How to cut and connect the LED strip
How to cut or connect the LED strip
This article tells how to properly cut the LED strip. Depending on the voltage, variety, model of luminous strip may require its own way of cutting. Special signs and labels will help in this, but even a strip without markings can be easily cut into pieces of the required size.
To date, the tape LED type is a printed circuit board, which is reconnected to a thin base of elastic type. On one side of this tape are resistors limiting type, which allows you to connect this product to the power supply or other device. It is also worth noting that the product has contacts, to which, if necessary, you can solder the wires connectivity. If you look closely, you can see that through the three different elements there are dashes, which are located across the product. This is the mark on which it is possible to separate the tape.
There are also tapes that are samoklekami and using them even a high school student can do the installation. In this case, the installation does not need screws or any other reinforcing materials, it can be firmly fixed due to its base.
The device LED tape
To date, the tape LED type is a printed circuit board, which is reconnected to a thin base of elastic type. On one side of this tape are resistors of the limiting type, which allows you to connect this product to a power source or other instrument. It is also worth noting that the product has contacts, to which, if necessary, you can solder the wires connectivity. If you look closely, you will notice that through the three different elements there are dashes, which are located across the product. This is the mark on which it is possible to separate the tape.
There are such tapes, which are self-adhesive and with their help even a high school student can do installation. In this case, the installation does not need screws or any other reinforcing materials, it can be firmly fixed due to its base.
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How to connect the cut LED strip?
If you have two pieces, you can connect them together without much effort. There are two ways of splicing led lighting:
In the first case, you can connect the individual segments with each other through additional wires or by soldering directly to each of the contact pads. Consider the wireless splicing method.
Before you put rosin on the contacts, you should make sure that they are not oxidized.
Apply rosin to contact pads that have not been oxidized. In this case, treatment should be amenable to both the site on which the LEDs are located, and the surface under the protective film on the back of the strip. For quality splices, the thickness of solder should be at least 3 mm on each section of the backlight.
The total length of the spliced ribbon must not exceed 5 meters.
The incoming voltage is designed by the manufacturer only for limited backlighting. Its value will be reduced by the formation of printed tracks of greater length to the end of the tape.
This will cause the LEDs at the end of the backlight to burn less brightly than those closer to the power source.
The simplest connection method is to use a special connector. To connect an additional segment should perform the following algorithm:
General rules for connection
To perform a proper connection of the LED strip is desirable to get acquainted with its technical indicators before buying. Tapes differ in the number of diodes per meter of the product.
This parameter is necessarily specified in the technical specifications on the package. It directly affects the quality of lighting and the required power. LED elements on the tape can be arranged in one row or in two. In addition, there is a difference in their protection. lacquer or silicone coating, or without any protection.
The required voltage strip receives from the power supply unit voltage of 12 or 24 volts. When you purchase a device must clarify the consumed voltage and buy a suitable power supply, which will connect the LED strip to 220 V. The following is a discussion of the main points that require special attention.
There are a total of four key points to consider:
This problem is solved quite simply. measure the extent of the perimeter to be covered, where you plan to install the strip. In the case of a longer length from the standard length of the roll of 5 meters, we need to add an allowance for splicing. Cutting the ribbon for extension can be done at certain segments. Their location depends on the number of diodes in the device.
In contrast to the household electrical devices and classical lamps, the installation of LED strip should be made with observance of polarity, since it is a semiconductor device. Fortunately, if you switch to the wrong poles of the power supply, the tape will not fail. In this case, it simply will not turn on and will need to change the poles on the power supply device.
Quite often, the length of the standard coil is excessive and have to cut off from the tape required piece. In order to connect the LED strip with a length of less than 5 meters to the power supply unit, the workpiece is cut on the already mentioned risks. As a rule, they are placed every 3 fixtures. In the vast majority of tapes, it is three in a block, grouping light parts in parallel bundles. If you cut the tape in another place, it will work, but some diodes, in which the circuit was closed, will not function.
