With the continuous improvement of technology, LED light bulbs have spread to every family of ours, and there are amazing sales every year.
There are small personal workshops and well-known large manufacturers in the country that produce LED light bulbs.
The quality of the products varies greatly. It is difficult to distinguish the quality of products, which makes it very difficult for users to choose products.
So how to judge the quality of LED bulbs? Next, this editor will briefly introduce and popularize the knowledge and skills in this area, hoping to be helpful to everyone.
Tools/Materials
- camera phone or digital camera
- One regular manufacturer's LED bulb and one cheap LED bulb
Method/Step
- Look at the appearance of the light bulb first. Good light bulbs are fine and smooth in workmanship, without burrs on the edges, and must have the trademark and anti-counterfeiting of regular manufacturers.
- Looking at the material of the lampshade, the lampshade of a good bulb is bright and shiny, with a natural arc, while the lampshade of a low-quality bulb is obviously cloudy and has poor light transmittance.
- Secondly, look at the heat dissipation part of the light bulb. Most of the heat sinks of good light bulbs are high-grade aluminum heat sinks, which have a good heat dissipation effect and prolong the service life.
- Most of the heat sinks of low-quality light bulbs are made of plastic or low-grade aluminum with too many impurities, and the appearance is rough. The heat dissipation is not good.
- .A good LED bulb has enough wattage and enough brightness.
- After the initial inspection of the appearance, it is necessary to test whether the light source of the bulb is good or not.
- Everyone knows that good LED light sources protect the eyes and prevent flickering. Fatigue is also prone to short-sightedness, and the lights are also prone to damage. Let me take you to test it.
- First take out a light bulb produced by a regular manufacturer and light it up, then take out your mobile phone or digital camera and set it to take pictures, and use the camera to face the lighted light bulb.
- If it is clearly displayed on the screen without stripes or shaking, it means this kind of LED light Using a constant current power supply, the quality of the lamp is much better, the life is long, and it will not cause harm to human eyes Halfords Discount Code NHS.
- Take out another low-priced light bulb without any logo and operate it in the same way, there will be one black and one white fluctuating strip on the screen of the mobile phone.
- That is because the driving power of this LED light bulb is non-isolated, and the current is not constant. , so there will be stroboscopic, which is very harmful to the eyes.
Precautions
- Don’t be greedy for cheap when choosing light bulbs, especially if there are children at home. The quality of the light source has a great impact on the development of children’s eyes
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Simple Repair LED Bulbs
- Now LED bulbs are energy-saving, long life, and high brightness, and are welcomed by more and more people to popularize household and commercial lighting.
- Because LED bulbs generate a lot of heat, aluminum parts must be used to dissipate heat in the manufacture of LED bulbs, so the price of LED bulbs is still high. More expensive than ordinary energy-saving light bulbs.
- Once the LED bulb is broken, it is a pity to throw it away. LED bulbs are mainly made of aluminum and have a relatively high maintenance value.
- After they are broken, they can be repaired by themselves. There is no need to throw them away. Here I will briefly introduce how to repair LED bulbs.
- bad led bulb
- LED light source
- LED drive power
- Soldering iron + solder
- Insulating tape
Detail
- Confirm the bad LED bulb unscrew the lampshade
- Unscrew the lampshade
- Check whether the lamp bead is broken or not. Generally speaking, 98% of the lamp beads are broken, there will be a black spot, and the other 2% is soaked in water.
- The LED bulb in my hand is broken 2 A lamp bead is clearly visible in the picture. If your LED bulb is not this kind of lamp beads, you can refer to my other experience
- Use a soldering iron to solder off 2 small wires, and then unscrew the lamp head (the part between the aluminum part and the plastic is unscrewed)
- Loose thread
- Easily remove the broken light source board
- Because the thermal conductivity of the heat-conducting silicone grease is not so good after the lamp has been used for a long time, you can add some silicone grease if possible.
- Replace with a new light source board and tighten the wire
- The probability of the LED bulb breaking the light source (lamp bead) is relatively high, accounting for 80% of the possibility.
- But generally the LED bulb that has been used for more than 2 years is broken, it is best to replace the light source and the driving power supply together during maintenance, because the driving power supply It also has a lifespan.
- If the light source is broken and only the light source is replaced, the drive power will be broken soon next time, and it is also possible that the new light source does not match the old drive power.
- Therefore, it is best to change the light source and drive power together, and When you buy it, you must buy it as a set.
- You all know where to buy it, so I won’t talk about it. If there is something you don’t understand, you can chat with me privately. Amazon NHS Discount Code at NHS Discount Code.
- Remove the old drive power insulation tape
- Solder off the wires at the input end, be sure to leave the wires, otherwise you will not be able to connect to the new drive power for a while
- Solder the new drive power supply
- Wrap it with insulating tape, be sure to wrap it well, the input terminal is 220V voltage, pay attention to safety
- Pass through the lamp body, screw the lamp head, and prepare the welding wire
- Welding wire, red wire positive "+", white wire negative "-" and some manufacturers have red wire and black wire, no matter what, remember that the red wire is positive "+"
- Screw the lampshade back on and you're done. If you don’t want to replace any accessories to repair LED bulbs, you can also refer to my experience in repairing LED bulbs without changing accessories!
- Put the lamp on, switch on and test it, and a new bulb will come out. This is a 5W LED bulb. It only costs about 5 yuan to replace the accessory light source and drive power supply.
- A new 5W LED bulb usually sells for 15-20 yuan. about. Doing it yourself is still very fulfilling, and friends who don’t understand can ask me at any time