South Korea developed a blue laser light source called more than LED (Figure)



It is reported that the Korean research team has developed a "new generation of cyan laser light source" that is superior in performance to LEDs (light-emitting diodes).

South Korea's POSTECH (formerly Pohang University of Technology), the five professors of the Department of Electrical and Electronic Engineering, announced that it has pioneered the development of a "laser source" that outperforms LEDs.

The laser light source is a cyan laser light source that consumes less power and has a faster light-emitting speed when a semiconductor similar to the LED is used. In general, an LED is a semiconductor component that emits light when it is connected to an electric current. The efficiency is 10 times higher than that of an incandescent lamp, and the life is semi-permanent.

The cyan laser source developed by the Group of Professors of the Five Powers uses the same semiconductor material as the LED, but it differs in the point of emitting a linear light-laser. Quanta explained: "With the fine mirror structure of the ring shape made on the surface of the semiconductor, the laser is spirally radiated, so that the light can be diffused into the three-dimensional space. When the current is applied, the speed of the light is higher than that of the LED. It is hundreds or even thousands of times faster and consumes far less power than LEDs.

However, its actual efficiency and future development remain to be seen.

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Single Notching

The single groove blanking process of motor blanking is a kind of blanking process relative to double blanking. Motor fixed, Rotor Core punching using single groove punching process, its mold design, manufacturing are relatively simple, suitable for small batch, variety of production, has the characteristics of low cost, fast change. With the development of advanced punching machine, production efficiency continues to improve, the single punching process is also developing rapidly. For the large motor, because of the cost of the duplex die and the equipment capacity, the single groove is also used. Another advantage of single groove punching is the consistency of groove size. Compound die is the same punch, stator or rotor groove completed at one time. How many slots correspond to the same number of punches, punch size to achieve complete has always been some difficulties: single slot punching is by the same punch to complete all the slots, groove consistency is better.
Stator and rotor laminations are an important part of motors and generators. For large-size and small-batch punching sheets, we usually use the notching method to produce them. The advantages of notching are that the cost of the notching die is low and the production cycle of the notching die is short. It is suitable for producing large size laminations, usually the outer diameter is from 500mm-1250mm. The slot size is more accurate than Laser Cutting.

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