Indoor installation:
When the LED strip is used for interior decoration, installation is very simple because it does not have to withstand wind and rain. Taking LED light strips produced by BHP Billiton as an example, a self-adhesive 3M double-sided adhesive tape is attached to the back of each LED light strip. The sticker on the surface of 3M double-sided adhesive tape can be directly detached during installation, and then the light strip is fixed to be installed. Place, hand smooth enough. As for the need for corners or long places, what should I do? It is very simple, the LED light strip is a circuit structure which is composed of 3 LEDs as a series and parallel connection, and each 3 LEDs can be cut and used alone.
Outdoor installation:
Outdoor installation will suffer from wind and rain. If it is fixed with 3M glue, it will cause 3M adhesiveness to decrease for a long time, which will cause the LED light to fall off. Therefore, the outdoor installation often adopts a fixed slot method, which requires cutting and connection. The place and method are the same as the indoor installation, but only need to be equipped with waterproof glue to consolidate the waterproof effect of the connection point.
Power connection method:
The LED lamp has a DC voltage of 12V, so it needs to be powered by a switching power supply. The size of the power supply depends on the power of the LED lamp and the connection length. If you do not want to use a power supply to control each LED strip, you can purchase a switching power supply with a relatively high power as the main power supply, and then connect all LED lights in parallel with the input power (if the wire size is not enough, you can extend it). Unified power supply from the main switching power supply. The advantage of this is that it can be controlled in a centralized manner. Inconvenient places cannot achieve the lighting effect and switch control of a single LED light strip. Which method can be used by oneself can be measured.
pay attention:
a. If it is not a 220V light bar, do not use AC220V to light the light bar b. Do not connect negative and positive poles. Workers should wear an electrostatic ring controller connection:
The LED Marquee and RGB full-color lamp need to use the controller to achieve the changing effect, and the control distance of each controller is not the same. In general, the simple controller has a control distance of 10 to 15 meters, remote control controller The control distance is 15 to 20 meters and can be controlled up to 30 meters. If the LED light strips have a long connection distance and the controller cannot control the length of the light strips, then a power amplifier is needed for tapping.
Pay attention to the connection distance of LED strips:
In general, the 3528 series LED strips have a connection distance of up to 20 meters. The 5050 series LED strips have a maximum connection distance of 15 meters. If this connection distance is exceeded, the LED strips are prone to heat, and the lifetime of the LED strips is affected during use. Therefore, when installing, it must be installed according to the requirements of the manufacturer. Do not let the LED lamp run with overload.
LED lights with purchase considerations There are many customer demand LED lights are not conventional specifications, they need to be customized. However, because they are not familiar with some of the technical parameters of the LED light strips, there are many requirements that are obviously not in accordance with the technical requirements and even if they are used, their use will be affected. Here specifically talk about the LED lights with three special special considerations for the purchase of customer reference:
1, LED lamp circuit design:
LED lights with the circuit including series circuits and parallel circuits, there is a series and parallel circuits.
a. The advantage of the series circuit is that the current is constant and it is easier to control the LED drive current. The disadvantage is that if one of the LEDs is damaged, all the LEDs will be off, but it will not affect the lifetime of other LEDs.
b. The advantage of the parallel circuit is that any LED failure will not affect the use of other LEDs. The disadvantage is that if the current limiting resistor is not added, any one of the LED's will be damaged, which will cause the other LED's current to increase at both ends and will burn other LEDs. And because the driving voltage of a single LED is very low, it will cause most of the voltage to do useless work, and it is also a waste of resources.
c. The series-parallel circuit is currently a general-purpose circuit of the LED lamp, because several LEDs are connected in series to form one group and then parallel to other groups. It can maximize the use of power supply voltage and reduce the useless power loss. At the same time, using several LEDs in series can ensure that the drive currents of these LEDs are the same, which is conducive to the current of the constant LEDs to ensure the service life of the LEDs. The series-connected LED lamp group is then connected in parallel with other groups to ensure that if one group is damaged, it will not affect the normal use of other groups. At the same time, since each group has a current limiting resistor, it will not affect the service life of other groups because of the damage of one group.
2, LED lamp with the number of beads per meter:
Normally, the number of LED beads per meter is fixed. For example, 1210 is 60 lamps, 5050 is 30 lamps, and 60 lamps are special. If there are other special requirements, such as 50 lights per meter, this involves modifying the circuit. Because it is usually a set of 3 LEDs, if it is 50 lights, it will become a group of numbers is not enough, but if it becomes a group of two LEDs, it will increase the resistance of the current limiting resistor, which will cause waste of resources . Therefore, when you make LED lights with special requirements, you must pay attention to the number of lamp beads is a multiple of 3, so as not to waste voltage resources.
3, LED light with cutting position:
In general, it is a cut position for each group. However, it is not reasonable for some customers to request a single LED to make a cut position. In that case, it is equivalent to a parallel circuit, and there is no guarantee for the service life of the LED lamp.
