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  First of all, although no  luminous powder  is used, color LEDs of different colors such as red, yellow, green, blue, and purple can be prepared, but because the luminous efficiency of these different color LEDs is very different, after using luminous powder, you can use some The advantages of high luminous efficiency of band LEDs can be used to prepare LEDs of other bands to improve the luminous efficiency of this band. For example, some green wave LEDs have low efficiency, and a high-efficiency LED called "apple green" is prepared by using luminous powder for mobile phone backlights, which has achieved good economic benefits. Secondly, it is difficult to precisely control the light-emitting wavelength of LEDs, which will cause some wavelengths of LEDs to be unapplied and wasteful. For example, when 470nm LEDs need to be prepared, LEDs with a wide range from 455nm to 480nm may be prepared. LEDs with light-emitting wavelengths at both ends can only be disposed of a...

  When you or your business is in need of  wholesale glass dropper bottles , you probably don’t put much thought into the most important part of many products: the dropper cap assembly. Also known as a medicine dropper cap, glass dropper cap, plastic dropper cap, or eye dropper, we have a full selection on our site! If you have ever used essential oils, CBD oil, or liquid medication, you’ll know that without the glass dropper, the liquid would not go to its intended place but would instead cause a mess. Valuable products would also be wasted due to the difficulty in pouring just the right amount from the medicine dropper bottle. Glass droppers help customers and those dispensing products in  liquid dropper bottles  to avoid the loss of valuable inventory. What is a Dropper Cap Assembly? Child Resistant Dropper Cap Assembly Dropper caps are made of three main parts: the rubber bulb, the plastic cap, and the glass pipette. Together, they form the ca...

  Turbochargers can spin up to tens of thousands of revolutions, and at high speeds, foreign objects can cause them to fail catastrophically. What happens when a foreign body enters the supercharger? What if we should avoid foreign objects from entering? What is foreign object damage? A foreign object is an item that does not belong and does not meet the item specification. In a turbocharger, the entry of foreign objects can cause irreversible damage. It usually enters through the intake or exhaust and affects the performance of the turbocharger. Foreign body source Foreign object damage can occur in a number of ways. It can come from small particles entering through damaged or cracked hoses, damaged or faulty filters, loose debris from previous turbocharger failures, and damaged engine parts. Also, it may come from other external sources. Examples include loose bolts, nuts, washers, rags, or other items that entered the intake duct during maintenance. Finally, loose particles can ...

  Journal bearings rely on fluid films(usually oil) to support rotating shafts. Ball bearings provide the same support of shafts through mechanical means. Both bearings are used to counter radial and axial loads. Journal Bearings The portion of the shaft supported by the bearing is called the journal and is usually hardened for wear-resistance. Bearing pad material is usually a softer material such as tin- and lead-based babbitt, bronze, copper-lead, sintered powdered metal, carbon, PTFE, etc. As the shaft rotates in the bearing clearance it tends to want to climb up the bearing wall, creating a region of high pressure in the oil film which supports the shaft journal. As the load on the shaft varies, so too does this region of high-pressure, making journal bearings quite tolerant of overloads and shock loads. Journal bearings are affected by the misalignment between bearing and shaft as its presence tends to hamper the formation of the fluid film. Ball Bearings A typical ball or ro...