Note that when you select a thermostat soldering iron, soldering temperature of 260 ℃, soldering time and the first contact pads LED not exceed 3S (note electric iron welding must be grounded box lights, the operator should wear a wrist strap or blow-fan ) Four high-power LED driver circuit due to follow the diode voltage characteristic curve light box led light bar, if the driving voltage floating the corresponding drive current drift is large, easy to damage the lamp beads light box led light bar, it is recommended that the use of more stable constant current drive power or IC, rather than using constant drive power or IC. High Power LED generally refers to more than lW LED light source. Compared with the previous three generations of light, it has the following advantages: (1) environmental protection, pollution - in modern society, this is the most important one. LED solid-state lighting, mercury and other heavy metals, no pollution, no adverse effects on the human body. (2) high light efficiency - when tungsten halogen lamp color temperature of 3200 K, luminous efficiency at 24 lm / W or so; the high color rendering of gas discharge lamp and three-color fluorescent light effect does not exceed 100 lm / W; high color ~ I . ED sources, brand white LED luminous efficiency more than 100 lm / W. 400 nm ~ 700 I1I cricket and other energy white light strip rolling light boxes, theoretical luminous efficiency is 241 lm / W. In the near future, to meet the film, stage needs (mainly color rendering index and color temperature) of the LED light source efficiency may well exceed i 00 lm / W. (3) Long life - film, stage common halogen bulb life of only 200 h ~ 300 h; Computer Light metal halide lamps typically a few hundred / J \ 13, J; trichromatic fluorescent lamp life of up to 8 000 ~ 10 000 h; and the brand's high-power LED light source in the luminaire's lifetime, more than 10 000 h. With lighting improvements and drive power cooling conditions in the near future, its life may reach 30 000h ~ 50 000h. Box lights, high beam illumination, scrolling light box light bar by far Lighting Technology Co., Ltd. Box lights, high beam illumination, scrolling light box light bar is far Lighting Technology Co., Ltd. (www.ygzmkj.com) (www.ygzmkj.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, Contact: Manager Wu.