Abstract: LED lamp beads have the advantages of small size, low power consumption and long service life, and are widely used in the decoration of our living lamps. This article mainly introduces how to determine the number of watts of LED lamp beads? The difference between the led lamp bead and the patch.

1. Voltage: LED lamp bead uses low voltage power supply, the supply voltage is between 2-4V, depending on the product, so it is driven by a higher voltage than the high voltage power supply; it is especially suitable for public places;

2. Current: The working current is between 0 and 15 mA, and the brightness becomes brighter as the current increases.

3. Performance: Energy consumption is reduced by 80% compared to incandescent lamps with the same efficacy.

4. Applicability: Very small, each unit LED chip is 3-5mm square, so it can be made into various shapes and suitable for variable environments.

6. Response time: The response time of the incandescent lamp is millisecond, and the response time of the LED is nanosecond.

7. Environmental pollution: no harmful metal mercury.

8. Color: Change the current to change color. The light-emitting diode can easily adjust the energy band structure and band gap of the material through chemical modification method to realize multi-color luminescence of red, yellow, green and blue. For example, a red LED with a small current can turn orange, yellow, and finally green as the current increases.

1, in-line small power specifications are: straw hat / steel helmet, round head, concave, oval, square (2 * 3 * 4) bullets, flat head, (3/5 / flat / bread type) piranhas.

2, SMD patch is generally divided into (3020/3528/5050 these are front light)/1016/1024, etc. These are side light sources.

3, high-power LED can not be classified into the patch series, their power and current use are different, and the photoelectric parameters vary greatly. If a single high-power LED light source is not equipped with a heat-dissipating base (generally a hexagonal aluminum seat), its appearance is not much different from that of a normal patch. The high-power LED light source is circular, and the package is basically the same as the SMD patch. However, there are essential differences between SMD patches in terms of use conditions/environments/effects.

The led lamp bead is the same as the core inside the LED patch. The angle of the lamp bead can be made very small. (The light is concentrated, the shot is far, but the illumination range is limited.) The general angle of the patch is relatively large. . Supplement: The lamp power is large and the chip power is small.

1, the power of LED lamp beads different high-power LED lights generally use 1W high-power LED lamp beads, 1-3W coexistence of high-power LED lamp beads, COB high power these. High-power lamp bead single LED power can achieve more than 200W. Low-power LED lights, generally use patch light beads, mainly including these: 5050 lamp beads, each 0.2W, 3528 lamp beads, each 0.06W, 3014 lamp beads, each 0.1W, 5630 lamp beads, Each 0.5W, 5730 lamp beads, each 0.5W.

2. Cost difference From the perspective of product cost, the cost of high-power LED lamp bead is higher than the cost of low power. First, the cost of high-power LED itself is high. Second, high-power LEDs need to add aluminum heat sink, and small Power can be achieved with ordinary circuit boards and natural heat dissipation.

3. Application of LED lamps Different high-power LEDs are basically used in products that require high light source per unit area, such as LED ceiling lamps, LED floodlights, LED bulbs, street lamps, etc. The low-power LED is basically used on products with less patchable area and poor heat dissipation, and has low requirements for light source illumination per unit area, such as LED ceiling lamps, LED fluorescent lamps, LED panel lamps, and LED strips. Wait.

Low power (such as 5mm straw hat, 5mm concentrating, 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 is 1W, 3W, 5W, 10w...100w.

Led lamp beads related articles:

What are the classification of led lamp beads? What are the types of led lamp beads?

Led lamp bead parameter description, LED lamp bead selection skills

Led lamp bead model brightness ranking _led lights are not bright how to repair

Detailed calculation method of led lamp resistance

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