LED's are the Light Emitting Diode, they are available in different types and with various color such as Red, Green, Blue, White, etc.
And the other good thing about them is they are easily available in any electrical shop nowadays at a cheap rates (they will cost you approximately 2 rupees per LED)
They work on DC source of 3 volts at there maximum power. They have very long life and are very efficient.
LED's mainly has two point for the connection i.e Cathode and Anode
If you are confused about how to identify which one is cathode and which is anode, then don't worry i will be giving you some cool tips.
In the above figure you can see a single LED having two different sized leg's.
Yes! this is the trick, the shorter leg is the Cathode (-) and the longer leg is the Anode(+).
Sometimes you may get a damaged or a used LED's, there it can be a difficult job to identify the cathode and anode. For that purpose there is an another trick i.e you have to look into LED to identify cathode and the anode. Study the picture below carefully to understand LED.
While viewing into the LED you will see a smaller lead and the bigger lead.
The smaller lead resembles the Anode and the bigger lead resembles the cathode.
Sometimes while using color LED, it is difficult to see inside the LED, there is a flat surface at the base of the LED resembling Cathode. You can see that in the picture naming (cathode index flat).
And if you connect this LED to two 1.5 volt batteries it will glow as in the above figure.
Resistor in connected in series with the LED in order to avoid high voltage from damaging the LED.
Value of the LED depend upon the brightness we need.
To know more about how LED's are colorful click here
They work on DC source of 3 volts at there maximum power. They have very long life and are very efficient.
LED's mainly has two point for the connection i.e Cathode and Anode
If you are confused about how to identify which one is cathode and which is anode, then don't worry i will be giving you some cool tips.
In the above figure you can see a single LED having two different sized leg's.
Yes! this is the trick, the shorter leg is the Cathode (-) and the longer leg is the Anode(+).
Sometimes you may get a damaged or a used LED's, there it can be a difficult job to identify the cathode and anode. For that purpose there is an another trick i.e you have to look into LED to identify cathode and the anode. Study the picture below carefully to understand LED.
While viewing into the LED you will see a smaller lead and the bigger lead.
The smaller lead resembles the Anode and the bigger lead resembles the cathode.
Sometimes while using color LED, it is difficult to see inside the LED, there is a flat surface at the base of the LED resembling Cathode. You can see that in the picture naming (cathode index flat).
Resistor in connected in series with the LED in order to avoid high voltage from damaging the LED.
Value of the LED depend upon the brightness we need.
To know more about how LED's are colorful click here
Just like I thinking, 3 VDC for supply voltage of LEDs, need resistor in series with LED.
ReplyDeleteYour post more complete, well done Sagar