PRAKARYA KELAS 9 || PRINSIP KELISTRIKAN DAN SISTEM INSTALASI LISTRIK RUMAH TANGGA || Sarjan S.Pd

Bismillahirrahmanirrahim Assalamualaikum warahmatullahi wabarakatuh. Good to see you again, all my children and fellow students, teachers wherever you are. On this occasion, I will present the material of the pre-work lesson of the 9th grade of the Kasal semester.

How are my children? Are you all ready? How are you? Still healthy? Stay excited? Don't forget to stay at home, always wear a mask, wash your hands and avoid crowds. Stay at home. May health always be with us all. Well, this time

This is the first part of the 9th class, namely the material of the prakarya's study. In the engineering aspect, the 9th class is delivered in the rough semester. This time the material is the principle of electricity and the electrical installation system. Before entering the first question, I would like to ask for your help first.

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Preparation of learning this time before starting then please children prepare first some applications first please prepare a notebook and other writing tools then a book Packet for the semester of the curriculum of 2013 pages 49-53 which is essentially later will learn the power supply learn the power unit

and learn the types and sources of electricity please prepare so that later it is not taut in the course of this lesson next general knowledge of electricity well in the first part of electricity at this time in this current era is a primary need yes primary need then

electricity makes life easier, helps human work. Imagine, have you ever experienced a daily dead light? What can you do? We can't do anything, many activities related to electricity sources are in danger because of death. Well, but there are also in this third part, some tribes in the interior of Indonesia

still prohibit the existence of electricity they live in the countryside for example Baduy tribe and Anak Dalam tribe Baduy tribe in West Java, Anak Dalam tribe in Kalimantan they prohibit the existence of electricity so their lives are still very traditional we can imagine what it is like in this era the next is the power supply

the initial point is the case of electricity, namely the electric charge that is in a object. Here, the sequence of electric charges is as follows: Electric charge is basically a basic charge that has every object, making it experience a trend in other objects that are close.

and also every object basically has an electric charge then the electric charge has two positive charges and negative charges positive charge, positive electric charge is an atom that has negative atoms, aka electrons

Negative electric charge is an atom that has an electron surplus. So, there are positive and negative electric charges. But later in the process, there will also be neutral electric charges, where the number of positive electric charges is the same as the number of

with negative electricity content in one chain. Let's see now a part of an atom. Well, like this, electrons have a negative symbol like this, protons have a positive symbol like this. So, if there is a symbol like this, it's called an electron. The symbol like this is called a proton.

later there is also a ball shaped full of black and black, it's called a neutron or neutron, but in this part we show two compounds, positive and negative compounds, we see here

Well, here there is a neutral atom, so the types of atoms will later appear as neutral atoms, negative atoms, and positive atoms. Neutral atoms, if the amount of electrons is the same as the amount of protons, while negative atoms

namely the amount of electrons is more than the amount of protons, while the positive atom is if the amount of electrons in the negative electric charge is less than the amount of the positive electric charge, aka the proton.

Well, the arrangement of atoms in the core is like this, the inner part is definitely placed as a proton, this is a proton, this is a proton, so the symbol here is positive, then surrounded by electrons through the edder line, yes, this is the direction if the electron is to the left, to the left, to the left, if

Protons are centered inside and they cause positive atoms or negative atoms if the electron is thrown across other atoms. Why? Because of formation, combustion, or because of combustion, causing the atom of something to change, become neutral.

becomes negative or positive? This is an explanation about the atom. Now we enter the electric units. Well, here are two groups of cables where the ends, if the electricity is flowing, here will be

the transition of electrons and protons, because it acts as a current, it is described as this. This small size has what is called a strong electric current, has what is called electricity power,

has what is called a voltage barrier. Now we discuss the power line strength. Power line strength or also called a power line is the current that occurs at the sender

the result of the number of electric supplies flowing from one point to another in a sequence every one time, yes, so the electric supply flows to the carrier every one time, that's the power of the electric current or the electric current occurs due to the presence of potential changes

or tension in the transducer medium between two points the first point the second point this is the end point of the transducer the unit of electrical wires in the international system is Ampere shortened with A then in the formula the electrical wire is written in the symbol letter I like this

I is large, the unit is A large. That's about the strength of the electric current. Next, the voltage of electricity. When we talk about the problem of electric voltage, we will think that we will be in line with the conductor that is in the power tower. This is the power tower, the electric network, the extra high voltage.

or the main channel of the high extra voltage called the sutek this voltage is very very high 150 kV it flows to the current current that is here this is a tower connected to the inter-revival from Java, Bali, Sumatra, and so on

Electric pressure is also called electric potential, namely the electricity energy needed to flow electricity every single moment through the ends of the conductor. Electric pressure is also meant as a current. Electric current that can be given to electrons

which flows through a closed circuit, yes, through a closed circuit. This curve is called the electric motion pattern, aka GGL, namely the energy that has an electric current source that is practically functioning as a electric motor pattern in the circuit. Then,

when we see one chain, this is a closed chain, where there is a voltage source passing through the conductor, there is a light burden towards the negative pole, here the positive pole, here the negative pole, the positive pole is called with high potential, the negative pole is called with low potential, here, while here it will flow

electric current from high potential to low potential while electrons flow from negative poles negative poles this goes to positive poles then at the point

this or at the point of the weight, there will be a meeting between the electric current and the electron. The large potential between the high potential that flows from the electric current earlier with the low electron potential, then there is a collision.

