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• 232018-07

  The Last Time of Incandescent Lamp

  Primary school students around the world have always known from textbooks that the light was invented by Edison, but in 1884, Swan lights lit up the private houses of the British House of Commons, the British Museum and celebrities on the British Isle. In order to invent the incandescent lamp, Swan and Edison almost fought a lawsuit, eventually settled out of court and formed a joint company.
• 232018-07

  Simple Identification of LED Dead Lights and Solutions

  1. Simple identification of virtual soldering dead lights is a relatively simple but quite effective method of identifying LED dead lights is to heat the lamp that does not turn on. We heated the LED lead of some unlit LED lamp to 200-300 C, removed the source of fire, connected the LED with positive and negative poles by 3-volt button battery. If the LED lamp can be lit at this time, but with the temperature of the lead decreases, the LED lamp changes from bright to unlit, which proves that the
• 232018-07

  Life Analysis of LED Driving Power Supply

  The lifetime of the driving power supply depends on the lifetime of the electrolytic capacitor of the power supply. The working temperature of capacitor in harsh environment will be higher than 95 C. Some people have also proposed whether ceramic or solid capacitors can be used, but the current capacitor technology can not be made into high voltage and large capacity. Of course, a good saddle needs to be equipped with a good horse, using long-life capacitors does not necessarily guarantee the li