The distinction between the positive core and the loose core of the infrared lamp makes the discrimination of the quality of the infrared lamp very important. According to our experience in producing infrared lamps for many years, we will discuss some simple identification methods here for your reference.
First, the distinction between positive and negative cores The use of positive or negative cores determines the quality of infrared lamps. The price between the two is also very poor, and even a difference of more than five times. This is also the price of infrared lamps in the market. An important reason. The camera is most sensitive to the luminescence spectrum at 850 nanometers of the lamp, that is, a red burst infrared tube, and the infrared tube of this band is also the most expensive. Remove the lamp plate of the infrared lamp and find an adjustable power supply. In the dark environment, the output voltage of the regulated power supply is first adjusted to the rated working voltage of the infrared lamp, and the infrared lamp is connected. At this time, the infrared lamp works normally, and then the voltage is gradually lowered until the lamp tube goes out and the lamp is turned off. The degree of luminosity is the same. If all the lamps on the lamp panel are illuminated during this process, then the lamp is using a positive core; if there are any lamps that are slightly bright and the lamps are slightly darker, then the quality of the wick makes people doubtful. . There is also a method of measurement. The operating voltage of each lamp is measured while the infrared lamp is operating normally. Most LED infrared lamps currently on the market use low-power lamps. The chips are mostly 12MIL or 14MIL [mil = 0.0254 mm]. The normal working voltage of each lamp is about 1.5V. .
With a digital multimeter, range switch to 2V file, measuring the working voltage of each lamp, if the positive core tube, the error value of the working voltage of each lamp within 0.03V, if greater than this value, especially the general comparison When it was large, it indicated that the lamps were not positive. This method is also suitable for 940 nm infrared lamps.
The advantages of a positive core tube are that it works stably. When it is new, it is as new as it is. It is as old as it used to be. After working for 35 years, the lamps on the lamp panel are seen again. They are very consistent. If the suspicion is low, proper adjustment of the operating current can make it rejuvenate. Dispersing the lamp is not the same. After six months of operation, some lamps on the lamp board are dark and there is no failure within one year. Even if you replace the bad pipe, it will still fail after a long time, because the overall quality is too bad.
Second, the size of the wick chip The normal method is to use chemical solvents to measure the size of the wick after the colloid dissolved. But for most people, even if you can dissolve the colloids, you cannot measure accurate data because we don't have a very accurate measurement tool [1 mil = 0.0254 mm]. It is usually to see the operating current. In general, the maximum operating current for a 12 MIL lamp is no more than 60 mA, and no more than 70 mA for 14 MIL. However, due to the market and other factors, some of the all-in-one 12MIL lamps have 80 mA of operating current. This method is not sure. But we can provide a reference, that is, the operating current of the chip may be large, but the current is too short life. For example, the operating current of a lamp of 12 MIL is 80 mA, and its lifetime is at most 2 years. You know this, you can have more plates on hand. Anyway, if you buy a lamp for one time, you have to make a profit for sales and engineering. Everyone is happy.
Third, look at the process to see the process is like looking at a person, if a person is wearing a ball, it is difficult to inform his work will be serious (except for Mr. Chen Jingrun, of course). The quality of the process, to a certain extent, explains the quality of the product, especially the welding process. The lamp welding time requirement is less than 1.5 seconds. Too long welding time will directly affect the lamp life. This point we have been identified during the trial.
Infrared lamp arrangement and life-related?
Fourth, other aspects of the stability of infrared lamps from the working voltage.
Observing the light board carefully, we can easily find that several light tubes on the light board are connected in series, and then these several groups are connected in parallel to form the entire light board circuit. If there is a problem with one of the lamps in each group of lamps, the group of lamps will be off. Most of the current lamp on the market has a working voltage of 12V and some are 24V. The 12V lamps are mostly made up of 6 to 7 lamps in series, 24V is 14 or 15 are in series. It is also a lamp that has a fault. The number of non-operating lamps with a high voltage is much greater than that of a lamp with a low voltage. That is, the lamp with a low operating voltage has a higher stability.
The quality of infrared lamps depends mainly on two aspects, in addition to the LED infrared diode is the power supply. The vast majority of infrared lamps are installed in high places. Once a problem arises, the contractor first picks up the trouble, and then the contractor finds the seller and the seller finds the manufacturer. The profit of the seller is low, and the goods are delivered to the customer. The last light may not necessarily make money and may lose money. So the quality of power is very important!
5. Array-type infrared lamps Array-type infrared lamps are actually focused on a number of infrared LED chips on a substrate, the internal lines of which are the same as ordinary LED infrared lamps. Array infrared lamps must pay attention to the cooling measures. The back of the good-quality array infrared lamp has a thick heat sink, and thermal grease is also coated between the array substrate and the heat sink to facilitate heat dissipation.
Array-type infrared lamps have the advantages of small size and light weight, but they also have their shortcomings. Because they are also connected in series after the first parallel line, once a chip is damaged will result in a group of lights do not work, and can not replace this damaged chip.
If the number of damaged groups is large, the entire substrate must be replaced, and the maintenance cost is relatively high.
six. About high-power infrared lamp High-power infrared lamp (Piranha encapsulation) is the most attention is the heat, light board with aluminum substrate, and through the screw connection with the chassis, through the shell heat. In addition, many built-in fans, through the forced air cooling to increase the heat exchange between the lamp and the shell. If you use an ordinary circuit board, you can conclude that the quality of this light board is certainly not high, and the life expectancy is certainly not long.
