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FAQ
- Led the desk lamp, electronic calendar watch how to adjust?
- This you can seek advice directly on taobao can sell this lamp customer service As I buy after light the lamp that shield an eye also is to have any questions just ask customer taobao sell desk lamp
- The led lamp charging more than 24 hours have what dangerous?????
- No perfect protection charging for a long time will make the battery "charge", charging battery short-lived. With perfect protection for a long time charging is no great harm.
- LED desk lamp, very bright, when buy later with more and more dark
- Not mass, domestic import LED with diode is also good, domestic doesn't (work well)
- How to maintenance of led desk lamp filled in no electricity
- It seems is the switching power supply, circuit board above and have a look. You understand the welding and the multimeter test? If you don't send repair shop
- The lights suddenly not at home this evening! Can't say no! There are several have a little light! Feeling superior and see what's going on! Light bought less than half a year! The following two pictures were taken by the night!
- If it is suddenly not very bright, usually because of its heart - LED drive power quality problems, the result of current is not enough. You can open it and have a look at the LED string, and power, to find a professional power supply company with power supply, diy connected the input and output line. If the trouble is returned to the manufacturer maintenance, this problem should be something for manufacturers. If it is used with the not so bright, like how did not suddenly don't bright, quality problem is LED lamp bead, light failure is too big. If a lamp is on there are a lot of small lights bead is unlikely this case maintenance, cost and the cost is too big, can only be changed directly. If it is only a high-power lamp bead and COB encapsulation of LED, don't bother you also can buy back to transfer the lamp bead.
- LED lamp stroboscopic serious, can you tell me the reason?
- Is zero, because ac 100 times per second of voltage is zero, if simply step-down rectifier circuit, or filter capacitance is too small, through the LED current is 100 times per second interrupt, LED is a semiconductor light emitting, reach nanosecond, response time and tungsten by electric heating filament reach the state of incandescent light emitting, filament cooling speed is about tens of milliseconds, you can turn on the LED desk lamp to see the inside of the circuit.
- Could you tell me how to repair have been flashing led desk lamp open,?
- Light flashing, if is to use the adapter, it is possible that the adapter, try out in later.
- Long card LED charging small desk lamp
- Question 1, exactly how long is the charge? Ha ha, write on the package for 8 hours to eight hours filling bai, without packing on the accurate online said. In my experience to tell you, 6-10 hours can, usually about filling. Actually charge much less charge will only affect the service life of lead sulfate in lamp battery, lead acid battery is made of memory effect, its charge number is directly related to its service life, so full of as well. But don't forget to pull out 24 hours, so there will be no safety accidents. 2, charge how many hours to charge, charge is not enough time to influence? Already answered above, will only affect the life. Influence is very big. Suggest you fill 8 hours as well.
