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September 20,2023

The Application of Self Recovery Fuses in Automotive USB Systems.battery terminal fuse nissan problems

　　　　Nowadays, cars generally come with USB 3.0 ports. In addition to overcurrent and overvoltage protection, sensitive electronic devices using high-speed interfaces such as USB and HDMI also require electrostatic discharge (ESD) protection. Three different types of circuit protection devices can help avoid these potential destructive events.　　PolySwitch polymer positive temperature coefficient (PPTC) devices can provide self-healing protection in USB applications. Placing the PolySwitch PPTC device on the VBUS port of the USB power supply can limit the current during short circuit events, help prevent damage caused by sudden short circuits, and help achieve UL60950 compliance.　　The design of USB 3.0 uses circuit protection devices to help prevent overcurrent (PTTC, left) and overvoltage (PolyZen, right) damage at the power port, as well as ESD (SESD device) events at the data port　　For overvoltage protection in USB 3.0 applications, PolyZen devices use a hybrid approach that integrate

September 15,2023

The Development History of Micro Fuses.does fuse brand matter

　　　　From a long-term perspective, the development process of micro fuses is mainly a new variety derived to meet market demand. Fuses protect the circuit by fusing themselves with the Joule heat of the current flowing through the body of a fusible metal, thereby cutting off the circuit.　　In the second half of the 19th century, fuses emerged with the invention of various electrical equipment led by electric lights. Since then, the structural form of fuses has remained basically unchanged and has continued to this day. We often see things like glass tube fuses and chip fuses in cars. As a protective component of electronic devices, glass tube fuses have been used for a long time. However, due to their large size, easy breakage, and inability to achieve automated installation, the demand for miniature fuses in the industry is becoming increasingly high.　　The main purpose of traditional fuses is to protect the input part of the power supply. Nowadays, there have been some changes in the si

August 16,2023

Parameters and characteristics of commonly used 40A disposable fuse.tv keeps blowing fuse

　　　　The segmented capacity of the 1206 series 40A disposable fuse is as follows. When the current passing through the fuse is 40A, the fuse can maintain internal fusing for at least 4 hours. However, when the current passing through the fuse is 3.5 times the rated current, which is 140A, the fuse will fuse within 5 seconds, thereby protecting the board. The size specification of this part number is: 3.2mm * 1.6mm, with a thickness of 0.75mm　　The 1206 series 40A disposable fuse has set industry standards in terms of performance, reliability, and quality. The solderless design provides excellent switching and temperature cycling characteristics during use, and enables our SMD fuses to have higher heat resistance and impact resistance than other subminiature fuses.　　The main characteristics of the 1206 series 40A disposable fuse include: ① rapid fusing; ② Reflow soldering and wave soldering are compatible; ③ Ceramic and glass structures; ④ It belongs to the disposable fuse type; ⑤ Lead fr

August 26,2023

The specific application of patch self recovery fuses.mini cooper fuse box diagram

　　　　Patch self recovery fuse (PTC: 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 an overcurrent occurs in the circuit, causing 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 circuits. After the overcurrent disappears, it automatically returns to the low resistance value.　　SMD self recovery fuses are widely used, so let's take a look at the specific applications of their products.　　1. Application in circuit control and sensors:　　Transistor temperature compensation circuit, temperature measurement and control circuit, overheat protection circuit, incubation box, electric fan, color roll washing, kettle, electric water heater, electric blanket,

November 07,2023

bimetal thermostat for samsung refrigerator.Classification of Fuses and Fuses

　　　　Fuses are divided into two categories: high voltage and low voltage. High voltage fuses for 3kV-35kV; Low voltage fuses are used for AC 220V, 380V, and DC 220V, 440V.　　High voltage fuses are divided into indoor and outdoor types, and the model description is as follows:　　For example, RN1-3/150-200 is indoor. The rated voltage is 3kV, the rated current is 150A, and the breaking capacity is 200MVA.　　Indoor models include RN1, RN2, RN3, RN5, RN6, etc., outdoor models include RW3, RW4, RW10, etc., and DC electric vehicles use RNZ, RNZ1, etc.　　Low voltage fuses are commonly classified into three categories: plug-in, tubular, and spiral. It can also be divided into three types: open type, semi closed type, and closed type.　　The open type is not used alone and is often combined with a knife switch; One or both ends of the semi enclosed tube are opened, and the molten particles are sprayed out in a certain direction. Please pay attention to safety when using; Closed type commonly includes

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Fuseless car charger, carefully burn your phone

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