How does an LED light source work?

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. Don’t let that big word scare you! The electrical resistance of the filament causes it to get so hot that it glows, producing light.

What is the source of LED lights?

LEDs are formed from various doped semiconductor materials in the form of a P-N diode junction. When electrical current passes through the junction in the forward direction, the electrical carriers give up energy proportional to the forward voltage drop across the diode junction which is emitted in the form of light.

Why do LED light are usually used than fluorescent light?

LEDs are up to 50\% more efficient than fluorescent lights – so they use less energy. They dissipate heat with what the industry calls heat sinks, a thermal management tool that is key to the light’s longevity. Heat degrades LEDs, which is why they are designed to normally operate around 40 degrees.

What are the application and characteristics of LED?

Characteristics of LED

• Light Generated by LED is Directional. A. LED is all forward directional lighting, not Omni as conventional light bulb.
• LED can Generate Different Light Color. A.
• Temperature will Affect LED Efficacy. A.
• Low Energy Consumption. A.
• Long Life.

Why is LED the most important source of light?

This filament is the cause of high electrical use and when it goes bad, the light is useless. LED lights don’t have that filament, and therefore are longer lasting and take less electricity. The advantages of the LED lights are fairly obvious. LED lights typically have a life span of around 50,000 to 100,000 hours.

Why is LED lighting better?

LED is highly energy efficient – Less heat, more light, lower cost. Use less electricity for the same light output – 85\% less electricity when compared to conventional lighting and around 18\% less electricity compared to CFL. LED can make a big impact on your energy use.

Are LED lights good for plants?

Offering low energy usage, low heat, and color optimized for growth, LED lights are the most efficient, effective, and customer-friendly way to grow plants at home than growing with fluorescent lights or incandescent lights.

What applications are LEDs used in?

Applications of LED :

• Picture phones and digital watches.
• Camera flashes and automotive heat lamps.
• Aviation lighting.
• Digital computers and calculators.
• Traffic signals and Burglar alarms systems.
• Microprocessors and multiplexers.

What is LED and write any two uses of LED?

LEDs (Light Emitting Diodes) are the latest development in the lighting industry. Made popular by their efficiency, range of color, and long lifespan, LED lights are ideal for numerous applications including night lighting, art lighting, and outdoor lighting. LED lights are directional light sources.

What is the importance of LED light?

LED lights are one of the latest inventions of scientists for reducing the negative effects of conventional bulbs to the environment. Studies reveal that LED bulbs produce less carbon than older bulbs, which can be very useful to get rid of the ill effects of global warming.

Why source of light is important?

Both provide important energy resources. The main source of light and heat for all life on Earth is the sun. People use the sun’s light to see during the day and have captured the sun’s heat energy through solar panels to make electricity. All plants use the sun’s light energy to grow and produce food.

Why are LED lights important?

Not only do LED holiday lights consume less electricity, they also have the following advantages: Safer: LEDs are much cooler than incandescent lights, reducing the risk of combustion or burnt fingers. Sturdier: LEDs are made with epoxy lenses, not glass, and are much more resistant to breakage.

What is an LED light source?

The LED is a light source which uses semiconductors and electroluminescence to create light. There are two major kinds of light emitting diodes: LED and OLED. The LED is different than EL lamp in that it uses a small semiconductor crystal with reflectors and other parts to make the light brighter and focused into a single point.

What are LEDs and how do they work?

What are LEDs and how do they work? LED stands for light emitting diode. LED lighting products produce light up to 90\% more efficiently than incandescent light bulbs.

What is LED (light emitting diode)?

LED or Light Emitting Diode is a light source device. It releases light when current passes through it. The LED concept is based on a semiconductor device where holes and electrons recombine to produce energy in the form of photons. The symbol of the LED is shown below:

What are the advantages of LED lighting?

When designed well, LED lighting is more efficient, versatile, and lasts longer. LEDs are “directional” light sources, which means they emit light in a specific direction, unlike incandescent and CFL, which emit light and heat in all directions. That means LEDs are able to use light and energy more efficiently in a multitude of applications.