First, the classification type.
Low power (such as 5mm straw hat, 5mm condenser type, 3528 package, etc.), about 0.06W.
Medium power (such as 8mm straw hat, 10mm straw hat, 5050 package, etc.) 0.2W-0.5W.
High power 1W, 3W, 5W, 10w ... 100w.
Second, LED lamp beads is the abbreviation of light-emitting diodes referred to as LED, which is a popular call.
Third, the characteristics
1. Voltage: LED lamp beads use low-voltage power supply, the supply voltage between 2-4V, depending on the product varies, so it is a more than the use of high-voltage power supply; more secure power, especially for public places;
2. Current: working current at 0-15mA, the brightness increases with the current variable
3. Performance: 80% less energy consumption than incandescent light.
4. Applicability: very small, each unit LED small piece is 3-5mm square, it can be prepared into a variety of shapes of the device, and suitable for variable environment.
5. Stability: 100,000 hours, the light failure for the initial 50%.
6. Response time: the response time of the incandescent lamp in milliseconds, LED light response time for the nanosecond.
7. Environmental pollution: no harmful metal mercury.
8. Color: change the current can be discolored, light-emitting diode easily through the chemical modification method, adjust the energy band structure and band gap, to achieve red, yellow, green orchid orange multi-color light. Such as small current when the red LED, with the increase in current, can turn into orange, yellow, and finally green.
9. Price: LED lamp beads cost price corresponding to the traditional new light source is more expensive, compared to incandescent, dozens of white LED prices can be the price of an incandescent lamp, and usually each group of lights Need to be composed of 300 ~ 500 diodes