How many milliamperes of desk lamps are suitable for students?

Desk lamps suitable for students should have a certain light intensity, usually between 2500 and 3500 milliamperes, to ensure a clear field of vision when studying, which is more beneficial to eye health. When choosing a desk lamp, it is recommended to give priority to products within this range, because they can provide more sufficient light and help reduce eye fatigue.

In student dormitories, the safety of using electrical appliances is equally important. Although the specific power of electrical appliances allowed to be used is stipulated by the school, these regulations are all for the safety of students. Therefore, in daily life, we should consciously abide by these regulations, pay attention to electrical safety, and prevent accidents.

The following are several types of desk lamps suitable for students:

1. Incandescent lamps: Incandescent lamps have the advantages of no flicker, high color rendering, and soft light, but they also have the problems of high heat generation and easy to cause dry eyes.

2. Energy-saving lamps: Energy-saving lamps have the advantage of saving electricity, but their light source is unstable, there is a flicker problem, and the color temperature is high, which may be dazzling when used at close range.

3. Fluorescent lamp: Fluorescent lamp uses phosphor as the luminous medium, and trichromatic fluorescent lamp is often promoted as eye protection lamp. However, this is more of a marketing method of merchants. In fact, phosphor is just to blend colors, and its light quality is significantly different from that of ordinary monochrome fluorescent lamp.

4. Eye protection lamp: There are two main types of eye protection lamps on the market. High-frequency eye protection lamps reduce flicker by increasing the frequency, but this may cause faster eye fatigue; while DC eye protection lamps use DC technology to provide stable and non-fluctuating light, which fundamentally eliminates the flicker problem.

5. LED lamp: LED lamp has the characteristics of long life, environmental protection, and light close to natural light. Qualified LED lamps have pure light and high color rendering index, and due to the characteristics of light-emitting diodes, they must be powered by direct current, so they naturally have the advantages of no radiation and no flicker, and are real eye protection light sources.