Light Emitting Diode: LED .


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What is a LED?. Light-discharging diodeSemiconductorHas extremity. Driven: How It Works. At the point when current streams over a diode. Negative electrons move one way and positive gaps move the other way. Driven: How It Works. The wholes exist at a lower vitality level than the free electrons. Subsequently when a free electrons falls it misfortunes vitality .
Transcripts
Slide 1

Light Emitting Diode: LED

Slide 2

What is a LED? Light-radiating diode Semiconductor Has extremity

Slide 3

When current streams over a diode Negative electrons move one way and positive gaps move the other way LED: How It Works

Slide 4

The wholes exist at a lower vitality level than the free electrons Therefore when a free electrons falls it misfortunes vitality LED: How It Works

Slide 5

This vitality is discharged in a type of a photon, which causes light The shade of the light is dictated by the fall of the electron and subsequently vitality level of the photon LED: How It Works

Slide 6

Transparent Plastic Case Terminal Pins Diode Inside a Light Emitting Diode

Slide 7

Kinds of LEDs

Slide 8

How to Connect a LED: Requires 1.5~2.5V and 10 mA To anticipate over-burdening, utilize resistor 470 Ω

Slide 9

How to Connect a LED:

Slide 10

Connect LED to BS2 LED is on when P0 is high LED is on when P1 is low

Slide 11

Connect Multiple LEDs to BS2 8 LEDs are associated with BS2 every I/O stick (P0-P7) is permitted to sink 6.25mA

Slide 12

Case Study: Blinking LED

Slide 13

Case Study: Blinking LED Pbasic program to make a LED squint yield 0 Main: low 0 pause 1000 high 0 pause 1000 goto Main Make pin0 a yield Loop starts here Turn LED on Pause for 1 sec Turn LED off Pause for 1 sec Go back to start of circle

Slide 14

Experiments Flash a LED Single LED Multiple LEDs Traffic Light by utilization of LEDs

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