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　　　　It is demonstrated that the circuit remains intact when there is a non fault pulse current and can provide protection against long-term overload.　　Delay fuses are used in some circuits where the current at the moment of switching is several times greater than the normal working current. Although this current peak is high, it appears for a short period of time, and we call it pulse current. Ordinary fuses cannot withstand this current, and delay fuses are needed in such circuits. If larger fuses are used, they will not be protected when the circuit is overloaded.　　The melt of the delay fuse is specially processed and has the function of absorbing energy. Adjusting the amount of energy absorption can enable it to withstand both impact current and provide protection against overload. The standards for delay fuses have regulations on delay characteristics. If the specified characteristics cannot meet your requirements, you can contact the delay fuse manufacturer for a solution.

August 19,2024

Fuse material

　　　　The material of a fuse has a decisive impact on its performance. Based on the search results, we can obtain the following information:　　Fuses are generally made of silver copper alloy with high resistivity and low melting point. This alloy has good conductivity and melting characteristics, which can quickly melt when the current is too high, thus protecting the circuit. Early fuses were often made of lead antimony alloy, but due to safety reasons, this material has been phased out.　　When choosing fuse materials, factors to consider include melting point, resistivity, conductivity, mechanical strength, and corrosion resistance. Different application scenarios may require different types of fuses, so the requirements for materials may also vary.　　In summary, modern fuses are mainly made of silver copper alloy and no longer use lead antimony alloy. When selecting fuse materials, multiple factors should be considered comprehensively to ensure their reliability and safety in specific en

September 05,2023

Application of Self Recovery Fuses in the Protection of Rolling Gate Motors.slow blow fuse vs fast blow fuse

　　　　Rolling gate is a widely used door in modern factories and shops, which can not only automatically lift and manually switch, but also be remotely operated. The core of this type of door is to control the forward and reverse rotation of the small motor to achieve its function.　　The rolling gate is driven by a small motor, which not only often gets stuck and cannot move, but also causes the small motor to stall, overload, and burn out due to unstable voltage, high temperature, high humidity, and other reasons. So small motors must be designed with protective circuits to ensure their reliability and stability.　　There are various methods for protecting small motors. Previously, bimetallic temperature controllers were often used for protection. When the coil temperature of the small motor increased, the circuit would be disconnected, and when the temperature decreased, the circuit would be reconnected. If the power supply was not cut off, the motor would continue to be powered on and wo

August 15,2024

Application of PPTC Thermistor in Batteries

　　　　Compared with NiMH or NICd batteries, lithium-ion batteries have a higher current density and are widely used in various portable devices.　　Lithium ion batteries are usually very sensitive to overcharging. When the voltage at both ends of the battery is too high during charging, it will increase battery leakage　　The danger of smoking, burning, and bursting (which is often quite severe). Overcharging may be caused by uncontrolled charging, electrode errors, or　　Caused by using an incorrect charger. When the charging and discharging current of lithium-ion batteries is too high or there is an external short circuit, internal heating may damage the battery or burn other components, seriously shortening the battery's cycle life.　　The task of protecting the circuit is to monitor the parameters of the battery's charging and discharging status in response to various possible faults, in order to ensure battery life and efficiency, and to prevent damage to the battery and external devices su

September 14,2023

The Use Value of Self Recovery Fuses on Tablets.plug fuse keeps blowing

　　　　What are the benefits of using self restoring fuses? The application of self-healing fuses as a protective circuit for tablet lithium-ion batteries not only reduces or avoids various natural or human factors that may cause damage and damage to the battery, but also heats up, damages or explodes during overcharging and discharging. The main purpose of applying PPTC to the USB interface is to prevent USB load short circuits from burning out the control circuit of the tablet At the same time, it also avoids accidentally inputting current to burn out the internal circuits of the tablet computer.　　The above applications can reduce economic losses and honor losses to manufacturers and sellers, and require fewer protective components with low cost, simple and reliable design. They can also save maintenance and repair costs for customers, improve product quality and customer reputation, and increase market competition advantages.　　In addition to applying a self restoring fuse protection sc

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Fuseless car charger, carefully burn your phone

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2023-04