Small power (e.g. 5mm straw hat shape, 5mm spotlight type, 3528 package, etc.), about 0.06W.
Medium power (such as 8mm straw hat shape, 10mm straw hat shape, 5050 package, etc.) 0.2W-0.5W.
The high power ones are 1w, 3w, 5w, 10w...100w.
Two: led light-emitting diode is the acronym of led light beads abbreviated as LED, which is a common name for the
Three: Specificities
1. Voltage: led light-emitting diodes use a low-voltage power supply, the supply voltage is between 2-4V, which varies according to the product, so it is a safer power supply than using a high-voltage power supply, especially suitable for public places;
2. Current: working current in 0-15mA, brightness with the increase of current and variable
3. Efficacy: 80% less energy consumption than incandescent lamps with the same luminous efficacy.
4. Applicability: Small, each unit LED chip is a 3-5mm square, so it can be prepared in various shapes and is suitable for variable environments.
5. Stability: 100,000 hours at 50% of initial light decay.
6. Response time: its incandescent lamp response time is milliseconds, led light emitting diode response time is nanoseconds.
7. Pollution to the environment: no harmful metal mercury.
8. Color: change the current can change color, light-emitting diodes conveniently through chemical modification methods, adjust the energy band structure of the material and the band gap, to achieve red, yellow, green, blue and orange multi-color light. Such as small current for the red LED, with the increase of current, can be changed to orange, yellow, and finally green.
9. Price: led light-emitting diode cost price for the traditional new light source is correspondingly more expensive, compared to incandescent lamps, dozens of white LED price can be comparable to the price of an incandescent lamp, and usually each group of signal lamps need to be made up of 300 ~ 500 diodes.