exercise: _Are LEDs better than HIDs for car headlights?
Video class: How to dim an LED - the two MOST COMMON ways | Basic Electronics12m
Exercise: What is one advantage of using LEDs for dimming over incandescent bulbs?
Video class: Your LED questions ANSWERED! (Part 3) | Basic Electronics15m
Exercise: _Why do LEDs need a resistor?
Video class: LED bulb teardown 2019! We take apart a CREE and Philips bulb | Basic Electronics08m
Video class: Single resistor for a common anode or common cathode RGB LED? | Basic Electronics03m
Video class: Classification of Semiconductors (Intrinsic/Extrinsic, P-Type/N-Type)05m
Exercise: _What is the most commonly used semiconductor material in the electronics industry?
Exercise: _What is the most commonly used semiconductor material in the electronics industry?
Course comments: Basic electronics
CIRRO
thanks my only teacher