The Ultimate DC Electrical Circuits Course

We will learn what are systems of units, also we will learn base and derived quantities and the main systems of scientific units

We will learn in this tutorial the international systems of units, also the most common quantities in electricity and the units of these quantities in SI units.

At the end of this tutorial we will know what is the standard prefixes.

Here we will begin with the first common quantity in electricity which is electric charge.

We will know the types of charges, also we will learn the structure of an atom.

How to differentiate between neutral object, positively charged and negatively charged?

We will discuss the different methods of charging.

What are insulators and conductors?

What is a coulomb unit?

Today we will learn more about the second quantity in the most common quantity which is electric current.

What is the actual direction of current and the conventional direction of current?

Difference between AC current and DC current.

How to measure electric current?

Here i will show you with a pen and paper illustration what is an electric charge and what is an atom.

We will have here more in-depth discussion about atoms ,we will learn the structure of atoms (nucleas, energy levels and valence shell).

We will know here how the electric charges causes the creation of electric current.

Actual and conventional direction of electric current.

Different equations of calculating the electric current.

Here we have a constant electric current through time so we will use the elementary equation for calculating electric charges.

Try to solve this example before watching the next tutorial.

Hint: use the same equation that we used in the previous example.

This is just like the first example, we will eleminate here the micro prefix from the equation by multiplying time with (10^-6)

Try to solve this example before watching the next tutorial.

Here we will calculate current using the second equation because electric charges here are not constant through time.

The solution of this example ends at 2:30 ,the rest of the tutorial is a plus.

Today we will learn more about the third quantity in the most common quantity which is electric voltage (potential difference).

We will begin with the physical meaning of the electric potential.

We will know what is voltage.

At the end of tutorial we will see a cool analogy that will help us understand more the concept.

Today we will learn how to determine potential nodes at our circuit.

Also we will know the assumption of direction of voltage and the equation related to it.

Here i illustrate again the analogy with a pen and paper illustration (this analogy is really important).

Today we will learn more about the fourth quantity in the most common quantity which is resistance ,also we will learn the equation of resistance.

What is the difference between resistor and resistance?

What is the difference between conductance and resistance?

Here we will know the different electric symbols for each electric component.

Today we will connect our first electrical circuit, we have aslo a mini-challenge in this exciting tutorial.

Increase your productivity with more in-depth learning proteus software.

Here we will create our first electrical circuit using proteus, aslo we have a mini-challenge at the end of this tutorial.

This our first practical lab tutorial, here we will create our first electrical circuit.

Today we will learn components of electrical circuits (Sources ,Loads and switches).

We will learn what is the SPST, SPDT and DPDT switches.

Here we will use SPDT switch to control 2 electrical DC motors in proteus.

aslo we will use DPDT switch to control 2 electrical circuits, each circuit has 2 electrical DC motors.

Today we will use SPDT switch to control the illumination of 2 lamps practically.

Here we will learn how to differentiate between active elements (electric supplies) and passive elements (electric loads).

In pen and paper illustration, i will show different types of DC electric sources (Independent and dependent).

In this fun tutorial we will learn what is series and parallel electrical circuits ,also we will learn how to simplify electrical circuits using this technique.

At the end of this tutorial we will solve an example.

Ohm's law consider as the most important and basic equation in electrical engineering.

We will know this equation and the magic triangle that makes it more simple.

note: we didn't illustrate power till now, but in the material deal with power equation as it is (Power = Voltage * current) ,untill we hit the concept of power in the upcoming tutorials

To measure electric quantities we need a measuring device.

In this tutorial we will know what is multimeter or (AVO-meter).

Also we will know how to measure electric current using this multimeter (ammeter).

In this practical tutorial, i will show you what does an ordinary Multimeter look like.

also there is another new type of Multimeter which is (clamp meter).

Today we will learn how to use multimeter to measure voltage (voltmeter).

In this tutorial we will use multimeter to measure voltage (voltmeter) practically.

To measure resistance we need to use our Multimeter in (ohmmeter) mode.

In this tutorial we will learn how to measure a resistance of any object using multimeter.

Also we will learn how to use color code method to know the resistance value of a resistor.

In this lab tutorial i have a 4-band resistor and i will use color code method to calculate the resistance of it.

also i will use ohmmeter to measure it practically.

In this lab tutorial i have a 5-band resistor and i will use color code method to calculate the resistance of it.

also i will use ohmmeter to measure it practically.

Here we will know other measuring devices (e.g. clamp-meter ,earth-ground meter ,megger).

Here we will use ordinary ammeter to measure electric current of a simple circuit.

Here we will use clamp meter to measure current for the same electrical circuit of the previous tutorial.

Today we will apply ohm's law using proteus software, also we will know how to using ammeter and voltmeter at proteus.

We will discuss an experiment about Ohm's law using proteus demonstration.

In this experiment we will discuss series and parallel connections.

Today we will learn more about the fifth and sixth quantities in the most common quantity which are power and energy.

Here we will know the equation of electric energy ,also we will know how to calculate our house's electric bill

Today i will show the concept of power, rated power and energy in an easy explanation and fun analogy.

This example is a large example but very important one, here we will calculate current at different time periods also we will draw the value of current at each time interval.

after that we will calculate power and draw values of power at each time interval.

This practical tutorial will show us what will happen if a resistor conume power more than its rated power.

In pen and paper, we will learn steps of calculating a house's monthly electrical bill.

In this example we will calculate the monthly electrical bill using the steps we know from previous tutorials.

This is another type of examples to calculate our monthly electrical bill.

Today we will hit the concept of node also we will learn how to use KCL to calculate electric current values.

KVL is the second law in kirchoff's current laws, here we will learn the meaning of a loop and mesh.

Also we will learn how to calculate voltage values.

Learn what is the current and voltage divider rules.

This is our last tutorial in the first section ,we can't solve complex circuits using simple techniques of simplyfing electrical circuits, we need here advanced techiques for simplyfing and analysis complex electric circuits, that we are gonna learn in the next section of our course.

We will learn here how to solve a little bit complex circuits using star-delta transformation method (this method is only valid if the circuit contain a star or delta configuration).

Solving an example on a resistive circuit using star-delta transformation method

Solving an example on a resistive circuit using star-delta transformation method

This is our first advanced method of solving complex circuits.

We will learn here a new concept called supernode which is a special case in nodal method.

We will learn here a new concept called supermesh which is a special case in mesh method.

This is a great tutorial about using proteus demonstration software to get the final result of any unsolved examples.

Till now we didn't learn how to draw dependent sources in proteus.

We will solve here examples contaiting dependent sources using proteus demonstration software.

We will learn here a new method of the advanced techniques to solve specific types of the complex circuits.

Here we will learn to simplify circuits using source transformation method.

If we have more than one independent source on the same circuit we could use superposition theorem to solve our complex circuit.

Here we will discuss an experiment about superposition theorem.

We will learn here how to solve complex circuits using thevenin's theorem.

Here we will apply thevenin's theorem using practical experiment.

We will learn here how to solve complex circuits using norton's theorem.

Today we will learn how to get the maximum power transfer through a resistor by equalising the value of the resistance with thevenin resistance.

A mathematical proof for maximum power transfer.

Here we will solve an example to the maximum power for a resistor.