Features and Benefits of Light Emitting Diodes

Regarding the relevant knowledge of light-emitting diodes, compared with ordinary diodes, light-emitting diodes have their own characteristics and some unique advantages of light-emitting diodes. Here are the seven characteristics and five advantages of light-emitting diodes for your reference.

Features of light emitting diodes
1. Voltage

Light-emitting diode LEDs use a low-voltage power supply, and the power supply voltage is between DC 3-24V, which varies according to different products. There are also a few DC36V, DC40V, etc., so it is a safer power supply than using high-voltage power supplies, especially suitable for public places.

2. Effectiveness

Energy consumption is reduced by about 80% compared with incandescent lamps with the same light effect, and reduced by about 40% compared with energy-saving lamps.

3. Applicability

The volume is very small, and each unit LED chip is a square of 3-5mm, so it can be prepared into devices of various shapes, and is suitable for variable environments

led

4. Stability

100,000 hours, the light decay is 50% of the initial

5. Response time

The response time of the incandescent lamp is milliseconds, and the response time of the LED lamp is nanoseconds

6. Environmental pollution

Does not contain harmful metals such as mercury.

Color light-emitting diodes are conveniently chemically modified to adjust the energy band structure and forbidden band width of the material to achieve multi-color emission of red, yellow, green, blue and orange. The working voltage of the red light tube is small, and the working voltage of the red, orange, yellow, green and blue light-emitting diodes of different colors increases in turn.

7. Price

The price of LED is becoming more and more popular. Due to the power-saving characteristics of LED, people may replace incandescent lamps with LED lamps in the near future. Some urban roads, schools, factories and other places in our country have been replaced with LED street lamps and energy-saving lamps.

Advantages of LEDs
1. Small size

An LED is basically a tiny chip encapsulated in epoxy, so it's very small and very light.

2. Low voltage

LED power consumption is quite low. Generally speaking, the working voltage of LED is 2-3.6V. It only needs a very weak current to emit light normally.

3. Long service life

Under the right current and voltage, the life of LED can reach 100,000 hours.

4. High brightness, low heat

LED uses cold light-emitting technology, and its calorific value is much lower than that of ordinary lighting fixtures of the same power.

5. Safety and environmental protection

LEDs are made of non-toxic materials, unlike fluorescent lamps that contain mercury that will cause pollution, and LEDs can also be recycled and reused.

How to judge the positive and negative poles of light-emitting diodes

led


Many novice friends do not know very well about the method of judging the positive and negative poles of light-emitting diodes, how to judge the positive and negative poles of diodes, here is a summary of the method of using a multimeter to judge the positive and negative poles of self-flickering light-emitting diodes, let’s learn together.

LED symbol

The knowledge about light-emitting diodes introduces the symbolic representation method of light-emitting diodes, and gives the structure diagram of light-emitting diodes and standard symbol drawing methods. After power-on, light-emitting diodes can emit red, yellow, green and infrared light, etc. Let’s learn together .

Top