Learn to DIY personalized LED lights

Today mainly introduces the working principle of LED lights and common LED lights, after understanding DIY own personality LED without pressure. Don’t skip ahead there’s dry stuff down there.

One: LED driver

When the LED light source is added to both ends of the forward voltage will be luminous, and LED can only be supplied by dc, DC, DC important things say three times. So there was a magical thing: LED drive power.

LED driver diagram

1. Drive the input/output end

The input end of the driving power supply is directly 220V AC, the output end is directly connected with the LED light source board, and the LED has positive (+) negative (-) points, the positive (+) of the driving output is connected with the positive (+) of the light source board. The negative (-) connects the negative (-).

2. Power range

According to the power of the LED lamp to match the suitable drive, as long as the power of the light source within the range of the drive can be basically used, for example, a 5W light source can be driven by 4-7W.

3. Output current

The influence of the brightness of the same LED lamp is proportional (it must be within the rated current range of the light source), for example, a 3W light source, with 3W300MA drive than with 3W150MA drive brightness is better, but the current is too high will lead to overload operation of the LED lamp, light decline will be faster, the life of the lamp also has a great impact. The actual current of conventional drive is 220-280mA.

4. Output voltage

Most drives automatically adjust to the power of the LED light source.

Two: the core components of LED lights

If you have to assemble a lamp by yourself, the core components

1. A light plate

2. Drive power supply matching the light source plate

LED driver and light source

PS: The light above is already on

3. A radiator, the common material of radiator is aluminum, low cost, good thermal conductivity. Most OF the LED chip working limit temperature is 110 degrees Celsius, the higher the LED lamp working temperature, the lower the light efficiency, the faster the light decay, the shorter the life, as far as possible to reduce the LED chip working temperature, if not with the help of the radiator heat dispersion export, will soon die.

4. One tube of thermal grease for seamless connection of light source board and radiator.

LED light radiator

With these three large pieces, an LED light can work normally. Next, you can open your imagination to make your favorite lamps and lanterns. Welcome to leave a message in the comment area and I will answer any questions.

PS: There are N kinds of light source, and there are N kinds of radiator styles (can be a piece of waste aluminum, scrap iron skin, etc.). According to different lamps and lanterns, there will be different light source and radiator. Here only the working principle of LED lamp.

Junction: the driving power will convert ac to DC and then load it to THE LED light source board to realize lighting. With the help of the radiator, the heat generated by the tape lighting manufacturer will be dispersed to make it work normally.

Three: common LED types

The core part of most of the lamps on the market is composed of light source plate, driver, radiator block, drive has built-in and external points, whether external or built-in its working principle is the same.

Drive built-in: common in LED bulbs, tubes, modules, tubes/spotlights, track lights, etc.

LED modules are often used for circular ceiling lights

Drive external: common in the living room, bedroom lamp of the original light source.

Strip patch light source

Four: constant pressure lamps and lanterns

Some lamps are specific voltage, common is 12V, 24V, constant voltage lamp is used in a specific environment to achieve the purpose of electricity safety, common 12V lamp is used in the restaurant refrigerator, jewelry cabinet, mobile phone counter, advertising light box, stall, prison and other environments. 24V lights are mostly used outdoors for example: wall washing lights, underwater lights, buried lights, tree lights, fountain lights and so on, regardless of 12V/24V lights have a common character:

1. They all use parallel circuit, parallel circuit, parallel circuit, important things say three times, (e.g. : to link two 12V light bars, the light bar must be + connected +, – connected -).

The 12 v LED lights

2. They all need to use a specific drive power supply, the industry term “switching power supply”

Switching power supply diagram

Note:

1 L/N is the input terminal is connected with 220V regardless of positive and negative com or V- LED lamp negative, V+ is connected with LED lamp positive, G is ground wire (no ground wire is not connected)

2 switching power supply points waterproof or not waterproof, according to their needs to choose

3 general switching power supply of the maximum power of 400W, other 300W/250W and so on

Five: drive light source integrated

High pressure patch light source

Commonly known as “high pressure patch”, adhere to a principle: LED is only for DIRECT current, high voltage patch is very well explained, is the drive integrated in the light source board, this practice is mostly to save money, save money, save important things to say three times, some brands in the use of this scheme, but relatively secure, because the light source board direct 220V, If the quality of the aluminum substrate is not good or the welding process is not fine is easy to lead to electricity leakage injury, this light source is mostly used in crystal living room lights, cheap LED down lights. Personally, I don’t agree with this kind of practice, but as long as it is cheap, there is a market. Most of these lights have a common “stroboscope” (turn on the phone camera to the light source, you will have a magical discovery) 85% of the lights have stroboscope, because you can’t insert video, you can try it at home.

For more products please click: led strip light manufacturers