Insight - How LED works
Table of Contents:
- Insight - How LED works
- Front View
- Structure
- Outer Glass Casing
- Internal View
- Leads
- Cavity
- Semiconductor Die
LED (Light Emitting Diode) is a special diode that emits light when an electric voltage is applied to it. It is common electronic component that is being used in devices like TV, computer, etc. generally for indicating purpose. They are available in various colors like red, yellow, green etc.
There are two leads of an LED that are used to supply input voltage. The longer lead is positive and known as ‘Post’, and the smaller is negative known as ‘Anvil’ as shown in the image above.
Comments (6)
amazing. turns out how little
amazing. turns out how little we know about the most commonly used electronic component.
gr8 work EngineersGarage!
That made my concept clear.
That made my concept clear. Thank you Engineersgarage! How ever, I would like to know more about the last point mentioned in this article."The material used and doping levels are set so as to produce photons with wavelength in the range of desired color of light in the visible spectrum". What is this doping level? How is it selected?
good work..
good work..
The doping level is adjusted
The doping level is adjusted my the amount of doping material used for making the semiconductor..
And on the basis of the amount of doping material the amount of photons is calculated..
Which let us know the colour of LED..
I think this may clear the doubt...
Really good work. I wonder
Really good work. I wonder how you took that cavity out of the glass casing without any damage.
nice work dhawal likes it
nice work dhawal likes it