In LED lamps and lanterns of lamps and lanterns can't often happen in the operation of the phenomenon of normal
light, more often than not this time because of the LED lamps and lanterns lamp bead has a problem, need to make a simple judgment in the LED lamps and lanterns see if lamp bead has a problem, so how to determine whether the lamp bead has a problem?
'The problems caused by power supply not normal: (
1)
Check the power of the power supply to have normal work, designator light had lit up, if there is no light up, please check the power supply have good connection;
（
2)
Check to see if the lamp bead wire with power supply anode connection is good, have reversed phase, if you have the above problem, please correct connection.
'LED lamp bead to the requirement of voltage: nominal 3 v LED lamp bead, in fact, different color also have different requirements for electric current, yellow require minimum current, in turn, is red, green, white and blue.
The current is too large, can make the wick burned.
Use 2.
4 v rechargeable batteries, yellow easy burning, because even if the voltage is not big, but the current is too large, will still be burnt at random.
At the time of use button batteries, because although button battery voltage is 3 v, but because the button battery discharge current is very small, so the 3 v LED lamp bead will not be burned.
Therefore, in the use of LED lamp bead, should choose the appropriate power supply, pay attention to the voltage, and current.
Selection of power supply, if do not conform to the requirements of the rating of the LED lamp bead, the need to improve the circuit, common with resistance!
'' how braided LED lamp bead light color: under the condition of no electricity, if to choose convenient when buy, Suggestions for a 3 v button battery, in with the batteries when choosing what easy to check out the LED light.
'The cause of the high power LED lamp bead burn: (
1)
Up and down two filament, we in the industry is called gold, pure gold, be conductive to use, two positive and two negative, really good product will have the fifth wire, welding on the zener, the protective (
2)
Shorter filament is already very clear tell you, you the lamp has been burned large current, equivalent circuit (
3)
1 w high power drive current about 350 ma, the working voltage in 3.
2 -
3.
Between 6 v, please it is important to note that when using large current will be burning lamp (
4)
Typically three 1 w lights aluminum plates are driven around 12 v, there are few direct use 220 v, the less you and see if it is a constant current source or a less driving power supply 12 v?
'The cause of the LED lamp bead yellow: yellow LED WaiFeng glue reason mostly caused by epoxy resin and curing agent does not match, but also can't rule out WaiFeng glue baking time is too long.
Solution: buy complete WaiFeng adhesive and curing agent, such as Shanghai fine chemical model 800 or 2339 glue will not appear the following situation, the other pays attention to the production control, strictly according to the work instruction operation, to avoid the lack of baking time is too long, or, the situation is very good control.
'LED lamp bead leakage reason: the machine equipment off ground, staff did not wear electrostatic ring (
Must be have a rope)
。
Caused by improper electrostatic protection.
And encapsulation process, welding wire welding partial PAD, the potential quality problem is the chip itself.
'' LED lamp bead should be is a question of capacity, perceptual load: in fact, neither, LED lamp bead is a diode, it needs a positive conduction voltage can work, usually 2 -
3.
5 v, in addition, the current size can control the brightness of the LED lamp bead.
Also said LED lamp bead just to transform electricity to light energy.
'' LED lamp bead light failure reason: (
1)
Iron stent poor thermal conductivity.
（
2)
Yellowing epoxy resin.
（
3)
Chip and contact close enough.
（
4)
Chip attenuation.
When consumer is buying the LED lamps and lanterns is about to consider the problems that occur after use, and then to choose and buy, had better be to choose well-known LED manufacturers, such as national energy conservation certification of products, quality is guaranteed!
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