LED diode working principle and stability control # TECHNICAL EDUCATION
Strength control of circuit elements
WHAT IS LED ???
LED means light emitting diode. P and N are semiconductor semiconductor circuit elements made of germanium and silicon. It has two pins, anode and cathode.
Anode plus cathode - has poles, ie feeding. When the LEDs are polarized in the right direction, they emit light and emit light at different wavelengths such as visible light, infrared light and ultraviolet light.
The LEDs I saw in my hand operate between 2.2 volts and 3.7 volts. Today, there are a lot of diodes, and all operating voltages have different working principles.
In everyday life, LEDs with different tasks are used in many areas.
There are many different sizes and shapes of LEDs such as 2 mm, 3 mm, 5 mm, 10 mm.
Features that bring LEDs in front of other lighting products;
Ir Average lives of 50,000-100,000 hours.
 They do not need maintenance.
They begin to emit light in lar 200 ns.
Lar They are efficient light sources.
Ve They are very resistant to shocks and vibrations.
Ler They have minimum temperature and light pollution.
. They use the energy in the lowest way.
Göster They perform well in cold weather.
Güvenilir They are the most reliable lighting devices against accidents.
 There are different color options.
Lar They are environmentally friendly.
Stability Control:
Ledin find anode and cathode legs
It is very easy to find the anode and cathode legs. First look at the length of the legs. The long leg anode is the short leg cathode. Another method is that when you look at the bottom of the LED, one side is cut. Close to the leg is the cathode. The third method is that the large (triangular) part is the cathode and the small (flat) part is the anode.
If you make a reverse connection, if you apply a + voltage to the cathode, the LED will behave as a normal diode. No light. Current proof. After a certain value is broken.