The gap between high potential and low potential is called potential difference. This potential difference is then called electricity voltage. So, the electricity voltage source is needed to create a voltage difference or electric potential difference.

by producing electron excess in one pole and reducing electrons in another pole. As a result, the electron flow will occur from the negative pole to the positive pole and at the same time will flow the conventional electric current, the positive pole, which is called high potential,

towards negative poles of low potential. See the picture. The difference between high potential and low potential is called the difference in electrical voltage. Electric voltage is divided by one volt and shortened to the letter V, Voltage. If written in electrical terms, the symbol is V.

That's about the voltage of electricity. Now, the voltage of electricity. When we talk about the voltage of electricity, we will run to the components. This is the voltage of electricity component R1, R2, R3. R is the abbreviation of resistor. The object is like this. Then the symbol in the end is the cash machine.

the symbol of the letter is R. The barrier can be interpreted as a resistance or resistance or resistance received by electrons that flow through a conductor through the molecules in it. Each conductor provides a resistance to electric current flow. Resistance occurs because it is caused by

every atom that withstands the movement of electrons, the movement of electrons, there is a resistance against the external electron. The formation of electrons or atoms is not counted in the flow of the conductor. Well, the electric current has a unit of ohm and is summed up with the letter R. This is

electricity supply next is electricity when we talk about electricity then our mind will go to the home appliances one of them is the lamp in the lamp must be written "..."Wi" if this lamp is written 60 watts

the television will be written 70 watts 120 watts then rice cooker, ice room, hard dryer, and so on then all of them will have the capacity of WEE WEE is a abbreviation of watt, a unit of electricity power Have you ever seen the tools in our house?

If we pay attention, then each of the electrical devices always contains the specifications of the device. For example, on the side lamp, it says 220W / 60W. It means that if this lamp is powered by 220V electricity, then the electrical power used by the wire or lamp is 60W. Then what?

Electric power is? Yes, the explanation of electricity is this. Power is the energy needed to do business or work. Electric power contains a lot of electricity that is used every single unit of time. Electric power is given with the symbol of the capital P, a symbol of power, and given with the unit of watts.

1 watt = 1 joule per second, energy per second, here it is related to electricity, the next type and source of electricity, we see here, there are two types of electricity, there is a type of electric current

or DC, direct current and here is the type of reverse-turned electric current or AC, alternating current so here in the graph symbolizes the tension of the time function so here is the straight line, the electric current, the voltage to the electric current in the same direction

but if the current is reversed, it is concluded that there is a positive half cycle and a negative half cycle, which means that it is reversed every periodization of the electric current. Let's discuss the first one, the reverse electric current, or in short, the AC alternating current.

AC is an abbreviation of Alternating Current, meaning the return curve. In electrical science, the return curve or AC is the large electric current and its direction changes periodically at a certain time. Let's see the time function voltage graph.

Yes, from negative to positive, this is the function of tension. If the horizontal is the function of time, then here if it turns back, the electric current is half the positive cycle, the other half of the cycle is negative, so it continues to flow, then the AC electric current

the hole is called the sinus hole or sinusoidal hole, this is an alternating current AC, it has to be reversed, so there is no positive or negative pole, now we see for an AC power supply

The voltage in one circuit of the wire changes with a certain rhythm, so the direction and size of the electric wire also always change. On the AC electric wire, the positive and negative poles cannot be determined, although the electric wire also has two ends. This is because

The AC current will flow alternately between the two ends of the period, which sometimes is in a positive position, in the other time position is negative. The electricity in our house includes AC electricity, because it is caused by the AC voltage from the PLN. For example, the source of AC electricity

The first is the electric generator. This electricity that is generated will be AC type. The second is the dynamo bicycle. So, the dynamo bicycle is clearly the generator that is arranged on two parts. There is a moving part and there is a silent part.

The moving part is called a rotor, the silent part is called a stator. If both are full and continuous, then the AC will be generated. The next is the type of direct current current.