Soldering is a fairly common way to connect several sections of tape. A close look at the marked lines for cutting, you can find special contact pads. Before connection, they are cleaned and processed by tinning.
Then made the connection of segments by soldering the wiring. For these purposes, a section not exceeding 2 millimeters is recommended. It is worth noting that there are models of tape that can be connected without soldering. by switching with special connectors.
Conclusions and useful videos
Instruction from the professionals. all by the book:
Soldering LED strip. clearly and correctly:
With LED lighting installed the appearance of the room is noticeably changed. It is excellent as evening lighting or simply as a decorative frame for the interior.
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How to cut a regular 12 volt LED strip?
LED light strips belong to the so-called devices led. At its base this system has only an electrical circuit. 12V tape is not only flexible, but also elastic. It, like other analogues, consists of individual segments, which include, as a rule, three LEDs. Verify this fact yourself, you can, by removing a portion of the tape and look closely. Along the backlight between the individual segments is the distribution of voltage on the strip.
Due to the fact that the coating has a thin layer, the tape can be cut, clearly controlling where there is a line for the trimmer. This is done simply by using a box cutter. If you, cutting a product of this type, break the rules and do not do it on the right line, it will lead to the fact that one of the parties will stop its work.
When producing these belts, the manufacturer himself precisely marks out the dotted line where the cut must be made.
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The basics of installing LED strips
Taking on the installation of the Duralite, you need to remember the basic rules and features of its attachment:
- There is an adhesive layer on the back side, but it is possible to glue the twisted light strip only once. To keep the tape strong, the surface must be dry, flat and degreased with solvent.
- The board does not easily withstand bends. The maximum bending radius. up to 5 cm.
- The board can only be cut at the marks. usually every 3 diodes.
- Connect the Duralite by soldering or with connectors. Soldering time is 1 sec. The soldering iron is heated to a temperature not exceeding 260 degrees.
LED lighting is mounted in the kitchen, in niches, combined with a suspended ceiling or plasterboard structures.
How to cut a colored (RGB) LED strip?
The RGB strip has a slightly different separation process. The fixture is also divided into parts, but each part has several contact pads.
Under this condition, it is extremely important that the color channel, which was cut off, connects to the same-named site, so that the color that is conceived burns. Each color has its own immediate parameters, and if they are not met, it can have very negative consequences.
Soldering iron is the main tool for the radio amateur in his practice. They call people who like to tinker with hardware “born with a soldering iron” for a reason.
We recommend unplugging the soldering iron every 15-20 minutes. Especially with some machines overheating makes the tin no longer stick to the tip and it becomes hard to solder anything.
You can install a power controller (dimmer):
Before soldering, it is advisable to read the “Soldering mistakes” chapter.
How to solder between each other
- Make the contacts of one piece of tape, then the other. Be careful not to overheat them!
- Cut the wires (three centimeters is sufficient) and solder the pieces together.
- Pull the wires toward you to check the quality of soldering.
- Wrap with electrical tape or put on a heat shrink and fix it with a hair dryer.
If the cut of the tape is made by mistake or for other reasons in the wrong place, you can solder (but this is a rough job). We do it in this order:
- Strip the live wires so that they are visible.
- Carefully apply solder to them.
- Two methods. butt or wire bonding.
- Check if the wires are soldered firmly. Don’t pull them, but pull them toward you a little.
- Insulate with heat shrink or electrical tape.
Soldering silicone-coated tape
Soldering the LED strip is complicated by the silicone protective casing. Cut the protection with a sharp knife. We recommend buying silicone adhesive: when you solder the wires, fill in the exposed area with the adhesive.
Soldering wires at an angle
Angled soldered wires often become tougher when soaked in flux and solder. Because if it is necessary to connect one part of the tape to the other at an angle, it is better to bend the wires beforehand. It is also necessary to pick up the wires of different lengths, so that they do not interfere with each other, being at an angle.
Hide wires and contacts. with duct tape or heat shrink. A good method is to fill with silicone those places that are at risk of electric shock or, for example, water ingress.