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Fuseless car charger, carefully burn your phone

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2023-04

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October 24,2023

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　　　　The operating principle of a fuse is that an overcurrent causes the thermal balance on the melt to be disrupted. When the temperature of the melt rises to the melting point of the metal material, the middle part of the melt changes from solid to liquid. Due to the surface tension and gravity of the metal material suspended in the tube, the liquid part of the melt pulls away from both ends and sags downwards. The voltage caused arcing causes the melt temperature to continue to rise, further arcing and further distance pulling apart, Until the circuit is completely cut off. For SMD fuses, their operating principle is the same. However, due to different structural states, the surrounding of the metal melt is tightly surrounded by the polymer or ceramic materials of its substrate. Even the melted metal cannot contract towards both ends and can only rely on diffusion, infiltration, or absorption towards the surrounding materials. If the overcurrent disappears during this process (such a

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　　　　In circuit applications, the application range of diodes is becoming increasingly widespread, among which TVS diodes and voltage regulator diodes are more common. Many people are not very clear about these two. Today, the editor leads everyone to re understand them.　　From a definition perspective, TVS diode is an efficient circuit protection device developed on the basis of voltage regulator technology. Its circuit symbol and appearance are the same as ordinary voltage regulator diodes; Zener diode, also known as Zener diode, refers to the phenomenon of using a pn junction to reverse breakdown state, and its current can change over a large range while the voltage remains basically unchanged, making it a diode that plays a stabilizing role. (Related reading: Principles and Introduction of Transient Suppression Diodes (TVS))　　In principle, when the two ends of a TVS tube are subjected to instantaneous high-energy shocks, it can suddenly reduce its impedance at a very high speed (up t

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　　　　The fuses used in power circuits and high-power equipment not only have the three parts of a general fuse, but also have arc extinguishing devices. This type of fuse not only protects the circuit with a high working current, but also has a high voltage at both ends when the melt melts. Often, the melt has melted (melted) or even vaporized, but the current is not cut off, The reason is that at the moment of fusing, under the action of voltage and current, an arc pulling phenomenon occurs between the two electrodes of the fuse. This arc extinguishing device must have strong insulation and good thermal conductivity, and be negatively charged. Quartz sand is a commonly used arc extinguishing material.　　Fusing device　　In addition, some fuses have a blown indicator device, which is used to indicate that when the fuse is activated (blown), its appearance changes to a certain extent, making it easy for maintenance personnel to detect, such as emitting light, discoloring, and popping up sol

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　　　　The rated current of the melt is not equal to the rated current of the fuse. The rated current of the melt is selected based on the load current of the protected equipment. The rated current of the fuse should be greater than the rated current of the melt and determined in conjunction with the main electrical appliance.　　The fuse is mainly composed of three parts: the melt, the shell, and the support, among which the melt is a key component that controls the fusing characteristics. The material, size, and shape of the melt determine the fusing characteristics. Melt materials are divided into two categories: low melting point and high melting point. Low melting point materials such as lead and lead alloys have a low melting point and are prone to melting. Due to their high electrical resistivity, the cross-sectional size of the melt produced is larger, and the metal vapor generated during melting is more. They are only suitable for fuses with low breaking capacity. High melting poin

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　　The product variety is diverse and the specifications are complete, mainly including various series such as overcurrent protection components (PPTC) mounting, pins, rings, long bars, etc. The advanced, efficient and experienced manufacturing team can meet the dynamic delivery requirements of the current rapid development of the manufacturing industry.　　In recent years, with the rapid development of fuse PPTC technology and market demand, our company has established a factory with independent chips and developed and produced a large number of SMT fuses and direct insertion fuse production lines in various packaging forms, such as 1812-1206-1210-0805-2920-0603 direct insertion fuse 16V 30V 60V 72V 90V 250V;　　Our company has excellent equipment, abides by the contract, delivers on time, and offers reasonable prices, with the aim of "honesty and trustworthiness, innovation, perfect quality, and customer satisfaction". Welcome customers to call, write inquiries, and contact us! We are wil

+86 755 89762685

MB:+86 13924633629 Ms.vicky

E-mail: waimao@xcfuse.com


Factory :

XC Electronics(Shenzhen)Corp.,LTD

Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China


Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd

Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China

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