How to choose the right LED light

First, a judge from the outside

 A qualified product must be of reasonable structure, sensitive surface treatment, structural and functional matching of various components, complete and clear product labeling, the visual size of lamp size according to the space used, including packaging and product instructions.

Then, the light source


Due to technical limitations, most of the high-quality light sources are now better feedback from the US, Japan, and Taiwan. The key to various quality lamps is the difference between service life, color temperature, and light efficiency, and of course the control of the illumination angle. The visual inspection of higher quality light sources is more difficult to distinguish when the lamp is turned off and the technical parameters provided by the manufacturer are usually necessary.

Second, the driving force


Many put the driving force in the human heart, which is enough to reflect the protagonist. The parameters specified by the manufacturer are reviewed first. Since the LED-amp voltages have a negative temperature coefficient, they are not fixed and will vary with temperature. Analysis of main parameters: input voltage, output voltage, output current, output power, power factor, line indication, temperature increase, overvoltage protection, overcurrent protection, etc.

Then heat treatment


LEDs are sensitive to temperature, and the negative temperature coefficient is also mentioned in the front. Therefore, it is necessary to review heat sink treatment. In theory, the heat sink material is more suitable for aluminum, but it also distinguishes between aluminum, aluminum and cast aluminum. In addition, the contact position and area of ​​the cooling flange and the light source and the aluminum substrate and the aluminum casing directly affect the conduction and heat dissipation effects of the core temperature of the LED chip.

Finally, a lighting test


Under normal conditions, lighting designers who review samples require a lighting test. The color temperature, brightness, spot shape, beam angle, and lamp body temperature are all control details of the lighting designer. The first steps are theoretically and superficially assessed, and the final result comes down to the lighting test. Here you can very intuitively determine whether the luminaire matches the design effect.

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