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LCR circuits - Contenido educativo

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Subido el 19 de junio de 2019 por Isabel L.

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The polars are between electric and electronic circuit because you can have these types of parts in electric circuit and also in electronic. 00:00:00
But from my point of view they are more important in electronic than in electric circuit. 00:00:19
In any case, we are going to study this dipole and then its application to different things in different moments. 00:00:29
We will start with some basic contents and then we are going to describe the importance of resistance, resistances, condensators and coils. 00:00:43
So let's start with the introduction, which is just only several contexts, important, several and very basic contexts, which is electric current, for example, is the movement of electrical charge, of electrical loads. 00:01:07
But it is also the church, the electricity is a characteristic of the matter, it's inside the matter, if you have matter you have electricity. 00:01:26
So, it's a very natural nature phenomena that in our society can be used for several things. 00:01:39
Nowadays we usually use electronic devices, so electricity is very important in our daily lives, and some basic knowledge of it and how it works I think is important also. 00:01:58
So, to improve the movement of churches we need something material support, material support which is electrical circuits. 00:02:19
They usually have different conductors, also some batteries and obviously some elements of control, 00:02:33
as we have already a study before but circuits you can have a three important 00:02:45
settlements which are firstly resistance resistance is the opposition of the 00:02:59
things to the movement of charge inside well but we can also use a specific 00:03:05
resistors that can help us to control the value of the voltage in for 00:03:15
example in another part of our circuit or in a relay or something 00:03:24
similar. And as we have already said, the resistors can be variable, can have a variable 00:03:34
with different physical phenomena. For example, we have already studied in second of ESSO 00:03:48
the light resistance dependence which is a resistance that increase when you 00:03:56
have a pure light if you have a low intensity of light and we have also for 00:04:06
example potentiometer or another variable resistors but we also have a 00:04:20
fixed six value for and to know this value we usually use the color code for 00:04:27
resistors the color code for resistor consists in three in four lines one of 00:04:37
these lines just only can have very few colors, golden, silver, white, so you can know it 00:04:45
is the fourth or the one strip. The other three correspond to the nominal value of the resistor. 00:05:01
The first is a digit and the second also and the third is a number of O's, a number of zeros that 00:05:18
you must add it each is a strip each line has different color so a black for 00:05:28
example correspond a to all to the to the numeric value of a brown one red two 00:05:39
orange 3 yellow 4 green 5 blue 6 violet 7 gray 8 and white 9 so you can know the value of the 00:05:51
resistor taking into consideration the colors of the digit of this strip the position and with 00:06:08
If you use this, you can know the nominal value of the resistors. 00:06:21
The fourth line just only can give you the tolerance, it depends if you have golden one 00:06:30
is 5%, if you have silver one is 10%. 00:06:39
will do some exercise of this because it's the only way that you can 00:06:45
understand it properly. The second dipole that we are going to study is 00:06:50
condenser. Well a condenser can be defined, you have a different kind 00:07:00
types of condenser but the most the typical one is formed by metal places 00:07:09
between which there is a dielectric when a condenser accumulates current there is 00:07:20
a time to be in the same also called relaxation time for both loading and 00:07:28
downloading you have different times so what happened is that the condenser is 00:07:37
like a glass and the current like a water you need to to have a glass plenty 00:07:47
of water if you want to close your circuit. So they usually use as tempers because the time 00:07:59
that you need to fill the condenser is the product of resistors and the capacity of the condenser. 00:08:12
the capacity we also do some exercise and well capacity of condenser the unit for capacity is 00:08:27
faraday but faraday is so so big to be so we usually use nano or micro faraday which are 00:08:40
submiter poles of Faraday. Well, the important element is coil. As we have already known, 00:08:52
if you have current, if you have charge which are moving, you have a magnetic field. So the 00:09:07
The good news is that the magnetic fields can interact in one with each other, and this is usually used, for example, in electric machines, in motors, or in alternators, for example, in alternators, in generators. 00:09:19
because it is usually used to generate electricity, because if you have a variable flux of this 00:09:40
magnetic field you can generate an electric field, an electric electricity. 00:09:54
So this phenomena, which has a magnetic flux changing in the time, is usually called Faraday 00:10:02
length loss and is in so many ways is more or less the same as you have for 00:10:17
the condenser so you can also use coil as tempers but they you 00:10:30
You need very strange values to have the same effects, so in practice we don't use it. 00:10:41
In any case, it's important because they have other uses, such as electrical machines, motors, 00:10:52
alternators, dynamo, so on, that we have already studied in psychoanalysis, and we can also 00:11:01
use in other ways. 00:11:09
That is all for today and I invite you to do the exercise because to clarify other contents 00:11:14
is need to do more practice. 00:11:25
Autor/es:
Isabel Lafuente
Subido por:
Isabel L.
Licencia:
Reconocimiento - No comercial
Visualizaciones:
134
Fecha:
19 de junio de 2019 - 18:16
Visibilidad:
Público
Centro:
IES JAIME FERRAN
Duración:
11′ 29″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
1440x1080 píxeles
Tamaño:
211.22 MBytes

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