Led how should I choose the light belt?
Bending, the lamp strip on the finger, normal is also the normal light, the folded into this lamp or camber resistance weldingSaid so much, hands are tired, I hope to give a high praise
Look at work, beads is generally arranged lengthwise, solder joints in the light belt on both sides, the spot is full, shiny, poor on the contrary, if the solder joint black, said this is the stock for a long time, especially at the end, it is easy to weld, false welding, non-performing rate is very highSee the lamp, DC voltage regulator voltage to about 6-8V, each lamp light, but the light is relatively uniform, good consistency, poor light is a few bright points a few dark spots, especially the 5050 beads, a lamp which has 3 chips, each chip is normal if there is no light, light, or uneven brightness is defective
There are many kinds of lights: LED flexible band, LED hard light strip, LED rainbow tube, can be called "light strip" or "light belt", I will talk about flexible lamp belt selection method:Look at this lamp with FPC, is also the circuit board, now a lot of businesses in order to save costs, the single copper has to do such a lamp with a long time, severe fever, LED life, is only a single panel you can see the back line (no LED this surface is smooth, the color is uniform) 2, double sided board have a line, a line of local color is deep, hands feel thick
