یوآننگجی گرمی کی کھپت کے بارے میں, in order to make the LED street light power supply work in a relatively wide input voltage range of AC85-265V, the LED series-parallel connection mode of the light board is very important. Since the current power supply is generally a non-isolated step-down constant current power supply, when the required voltage is 110V, the output voltage cannot exceed 70V, and the number of series connections cannot exceed 23. When the input voltage is 220V, the output voltage can reach 156V, یہ ہے, the number of series connections cannot exceed 45. The number of parallel connections cannot be too large, otherwise the working current will be too large and the power supply will heat up seriously.
APFC active power compensation is to first use L6561/7527 to boost the voltage to 400V, and then step down the voltage, which is equivalent to two switching power supplies. This solution is only used under specific conditions. The characteristics of ED lighting materials determine that they are greatly affected by the environment. مثال کے طور پر, when the temperature changes, the current of the LED will increase, and the voltage will also increase. Long-term operation exceeding the rated current will greatly shorten the service life of the LED lamp beads. LED constant current is to ensure that the working current value remains unchanged when environmental factors such as temperature and voltage change.
1: For LED street lights, their design needs special attention. For manufacturers, the product structure design is relatively reasonable, but with the different environments and the continuous upgrading of products, the product structure will become more and more reasonable, so the heat dissipation and waterproof performance of LED street lights are difficult to guarantee, so for consumers, they must identify regular manufacturers.
2: Non-isolated, generally isolated power supply, such as 15W, is placed in the LED street light power supply tube. Its transformer is very large. Isolation can generally only do 15W. It is rare to exceed 15W, and the price is very expensive. اس لیے, the cost performance of isolation is not high. عام طور پر, non-isolation is more mainstream, and the volume can be made smaller. Most non-isolation safety measures are well prepared, and there is no problem. If space permits, an isolated power supply can also be made.
3: گرمی کی کھپت کے حل کا بنیادی عنصر یہ ہے کہ ایل ای ڈی اسٹریٹ لیمپ پاور بیڈ زیادہ گرمی کے بغیر اپنی زندگی کو بہت بڑھا سکتا ہے۔. عام طور پر, ایلومینیم مرکب استعمال کیا جاتا ہے, جس سے گرمی کو ختم کرنا اور بیرونی حرارت کی کھپت کے علاقے کو زیادہ سے زیادہ پھیلانا آسان ہے۔. اتنی وسیع ایل ای ڈی مارکیٹ کا سامنا ہے۔, یہ واقعی جیورنبل سے بھرا ہوا ہے اور سائنسی طور پر ترقی کر سکتا ہے۔.
4: طویل مدتی استحکام کو یقینی بنانے کے لیے واٹر پروف کنٹرولرز استعمال کرنے کی کوشش کریں جبکہ صارفین کو من مانی طور پر روشنی کے وقت کو تبدیل کرنے سے روکیں. کیونکہ وائرنگ کے ٹرمینلز نیچے کی طرف ہیں اور وائرنگ U شکل میں جھکی ہوئی ہے۔, یہ لائن سے کنٹرولر میں پانی ڈالنے سے روک سکتا ہے۔. صارفین کو مشورہ دیا جانا چاہیے کہ وہ بہتر کوالٹی کے تانبے کی تاریں استعمال کریں۔. آؤٹ پٹ کے عمل کے دوران کرنٹ اور وولٹیج کا ایک خاص نقصان ہوگا۔, which will not only increase power consumption, but also cause the LED driver power supply to fail to work properly in severe cases.
5: The characteristics of LED lighting materials determine that they are greatly affected by the environment. مثال کے طور پر, when the temperature changes, the current of the LED will increase. If it works for a long time exceeding the rated current, the service life of the LED lamp bead will be greatly shortened. LED constant current is to ensure that when environmental factors such as temperature and voltage change, its working current value remains unchanged.
6: Apply three primary colors or multi-color phosphors on purple or ultraviolet ایل ای ڈی چپس, and use the long-wave ultraviolet light or purple light emitted by the chip to excite the phosphors, thereby achieving white light emission. This type of LED has good color rendering, but there are similar problems to the second method, and the red and green phosphors with higher conversion efficiency are mostly sulfide systems.
7: There are three main methods for LED fluorescent lamps to use phosphors to achieve white light, لیکن ان میں سے کوئی بھی پوری طرح بالغ نہیں ہے۔, which seriously affects the application of white light LEDs in the lighting field.