LED lights come in both AC and DC versions.
You can buy LED lights that use 12 volts directly or the ones that use AC but then convert the power to DC.
The LED light bulbs in your house use 120 volts AC.
However inside the LED light bulb base are transformers and capacitors which lower the voltage from AC down to DC current.
The LED light bulb itself uses DC current but it takes in AC as the main power.
Then the LED bulbs transformers inside them convert the AC current to DC.
An LED bulb produces light by passing the electric current through a semiconducting material—the diode—which then emits photons (light) through the principle of electroluminescence.
It essentially means that a material (in this case, the diode) casts light when power is applied to it.
A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it.
Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.
A diode, as in LED (Light emitting Diode), is a combination of different materials that does this and as a result light is emitted.
As electricity passes through these materials the electrons in the compound become excited and emit photons of light.
Unlike incandescent light bulbs, LEDs don't produce light using heat.
This is part of what makes them so energy efficient.
The downside is that their components can be sensitive to overheating, which can cause them to burn out prematurely.
Because LED lights have good brightness, providing absolute safety for consumers when using them for service in life and extremely long life with 24/7 operating frequency, with LED lights you can turn on and Use them all day, no need to worry about explosion or damage when forgetting to turn off.
In order to explain how an LED works we must explain the four main components of an LED lamp; the LED Chip, the Driver, the The LED chip emits lights the in the bulb.
Heat Sink, and the Optic lens.
The driver then regulates the input current.
The Heat Sink draws the heat away from the LED Chip.