Seven. About the life of infrared lamps Manufacturers generally have a nominal life of 25,000 hours. The actual life is related to the lamp's production process, circuit design, power quality, and work environment.
First, the distinction between positive and negative cores The use of positive or negative cores determines the quality of infrared lamps. The price between the two is also very poor, and even a difference of more than five times. This is also the price of infrared lamps in the market. An important reason. The camera is most sensitive to the luminescence spectrum at 850 nanometers of the lamp, that is, a red burst infrared tube, and the infrared tube of this band is also the most expensive. Remove the lamp plate of the infrared lamp and find an adjustable power supply. In the dark environment, the output voltage of the regulated power supply is first adjusted to the rated working voltage of the infrared lamp, and the infrared lamp is connected. At this time, the infrared lamp works normally, and then the voltage is gradually lowered until the lamp tube goes out and the lamp is turned off. The degree of luminosity is the same. If all the lamps on the lamp panel are illuminated during this process, then the lamp is using a positive core; if there are any lamps that are slightly bright and the lamps are slightly darker, then the quality of the wick makes people doubtful. . There is also a method of measurement. The operating voltage of each lamp is measured while the infrared lamp is operating normally. Most LED infrared lamps currently on the market use low-power lamps. The chips are mostly 12MIL or 14MIL [mil = 0.0254 mm]. The normal working voltage of each lamp is about 1.5V. .
With a digital multimeter, range switch to 2V file, measuring the working voltage of each lamp, if the positive core tube, the error value of the working voltage of each lamp within 0.03V, if greater than this value, especially the general comparison When it was large, it indicated that the lamps were not positive. This method is also suitable for 940 nm infrared lamps.
The advantages of a positive core tube are that it works stably. When it is new, it is as new as it is. It is as old as it used to be. After working for 35 years, the lamps on the lamp panel are seen again. They are very consistent. If the suspicion is low, proper adjustment of the operating current can make it rejuvenate. Dispersing the lamp is not the same. After six months of operation, some lamps on the lamp board are dark and there is no failure within one year. Even if you replace the bad pipe, it will still fail after a long time, because the overall quality is too bad.
Second, the size of the wick chip The normal method is to use chemical solvents to measure the size of the wick after the colloid dissolved. But for most people, even if you can dissolve the colloids, you cannot measure accurate data because we don't have a very accurate measurement tool [1 mil = 0.0254 mm]. It is usually to see the operating current. In general, the maximum operating current for a 12 MIL lamp is no more than 60 mA, and no more than 70 mA for 14 MIL. However, due to the market and other factors, some of the all-in-one 12MIL lamps have 80 mA of operating current. This method is not sure. But we can provide a reference, that is, the operating current of the chip may be large, but the current is too short life. For example, the operating current of a lamp of 12 MIL is 80 mA, and its lifetime is at most 2 years. You know this, you can have more plates on hand. Anyway, if you buy a lamp for one time, you have to make a profit for sales and engineering. Everyone is happy.
Third, look at the process to see the process is like looking at a person, if a person is wearing a ball, it is difficult to inform his work will be serious (except for Mr. Chen Jingrun, of course). The quality of the process, to a certain extent, explains the quality of the product, especially the welding process. The lamp welding time requirement is less than 1.5 seconds. Too long welding time will directly affect the lamp life. This point we have been identified during the trial.
Infrared lamp arrangement and life-related?
Fourth, other aspects of the stability of infrared lamps from the working voltage.
Observing the light board carefully, we can easily find that several light tubes on the light board are connected in series, and then these several groups are connected in parallel to form the entire light board circuit. If there is a problem with one of the lamps in each group of lamps, the group of lamps will be off. Most of the current lamp on the market has a working voltage of 12V and some are 24V. The 12V lamps are mostly made up of 6 to 7 lamps in series, 24V is 14 or 15 are in series. It is also a lamp that has a fault. The number of non-operating lamps with a high voltage is much greater than that of a lamp with a low voltage. That is, the lamp with a low operating voltage has a higher stability.
The quality of infrared lamps depends mainly on two aspects, in addition to the LED infrared diode is the power supply. The vast majority of infrared lamps are installed in high places. Once a problem arises, the contractor first picks up the trouble, and then the contractor finds the seller and the seller finds the manufacturer. The profit of the seller is low, and the goods are delivered to the customer. The last light may not necessarily make money and may lose money. So the quality of power is very important!
5. Array-type infrared lamps Array-type infrared lamps are actually focused on a number of infrared LED chips on a substrate, the internal lines of which are the same as ordinary LED infrared lamps. Array infrared lamps must pay attention to the cooling measures. The back of the good-quality array infrared lamp has a thick heat sink, and thermal grease is also coated between the array substrate and the heat sink to facilitate heat dissipation.
Array-type infrared lamps have the advantages of small size and light weight, but they also have their shortcomings. Because they are also connected in series after the first parallel line, once a chip is damaged will result in a group of lights do not work, and can not replace this damaged chip.
If the number of damaged groups is large, the entire substrate must be replaced, and the maintenance cost is relatively high.
six. About high-power infrared lamp High-power infrared lamp (Piranha encapsulation) is the most attention is the heat, light board with aluminum substrate, and through the screw connection with the chassis, through the shell heat. In addition, many built-in fans, through the forced air cooling to increase the heat exchange between the lamp and the shell. If you use an ordinary circuit board, you can conclude that the quality of this light board is certainly not high, and the life expectancy is certainly not long.
Seven. About the life of infrared lamps Manufacturers generally have a nominal life of 25,000 hours. The actual life is related to the lamp's production process, circuit design, power quality, and work environment.
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