Let you save money article: millet portable LED lamp dismantling

Price of 19.9 yuan millet portable LED lamp quality and technology in the end how to do today, a small series of dismantling a LED lamp for you to answer. It is understood that its power is 1.2W, the supply voltage of 5V. And through these two known conditions to calculate the continuous use of the mobile power supply time.

1.2w/5v=0.24a. 0.24a=240ma

In order to be able to prove that the actual work of the LED lamp small series specially purchased a small USB power meter.

Small series calculation of the working current is 0.24A this is only a theoretical value, in fact there are other electronic components and the resistance of the conductor so there is a certain error between the actual current and theoretical value.

Today Xiaobian to everyone to open the millet portable LED lights, into the LED lights to look at the structure and workmanship. Look from the appearance of LED lamp structure is not complicated, so the tool is relatively simple. LED lamp belongs to the overall design can not be restored after the demolition, it is not recommended to open. Small series is also a pure hand cheap, read the paste you save 19.9 yuan. Is not very cost-effective. No risk, do not easily imitate.

Portable LED lamp is casting one product, can not be restored after the demolition. This is also shown in the figure. Such a structure is conducive to beauty, but not conducive to maintenance. Also has a good waterproof, but when the water is really into the lamp body is difficult to flow out, so that the internal electronic components have a significant impact on the life. So don't let the water vapor in the lamp. Careless use of water in a timely manner to pull out, dry with a paper towel to avoid liquid immersion.

Remove the scrub mask in front of the LED can see the lamp and some electronic components, using frosted mask benefits is to avoid direct sunlight, two adjacent lamp light reflected by will make the LED lamp light more integration, will not have the shadow between each lamp. The light that enters the eye after the refraction is softer and less dazzling.

At first I thought that the millet LED lamp uses the universal curved design, and now we can't solve the problem of universal bending. It means that it can never be restored. So curiosity comes at a price.

After the LED lamp's clothes were ripped off, the bent part was a 14# high toughness wire. This wire is very soft and easy to shape, will not rebound. 0.5 tinned copper wire with good quality. Such a conductor can withstand 3A of the current so the power cord of the 1.2W LED lamp is fully adequate. You can rest assured that the use of. After the opening of millet LED lamp is not universal bending is taken into account the mechanical structure and mechanical strength needs.

Circuit board design is very simple, orderly line, exquisite workmanship. Each LED lamp beads are very large, so that there is a higher lumen.

See here, Xiao Bian stunned, the lines between the plate and the conducting plates instead of using thermal grease conduction, but directly on the metal plate coated with the insulating layer after printing line. The heat transfer efficiency is greatly improved.

In order to take into account the low thermal conductivity of plastic, plastic casting prior to the addition of a metal box to allow faster heat transfer to the back of the heat sink. Accelerate the internal and external heat exchange, including the extension of the LED lamp and other electronic components of the service life.

LED lamp power supply wire material is also very particular about, although the color of the wire is white, white wire will think of the first aluminum wire, wire. Such a white wire is a copper tin which can be more durable to protect the copper wire to prevent oxidation of copper. Such a thick and high quality copper wire is to reduce the resistance to reduce the loss of electricity, so that more electricity into light, not heat.

After measurement, a LED lamp series by way of link. Voltage also rose from 5V to 18V. Careful friends found a small series of pen placement is not a normal series position, but indeed, Xiao Bian also began wondering, after the actual measurement on a lamp bottom and the other five is placed against the light bead. I don't understand.

In short: Science and technology progress, millet in progress. Science and technology has brought a variety of new products to replace the old ideas, millet let technology faster and more harmonious into our lives. I hope this is just the beginning, I hope because of more and better technology products faster and better into our lives. To disassemble the small series is just a start, after the small will bring you more Chaiji plus DIY post, let us a deeper understanding of the work of internal structure of millet products, let us more confidence in the easy life.

For more information about LED, please click on China LED network or pay attention to WeChat public account (cnledw2013).