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Zhongshan Lighting Technology Co., Ltd.
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LED light belt procurement should pay attention to matters
Edit:Zhongshan Lighting Technology Co., Ltd.   PublicDate:2018-04-13

LED Light BeltRefers to the LED assembly in the Ribbon of FPC (Flexible circuit board) or PCB board, because its product shape like a belt and named.

1, LED lamp belt circuit design

LED lamp circuit includes series circuit and parallel circuit, and parallel circuit.
A. The advantage of series circuit is that the current is constant, it is easier to control the driving current of the LED. The disadvantage is that if one of the LEDs is damaged, all LEDs will not be lit, but will not affect the life of other LEDs.
B. The advantage of parallel circuits is that any one led does not affect the use of other LEDs. The disadvantage is that if you do not add current resistance, any one led has damage, will cause other led to increase both ends of the current, will burn other LEDs. And because a single led drive voltage is very low, will cause most of the voltage does not work hard, for resources is also a waste.
C. Series-parallel circuit is the current LED lamp with a general circuit, because the use of several led in tandem together to form a group, and other groups in parallel. Can maximize the use of power supply voltage, reduce the loss of work. At the same time, the use of several led series, can ensure that the driving current of several LEDs is consistent, conducive to constant led current to ensure the life of LED. After the series of LED lamp group and other groups in parallel, can ensure that if a group of damage in the case, will not affect the normal use of other groups. Also, because each group has a current limiting resistor, the life of other groups will not be affected by the damage to one of the groups.

 

2, LED light with the number of beads per meter

Usually, the LED light with the number of light beads per meter is fixed. For example, 1210 is 60 lights, 5050 is 30 lights, special is 60 lights. If there are other special requirements, such as 50 lights per meter, this involves modifying the circuit. Because it is usually 3 led a group, if it is 50 lights, it will become a group of not enough, but if a group of two led, it will increase the resistance of the current limiting resistor, which will cause waste of resources. Therefore, in making special requirements of the custom LED light belt, we must pay attention to the number of light beads is 3 multiples, so that will not cause the waste of voltage resources.

3. The cutting position of LED light belt

In general, a clipping position is made for each group. But some customers will require a single led to do a cut position, which is unreasonable. Because then it is equivalent to a parallel circuit, for LED lamp belt life is no guarantee.
"Special attention"

A. If it is not a 220V light bar, do not use ac220v light bar directly;

B. Do not reverse the positive and negative;

C. Operators, please wear electrostatic ring operation.

Finally, the connection mode of the controller is expounded. LED race lights and RGB full lantern belt need to use the controller to achieve the change effect, and the control distance of each controller is not the same, generally speaking, the control distance of the simple controller is 10 to 15 meters, control distance of remote control is 15 to 20 meters, the longest can control to 30 meters distance. If the LED light belt connection distance is longer, and the controller can not control so long lamp belt, then need to use the power amplifier to carry on the separation.

In the actual operation process must pay attention to the LED lamp belt connection distance. In general, the 3528 series of LED light belt, its connection distance of up to 20 meters, 5050 series of LED light belt, the longest connection distance of 15 meters. If you exceed this connection distance, the LED light belt is very easy to heat, the use of the process will affect the life of LED lamp band. Therefore, the installation must be in accordance with the requirements of the manufacturers to install, should not let LED lights with over load operation.

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