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September 04,2023

Application of Self Recovery Fuses in Transformer Protection.solar panel fuse location

　　　　Power transformers are commonly used components in electronic products and are widely used due to their simplicity and ease of manufacture. There are two types of transformers: step-up transformers and step-down transformers (excluding impedance transformers and line matching transformers). They are also called linear transformers because they increase or decrease the original AC voltage proportionally and output it to the load for power supply.　　In application, step-up transformers are mainly used in instruments and meters; For the power supply of electronic products, the majority are actually step-down transformers. Structurally, the transformer is composed of stacked silicon steel sheets and primary coils. The coil is mostly wound with enameled copper wire, and now it is also used with enameled aluminum wire.　　For step-down transformers, their characteristics are: the primary input is 220V, the secondary output is low-voltage, the secondary current is small, the secondary curren

August 25,2023

Features of plug-in self recovery fuse.resettable fuse hold current

　　　　PPTC self recovery fuse is an overcurrent protection component that can automatically reset. It is made by adding conductive particle materials to a polymer organic polymer under high pressure, high temperature, and vulcanization reaction conditions, and processed through a special process.　　The PPTC self recovery fuse plug-in packaging series is divided into A6 (6V), A16 (16V), A30 (30V), A60 (60V), A72 (72V), A120 (120V), A240 (240V), A250 (250V), A600 (600V) series, which are distinguished by different withstand voltage values.　　Product features:　　After circuit obstacles are eliminated, the fuse automatically recovers without the need for manual replacement. It can be reused and reduces costs.　　Fast action time and recovery time increase reliability.　　Safety certification: UL, compliant with ROHS certification.　　The PPTC self recovery fuse of the plug-in has higher voltage and greater current than the patch, better meeting customer needs.　　Application:　　Line protection, power ou

December 06,2023

mini vs micro blade fuse.Development of SMD chip fuse market

　　　　SMD chip fuses have been very popular in the domestic market in recent years, and they are on par with plug-in fuses. However, due to their small size and other advantages, SMD chip fuses have gradually occupied a place in daily life. Now, I will briefly explain the market prospects of SMD chip fuses.　　In its over 100 year history, small fuses have gone through multiple stages of development, including cylindrical, plug-in, axial or radial pin types. The surface mount fuse, which emerged in the 1990s, has developed to account for nearly 30% of the overall small fuse application market in less than 20 years, and is continuously expanding, replacing other traditional forms of fuses, indicating its strong vitality.　　With the vigorous development of the electronic industry, the small fuse market is showing a continuous growth trend, especially in 2015, where the development momentum is encouraging. The development of surface mount fuses is increasing day by day, accounting for one-thir

August 26,2023

Selection steps for self-healing fuse PPTC.plug in mcb for old fuse box

　　　　The self-healing fuse PPTC is a type of overcurrent electronic protection component, which is made by adding conductive particle materials to a polymer organic polymer under high pressure, high temperature, and vulcanization reaction conditions, and processed through a special process. Self recovery fuse (PPTC: Polymer self recovery fuse) is a positive temperature coefficient polymer thermistor used for overcurrent protection and can replace current fuses. When the circuit is working normally, its resistance value is very small (voltage drop is very small). When the circuit experiences overcurrent and causes its temperature to rise, the resistance value sharply increases by several orders of magnitude, reducing the current in the circuit to below the safe value, thus protecting the subsequent circuit. After the overcurrent disappears, it automatically returns to a low resistance value. The above is the working principle of a self recovery fuse.　　Chip self recovery fuse　　Most people

October 28,2023

youtube fuseschool.Does the fuse have a resistance value?

　　　　Fuses have resistance values, but in fact, even wires have resistance. However, the resistance of the wires is very small (the nature of the conductor), which is usually ignored in general circuit calculations. However, the resistance of a fuse is significantly higher than that of an equally long wire, so that it can protect the circuit.　　The fuse is marked with "5A 250V", indicating that the maximum current allowed for Shenzhen fuses is 5A, which is called the rated current; The maximum voltage allowed to pass through is 250V, which is called the rated voltage. If the current or voltage exceeds the rated value, the fuse will blow, causing the circuit to open, thus protecting the consumer (without a fuse, the consumer may be burned out).　　The principle of fuse blowing is Joule's law. Joule's law: The heat generated by an electric current passing through a conductor is proportional to the square of the current, to the resistance of the conductor, and to the time it is energized. Jou

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Fuseless car charger, carefully burn your phone

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2023-04