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Hello and welcome.

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Today we will look at circuit diagrams basics electronic roadmaps.

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Basically each diagram will contain one of these components resistors ground or inductor diode transistor

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integrated circuit and other miscellaneous component.

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So you have probably the right to build a circuit using one or more than these elements or your search

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google for a schematic and you'll see a lot of components including these and you try to build a circuit

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yourself.

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Today I will help you with that and we together will build a very small but useful circuit.

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There are many many diagrams symbols used to symbolize the various electronic components and there are

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minor variations in the individual symbol to represent variations with a component class.

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We will discuss and introduce a basic working knowledge of circuit diagrams circuit diagrams are road

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maps that show the best ways that current can take from the current voltage source.

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Throw that in the individual components of the circuit to accomplish some task and return to the current

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voltage source to complete the circuit.

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The diagram symbols that will be covered.

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Are just mentioned here and you might want to buy these components so that you can understand them in

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a better manner.

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Let's see.

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Let's look at this circuit.

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This is a remote decoder circuit as you can see here.

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This is the integrated circuit of the ICI.

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This is a right module board supply which give us a eye involved.

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This is the ground.

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This is transistor.

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This is a resistor.

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As you can see it has a lot of components.

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This is a switch uh.

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This is a regular at all.

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This is a diode and this is our battery.

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That switch is jewels to turn on and off that circuit.

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This is a simple example of a circuit diagram.

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In this case the circuit calls the signal sent by a TV remote control and turns on and off electrical

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relays switches in response to the case based on the TV remote this the alarm is a really simple one

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and these are the four as you can see here.

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These are the four switches that we can use this one this one this one and this one.

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So depending on what we place on the remote control one of these relays will be turned on or off.

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Now we will examine uh the simple circuit components.

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This symbol on the left is for fixed value of resistance.

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This one the symbol on the right choice a potential meter or opponent on that can be moved across the

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resistance to vary the resistance.

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We must point out that uh using values of resistance is very common and volume controls on audio equipments

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dimmer light for rooms and a lot of other examples.

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Generally a symbol with a ball into the arrow associated with it represent variable all changeable component

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and not just this or any other component with an arrow or a pointer.

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What a pleasant changeable value.

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Now if we looked here rounding throughout first appearance is a symbol topic this is foreground.

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This is that symbol that we used or those on the ground.

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It really does have some uh differences as represented by these two symbols foreground.

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A ground is a common return back to the current in a circuit to the voltage current source by convention

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that ground connection is hooked to the negative ball of the ball source.

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So in reality the ground is the organized thing source of electrons.

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This seems to be backwards but this is the standard convention in the early days of automobiles the

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positive side of the battery and other voltage current sources were connected to ground.

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This is not true today.

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The term grounding probably comes from the safety in related to connecting an electric device to emit

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a rod driven into the air to provide a safety bath for straight current to flow into the air and not

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through the operators.

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Buddy for instance many high structure have lightning rods that are hooked to grounding rods driven

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into the air so that in the event of a lightning strike that dangerous voltage and current from the

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lightning strike flow harmlessly into the EV and not throw humans in the blaze.

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There are two basic time for guns.

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As a result by the two symbols.

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The symbol on the left that looks like a shovel the presence at ground connection to an air of the ground.

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Represents a ground.

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Uh as you can see here it represents a ground connection to the ground.

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Commonly there is only one connection between an electrical device and an air of the ground and that

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connection is primarily for safety.

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This could be argued that the earth's climate is also important for proper after performance but the

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discussion can be done in more advanced courses.

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The symbol on the right that looks like a rock or [REMOVED] form as you can see here the results a chase

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is ground a chase is the ground is that metal box or foundation that the electronic device is contained

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in the symbol actually represents multiple connection between components and the chases that chases

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the ground is used to provide the common path for current to flow back to the ball source to complete

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the circuit.

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I know that this is too much to understand but you need to get a clue of grounding and what it really

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means.

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Now let's look at these two capacitors.

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This is the symbol that is used for capacitor fixed and variable capacitor.

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The function and operation of capacitor will be covered in some details a little later but um you can

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describe the internal component the capacitor based on the symbol.

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It consists mainly of two blades or two metal blades separated by a space.

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As you can see here one middle bless and the other one.

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Then there is a space between them that is basically what combat stories two conductors separated by

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and an inductive space to give just a brief description of the cover story.

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We must mention that a source can be thought of tiny and very temporary storage batteries combust to

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store electrical energy in electrostatic field between the blades.

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Anyone who has comms their hair or have taken clothing out of the dryer knows what a static electricity

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is.

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You can make a connection.

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Um do that yourself now if you looked at here we can see that inductor symbol.

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Um.

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We must point out that the if there was an arrow then Doctorow would be variable as we mentioned earlier

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based on the symbol.

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Uh let's try to describe the inner structure of that inductor.

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We can see that consist mainly of a coal of fire what I call fired or something inside the quarry.

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As a brief introduction to conductors uh you need to understand that inductor store electrical energy

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in a magnetic field that is formed around the coil here

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when current passes throw it.

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So if we buses current through here uh it will store energy in a magnetic field around that must.

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Most of you are familiar with the Earth's magnetic field one theory is that the Earth's magnetic fields

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formed because electrons are moving within the molten metal that makes up the F called the same that

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happens at a very tiny scale in doctors in our circuit.

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When you uh allow current to bust through the wire it will generate a magnetic field around it.

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That will um theoretically store energy these through these three symbols are for diodes.

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The number of diodes for various purposes and as you can see the original diode there's enough diode

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and the light emitting diode the one that turn on and off a light once activated and these three diodes

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are used widely.

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Now if you looked here at the transistor as you can see this is an unbeatable transistor a b and b transistor

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and a fifth transistor.

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There is a trick to help you and identify the type of bipolar understood which is looking to the direction

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of the arrow.

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As you can see here if the arrows pointing out it is not pointing and that is and B and transistor and

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if the arrows pointing in it is pointing and proudly that is B and B transistor on the 5th the direction

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of the arrow identifies the material of the junction in the illustration.

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The arrow is not pointing in its pointing out therefore this represents and b junction fit now let's

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look at integrated circuit as you can see this is its symbol.

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This is how it looks in real life.

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By their very nature charity with circuits are a collection of components that performance basic function

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is not necessarily to know what goes on inside.

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I see just how I see interface to various of the circuit.

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Therefore the symbol provides only information on which Bean of the policy is connected to the surrounding

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components.

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Sometimes there is a descriptive label on Ben.

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For instance G and the foreground and VTC for the ball.

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Source.

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Now let's look at the final element as you can see these arms renounce elements.

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This is a battery speaker.

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Will meet off.

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This is a fuse and this is antenna.

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This is meta.

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That's it for circuit diagrams and basic electronic components symbols.

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Thanks for watching.

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This is educational engineering team.