DC is a abbreviation of direct current, meaning the electric current is in the direction In the history of electricity, the electric current in the direction is a current that flows in the direction and is large and constant. The image of the pressure function of the current is like this, here it is always constant, straight, the straight line is in the positive cycle, this is the DC electric current

then we enter the electric current in one direction, this is a one-way voltage operation, the circuit of the closed electric current with the same direction will produce a electric current that the direction is the same from the positive pole to the negative pole, for example, the DC power supply, there is an electrochemical element, a voltage element, an accumulator, a dry element,

thermoelements, photoelectric cells, and direct current generators. The easiest and closest to us is this, for example, a DC power source, namely this. There is a battery, there is an accumulator, this is the DC voltage source that is closest to us. Next, we will learn about electricity sources. The electricity in our house

is supported by various electrical sources in our country. There are many electric generators in our country because our country is full of natural resources. For example, an electric voltage source, an electrical power source, namely

there is a nuclear power generator, now we already have it in Paitong, East Java, there is already a nuclear power generator, then there is a water power generator, PLTA, there is a PLTA Gajah Mungkur, PLTA Karangkates, PLTA Jatiluhur, and so on, then

We also have PLTU, Power Power Builder, in Kangmojang, West Java, and so on. These are the power sources. Next, still on the power sources, is PLTANG, Wind Power Builder, then there is the Sun Power Builder, this is the photocell element.

solar cell then there is an electric generator ocean wave energy well here it turns out that the ocean wave is capable of being a generator that will never run out then how does the electricity finally come from the generator to our house what is the journey like? well like this

This is the power supply of the electricity, whether it is PLT-A, PLT-U, PLT-air, PLT-PB, ground heat. Then, from the generator, the electricity is generated. The electricity is still in a low position.

then here it enters the induction chamber in the induction chamber the electricity is raised using a trafo called a step-up trafo, a lifting trafo, after it is raised, then it is transmitted through a network to the electricity tower, distributed to other areas

Well, after arriving in a certain area to be used, then here it is lowered to the index finger guard again, but here the index finger guard contains a drop in tension, a step down, then after being lowered to the electric pole,

from the electric pole, there is still 20kV, 20kV or 5kV, 5kV, then in this pole, the voltage drop trafo is used again, lowered to be able to be used at home, to be 220V, after the 220V drop, this can be connected to our house,

In our house, we use electricity with 220 volts voltage, it can be used to watch TV, lighting, and so on. This is the journey of electricity from the generator to our house. Then, what is the scheme of the earth's power generation process? Here, if we look at the West Jamboree,

This is a production pipe, here is an injection pipe, so the production pipe is earth-hot, the injection pipe is also made by taking from the earth-hot, then it reaches here, the separator, then the color is used to move the turbine,

from the turbine, then it is generated by electricity, then it is channeled through the network like this. Well, this is not only from the production well hot water pump, which is called production, but also supported by injection wells. Well, let's see the small scheme, here is

production well here there is a injection well here this is production well this injection well together to be able to take heat from here this heat is then directed to the turbine turbine then the electricity problem then through the induction stove and is routed to the networks

if this is from the production source, it is reduced, then it is raised from the injection source, this is processed, the steam rises to the top, then supports the turbine and then the network is flooded, the same is the next process scheme for raising electricity and water resources, here the dam is a dam,

then here it is made a place for the current to get the force of the current from the water to the turbine, yes, in this turbine there is a water tap, in the water tap there is a rotor and stator, so this is part of the generator turbine

the electricity source from here then he is electric then the saloon is to the power tower then enter the Indus Garden, raise or lower the voltage, then distribute it to other areas. This is an example of the dam.

the water that is used by the force pushed from the water to move the tap on the water turbine. The next is the process of raising the wet element electric. Here, there is

electrolyte, yes, in the electrolyte there is a positive charge and a negative charge, then there is an electrode here, an electrode, yes, there is a negative electrode, there is a positive electrode, then from both of them, it is raised, it is inserted into the battery, then the negative electrode through the battery and this can go on and on

The scheme of the alternative electric generator process, now it turns out that garbage can be used as a source of electricity. What is it like? Well, like this, so from here, the truck carries the garbage, the garbage is then processed here, heated, and then here there is a change in the garbage

then heated and so on will get HCl gas and sulfur gas here produces steam, what we use is steam, then there is a generator turbine, yes, then here it can go to

electric power grid houses, then the network is connected through the electric network. This is the direct process, this is the indirect process. Well, like that, children, in this first part, which Mr. Guru can convey a little bit, this is to be able to be an illustration

related to learning the aspects of electrical materials later to know how far you can catch the knowledge from the teacher later the teacher will give you a task through the link that the teacher will share to the group MAPEL well, that's all I can say there is more than enough, I'm sorry and thank you for your attention once again before ending, please touch the subscription

then thumbs up if you like, thumbs down if you don't like and share with others. Hopefully it's useful. More or less, I'm sorry. Bilal Tufiq Walidah ya. Wassalamualaikum warahmatullahi wabarakatuh. See you at the next meeting.