Hello and welcome.
Today we will look at circuit diagrams basics electronic roadmaps.
Basically each diagram will contain one of these components resistors ground or inductor diode transistor
integrated circuit and other miscellaneous component.
So you have probably the right to build a circuit using one or more than these elements or your search
google for a schematic and you'll see a lot of components including these and you try to build a circuit
yourself.
Today I will help you with that and we together will build a very small but useful circuit.
There are many many diagrams symbols used to symbolize the various electronic components and there are
minor variations in the individual symbol to represent variations with a component class.
We will discuss and introduce a basic working knowledge of circuit diagrams circuit diagrams are road
maps that show the best ways that current can take from the current voltage source.
Throw that in the individual components of the circuit to accomplish some task and return to the current
voltage source to complete the circuit.
The diagram symbols that will be covered.
Are just mentioned here and you might want to buy these components so that you can understand them in
a better manner.
Let's see.
Let's look at this circuit.
This is a remote decoder circuit as you can see here.
This is the integrated circuit of the ICI.
This is a right module board supply which give us a eye involved.
This is the ground.
This is transistor.
This is a resistor.
As you can see it has a lot of components.
This is a switch uh.
This is a regular at all.
This is a diode and this is our battery.
That switch is jewels to turn on and off that circuit.
This is a simple example of a circuit diagram.
In this case the circuit calls the signal sent by a TV remote control and turns on and off electrical
relays switches in response to the case based on the TV remote this the alarm is a really simple one
and these are the four as you can see here.
These are the four switches that we can use this one this one this one and this one.
So depending on what we place on the remote control one of these relays will be turned on or off.
Now we will examine uh the simple circuit components.
This symbol on the left is for fixed value of resistance.
This one the symbol on the right choice a potential meter or opponent on that can be moved across the
resistance to vary the resistance.
We must point out that uh using values of resistance is very common and volume controls on audio equipments
dimmer light for rooms and a lot of other examples.
Generally a symbol with a ball into the arrow associated with it represent variable all changeable component
and not just this or any other component with an arrow or a pointer.
What a pleasant changeable value.
Now if we looked here rounding throughout first appearance is a symbol topic this is foreground.
This is that symbol that we used or those on the ground.
It really does have some uh differences as represented by these two symbols foreground.
A ground is a common return back to the current in a circuit to the voltage current source by convention
that ground connection is hooked to the negative ball of the ball source.
So in reality the ground is the organized thing source of electrons.
This seems to be backwards but this is the standard convention in the early days of automobiles the
positive side of the battery and other voltage current sources were connected to ground.
This is not true today.
The term grounding probably comes from the safety in related to connecting an electric device to emit
a rod driven into the air to provide a safety bath for straight current to flow into the air and not
through the operators.
Buddy for instance many high structure have lightning rods that are hooked to grounding rods driven
into the air so that in the event of a lightning strike that dangerous voltage and current from the
lightning strike flow harmlessly into the EV and not throw humans in the blaze.
There are two basic time for guns.
As a result by the two symbols.
The symbol on the left that looks like a shovel the presence at ground connection to an air of the ground.
Represents a ground.
Uh as you can see here it represents a ground connection to the ground.
Commonly there is only one connection between an electrical device and an air of the ground and that
connection is primarily for safety.
This could be argued that the earth's climate is also important for proper after performance but the
discussion can be done in more advanced courses.
The symbol on the right that looks like a rock or [REMOVED] form as you can see here the results a chase
is ground a chase is the ground is that metal box or foundation that the electronic device is contained
in the symbol actually represents multiple connection between components and the chases that chases
the ground is used to provide the common path for current to flow back to the ball source to complete
the circuit.
I know that this is too much to understand but you need to get a clue of grounding and what it really
means.
Now let's look at these two capacitors.
This is the symbol that is used for capacitor fixed and variable capacitor.
The function and operation of capacitor will be covered in some details a little later but um you can
describe the internal component the capacitor based on the symbol.
It consists mainly of two blades or two metal blades separated by a space.
As you can see here one middle bless and the other one.
Then there is a space between them that is basically what combat stories two conductors separated by
and an inductive space to give just a brief description of the cover story.
We must mention that a source can be thought of tiny and very temporary storage batteries combust to
store electrical energy in electrostatic field between the blades.
Anyone who has comms their hair or have taken clothing out of the dryer knows what a static electricity
is.
You can make a connection.
Um do that yourself now if you looked at here we can see that inductor symbol.
Um.
We must point out that the if there was an arrow then Doctorow would be variable as we mentioned earlier
based on the symbol.
Uh let's try to describe the inner structure of that inductor.
We can see that consist mainly of a coal of fire what I call fired or something inside the quarry.
As a brief introduction to conductors uh you need to understand that inductor store electrical energy
in a magnetic field that is formed around the coil here
when current passes throw it.
So if we buses current through here uh it will store energy in a magnetic field around that must.
Most of you are familiar with the Earth's magnetic field one theory is that the Earth's magnetic fields
formed because electrons are moving within the molten metal that makes up the F called the same that
happens at a very tiny scale in doctors in our circuit.
When you uh allow current to bust through the wire it will generate a magnetic field around it.
That will um theoretically store energy these through these three symbols are for diodes.
The number of diodes for various purposes and as you can see the original diode there's enough diode
and the light emitting diode the one that turn on and off a light once activated and these three diodes
are used widely.
Now if you looked here at the transistor as you can see this is an unbeatable transistor a b and b transistor
and a fifth transistor.
There is a trick to help you and identify the type of bipolar understood which is looking to the direction
of the arrow.
As you can see here if the arrows pointing out it is not pointing and that is and B and transistor and
if the arrows pointing in it is pointing and proudly that is B and B transistor on the 5th the direction
of the arrow identifies the material of the junction in the illustration.
The arrow is not pointing in its pointing out therefore this represents and b junction fit now let's
look at integrated circuit as you can see this is its symbol.
This is how it looks in real life.
By their very nature charity with circuits are a collection of components that performance basic function
is not necessarily to know what goes on inside.
I see just how I see interface to various of the circuit.
Therefore the symbol provides only information on which Bean of the policy is connected to the surrounding
components.
Sometimes there is a descriptive label on Ben.
For instance G and the foreground and VTC for the ball.
Source.
Now let's look at the final element as you can see these arms renounce elements.
This is a battery speaker.
Will meet off.
This is a fuse and this is antenna.
This is meta.
That's it for circuit diagrams and basic electronic components symbols.
Thanks for watching.
This is educational engineering team.