
Nowadays, the city's lighting project has basically eliminated the neon lights, and the LED guardrail tubes and other lamps are used for the production. The application of the guardrail tubes is particularly extensive. However, since the birth of the guardrail tube, there have been various quality problems: due to the low-cost bidding strategy of the government and other owners, manufacturers are lacking in the selection of lamp beads and components, product design, construction and acceptance. Strict supervision has hindered the development of LED guardrail tubes. Manufacturers do not pay attention to development, and only low-cost competition will eventually lead to the general poor quality of the barriers in the market. At present, the vast majority of LED guardrail tube manufacturers in China have accumulated too little experience. They only saw that certain categories are profitable and havetily launched, but they have not invested in research and development, and they have long-term development plans. Many of them are shoddy in family workshops.
Semiconductor Fuse And Ferrite
Fuse refers to an electric appliance that, when the current exceeds the specified value, melts the fuse and disconnects the circuit with the heat generated by itself.When the current exceeds the specified value for a period of time, the fuse melts and disconnects the circuit with the heat generated by the fuse itself.A current protector made from this principle.The fuse is widely used in high and low voltage power distribution system and control system as well as power equipment.
Ferrite is a metal oxide with ferrous magnetism.As far as electrical properties are concerned, the resistivity of ferrite is much larger than that of single metal or alloy magnetic materials, and it has higher dielectric properties.Ferrite magnetic energy also shows high permeability at high frequencies.As a result, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and weak current.Due to the low ferrite magnetic energy stored in the unit volume, saturated magnetic induction strength (Bs) and low (usually only pure iron 1/3 ~ 1/5), and thus limits its higher requirements in the low-frequency magnetic energy density in the field of high voltage and high power applications.
Semiconductor Fuse, Fuse Cutout, Protection Fuse, Square Fuse, Fuse Link, Ceramic Fuse, Fuse Box, Fuse Resistors
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