Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

tpr2_u4: eca_LED

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 11 de junio de 2020 por Maximino R.

11 visualizaciones

Turn on/off of an LED with a push button

Más información Transcripción

Descargar la transcripción

Okay, what we have here is our electronic circuit, an electronic circuit control 00:00:00
And what we want to control is this component, it's called a LED, a diode 00:00:09
And to control this LED what we have is a push button 00:00:18
And as well we have a resistor to protect the LED against overcurrent. So how when too much current goes through the LED it can damage the LED. 00:00:24
Ok, let's see the circuit, the electric circuit 00:00:43
Here we have the battery 00:00:47
We have two batteries, they are connected in series 00:00:49
The positive terminal of one of them is connected to the negative one of the other 00:00:57
And so this is the positive terminal of this battery 00:01:03
The current goes out of this battery through this wire, goes through this wire, passes through the LED, through the resistor 00:01:09
And when we push the button, the current passes as well through this wire and comes back to this battery 00:01:21
So, if we want to have current in this circuit, we need to push this button 00:01:32
And so, when the current goes through the LED, the LED lights up 00:01:39
We have here the simulator 00:01:46
We have the same circuit 00:01:51
And apart from the electric circuit, we have a voltmeter and an ammeter 00:01:53
Okay, let's see how it works 00:02:02
It's the same circuit, it's a bit more complicated to see how the current flows through the circuit 00:02:05
But let's try it 00:02:13
This is the positive terminal of the battery 00:02:15
It goes through this port 00:02:18
This line is the same line as you can see here 00:02:22
So the current goes through this, through this, goes through this, enters the ammeter. We have here the ammeter. The ammeter measures the current, goes out of the ammeter, goes here. 00:02:26
This is the same point, the same line, so passes through the LED, passes through the resistor, okay, now this is the same line, goes through this wire 00:02:44
and when we have here when we have the push button here pressed goes through 00:03:03
the push button and follows this line and comes back to the battery through 00:03:11
its negative terminal now I'm going to start the simulation of this circuit 00:03:21
okay so now we are not pressing we are not pushing the bottom so no current goes 00:03:31
through the circuit okay and across the LED we only have 88 millivolts when we 00:03:39
push the bottom current goes through the circuit as we explained and the voltage 00:03:52
drop across the LED is 2.16 volts 00:04:01
and the LED is lighting up as you can see here 00:04:07
if I stop pressing, no current, no light 00:04:13
I stop the simulation and that is everything 00:04:18
Subido por:
Maximino R.
Licencia:
Reconocimiento - Compartir igual
Visualizaciones:
11
Fecha:
11 de junio de 2020 - 19:39
Visibilidad:
Público
Centro:
IES ALFREDO KRAUS
Duración:
04′ 25″
Relación de aspecto:
1.42:1
Resolución:
966x680 píxeles
Tamaño:
5.01 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid