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ELECTRIC elements - Contenido educativo
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we are going to describe some electric components the more important that we
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are going to use obviously and some of them such as resistors just only
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control the values of the current electrical current but they can also use
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as inputs in an electronic circuit if there are variable resistors or
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potentiometers because they can transform the position so a physical
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physical action into a current something that happens in the current
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Buzzers are also outputs, they emit sounds, lamps are also outputs, they can bright, and fuses are protection elements,
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And switches are to control the circuit and the way it works.
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The resistor. The resistor limits the flow of electrical current through the circuit by using the Ohm's law.
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But the value of the resistors can be different and we can know by using the color code.
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A resistor such as this usually has at least four rings, four bands.
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three has different color and the fourth one just only be a gold or silver
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so we can know the value of the resistor by using this code it is very easy to know
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The band 1 and 2 are just only digits and the value of this digit is known by its color.
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Black is 0, brown is 1, red is 2, orange 3, yellow 4, green 5, blue 6, violet 7, grey 8 and white 9.
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So, you can know the values, two digits. And the third one is an exponent of something. So, it's connected to the multiply of the value.
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and the value of this exponent is known by its color
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so for example if you have something brown, brown, brown
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is 11, but you should multiply by 10
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So it will be 110. And the fourth band is just only the tolerance. If it's gold, it's the 10% of the main value.
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Sorry, it is silver, it is the 10% of the value, and it is gold, it is the 5% of the value.
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As you can see in this example, for example, you can see here, you can see some example.
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The resistors can also have more than four bands, such as 5-oxys, and this is a little bit more complicated in this particular case.
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You can see some examples, 3-3, in this example, for example, 3-3 because it's orange, orange, orange, and it is multiplied by 2.
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so if they either could be no it is you can also have a variable resistance of
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potentiometers in this particular case the connection the resistance the
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resistance can be different because we can change the length of this resistance
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so by the connection it was it usually have three connections and what and the
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real connection in the circuit is one and two so you have the the output one
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and the output into and the resistance and can be calculated by this one the
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so it depends of its length research are other other electric components they
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emits a blue scene when the current flow and it has polarity so you should be
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careful when you connect them both are very useful because they are really
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important and in a bulb you have the you have a distant filament which which by
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Joule's effect heats a lot and it emits light when the heat is enough
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this is its symbol just only to protect something generally a component by Joule's
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effect the filament always heats so if the heat is enough the filament can melt and then the current
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flow the flow is stopped it is the same as a switch open for control it can be different types
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it just only have to position open and close one that can allow let the current flow flows can be
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one switch or just a push and the other the other types other types is when has
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two or more or more ways that it is usually used to different
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controls. Limit switches which is a device that works between different
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position by a lever or so on and I hope it can be useful
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- Idioma/s:
- Autor/es:
- ISABEL LAFUENTE
- Subido por:
- Isabel L.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 200
- Fecha:
- 6 de noviembre de 2018 - 16:58
- Visibilidad:
- Público
- Centro:
- IES JAIME FERRAN
- Duración:
- 09′ 12″
- Relación de aspecto:
- 1.78:1
- Resolución:
- 1920x1080 píxeles
- Tamaño:
- 89.15 MBytes
