All about LED




Hi friends!  today i am telling you about LED light. 
First of all the full form of LED is light emitting diode . It is more important to know inventor of LED
"Nick holonyak and oleg Losev and H.j Round " are invented the LED .
  Today LED light is more popular than other light. It has many reasons. 

The advantage of LED :-
1.)  Low operational voltage and less power consumption.
2.)  Fast action and no warm - up time required.
3.)  Long life and ruggedness.
4.)  Fast on - off switching capability.

 5.)  Most importance advantage it decrease the electricity Bill , so poor man can use these money to another work.

 6.) Save electricity so government and people both are Happy.

 Now let's time to know ""what is LED and how does  it work"" ??

What is LED ??
LED is a two lead semiconductor light source. It is a heavily doped p-n junction diode . which emits spontaneous light (radiation ) under forward bias or when electricity is supplied. ( as shown in figure)

How does LED work ??

When the diode is forward biased electrons moves from  n to p type and holes (+) moves from p to n type .
Due to recombination of holes(+)ve  and electron (-) ve , the energy is released in the form of light (photons) . This effect is called electroluminesce. Photons energy is equal to or slightly less than energy gap are emitted..

 LED light is available in red, yellow orange, green and blue colour .
Because LED can emit these colour light .
The compound semiconductor Gallium Arsenide- Phosphide is used to making LEDs of different colours. 
  Which gas is filled in electric LED bulb ??
Argon  gas is a commonly used.

 But  as like two face of one Coin  LED light has also disadvantage,

 Disadvantage of LED lights:-

 1.) LED light is more expansive than regular light.  The price of LED is measured in price per lumen, so the brighter bulbs than can light up an entire room is quite expansive.

 2.) LED lights may damage our eyes, According to new research . A study has discovered that exposure to LED light can cause to irreparable harm to the retina of human eyes.

Comments

Post a Comment

Popular posts from this blog

Reliance jioPhone 2 is much better to jio phone:- click here to know how?

Image
Hello friends , Today i am talking about jio phone 2 which is launch in 15 August . This phone is upgraded version  to older phone of jio and give many new features. To know more read full article. Reliance JioPhone 2 vs JioPhone: What’s new in the latest Jio smart feature phone Reliance jio will be  launched the  gadgets - jio phone 2 , Giga Tv ( jio set top box) and Giga fibre ( router) Reliance JioPhone 2 with upgraded specifications and new design will be available at Rs 2,999. Here’s what has changed in the new JioPhone. JioPhone 2 is priced at Rs 2,999, and will be available starting August 15.(Reliance Jio) Reliance Jio on Thursday announced JioPhone 2, a high-end variant of its smart feature phone. Priced at Rs 2,999, the new Jio smart feature phone will be available in India starting August 15. The company also introduced a new Jio Monsoon offer under which customers can replace their older JioPhone for the new JioPhone 2 at an exchange price of Rs 500. JioP
Read more

How to surf web without INTERNET ??

Image
Hello friends! Here a good news for everyone .   when your internet conection end then you can't surf web . Now don't worry ;   No internet on your phone? Here's how you can still surf web?? Google updated its Chrome browser for Android to include a nifty feature that will end concerns about surfing the web even when there is an active internet connection. Internet on mobile has become more of a necessity than a luxury, and the affordable 4G data rates have spiked India's internet consumption through the roof. Even then, there are times when we are left without an active internet connection and Wi-Fi in the area. Thanks to Google, you can overcome the feeling of being digitally handicapped at those times. Google rolled out a new feature for its Chrome browser on Android platform, which has more than 2 billion devices, to help users achieve what hasn't been possible until now. Amanda Boss, Product Manager, Offline Chrome for Android, announced Chrome
Read more

How to create blogger website with zero investment ?

Image
  How  to create blogger website with zero investment ? Hello friends , welcome to my blog Today , i am going to tell you about "how to earn money from INTERNET"? for this you have many ways to earn money from internet. But i think blogger is the best way to earn from internet if you have interest to write . Because blogger is free and you will be start it with  zero investment.  When your blog popular among reader then AdSense will be give ads on your blog and then any viewer click on ads Google AdSense will give you money. Yes it true !! Now if you are interested to this , i am going to tell you "How can you create blogger website "?  Following simple step for this:- 1.) Sign in to Google.( if you have not a Google account then create account first . click here to create Google Account https://accounts.google.com/SignUp?hl=en 2.) Go to blogger through google search bar. 3.) Click on create new blog. When you click on this then one form is
Read more