The working principle of led light strip is that each section is a unit, each unit has a fixed number of light-emitting diodes and distributed current limiting resistors, which should be cut off according to the unit when cutting, otherwise this section will not light up. Each unit is connected in parallel to bear power supply voltage, including DC 200V, 24V, 12V, 5V, etc.

The connection between the power supply and the light strip can be divided into positive and negative poles. Reverse one light.


1. Indoor installation: When LED light strips are used for indoor decoration, they do not have to withstand wind and rain, so the installation is very simple. Take the LED light strip produced by Guanghong Electronics as an example. Each LED light strip has a self adhesive 3M double-sided adhesive tape on the back. During installation, you can directly remove the sticker on the surface of the 3M double-sided adhesive tape, then fix the light strip at the place where it needs to be installed, and press it flat with your hand. As for some places where corners are needed or long, what should we do? It is very simple. The LED light strip is a circuit structure composed of three LEDs in series and parallel. Every three LEDs can be cut off and used separately.


2. Outdoor installation. Where cutting and connection are required, the method is the same as that for indoor installation, except that waterproof glue is additionally provided to consolidate the waterproof effect of the connection point.


3. Power supply connection method: The LED light strip generally has a DC 12V voltage, so it needs to use the switching power supply. The power supply size depends on the power and connection length of the LED light strip. If you do not want each LED light strip to be controlled by a power supply, you can purchase a high power switching power supply as the main power supply, and then connect all the input power supplies of LED light strips in parallel (if the wire size is not enough, it can be extended separately), and uniformly use the main switching power supply for power supply. The advantage of this is that it can be centrally controlled. The inconvenient place is that it is not possible to achieve the lighting effect and switch control of a single LED light strip.


The specific method can be measured by yourself.