2023.09.19 Customer Annual Factory Audit_Industry Trends_News & Events

中文

19 2023-09

　　Today, the Topband visited our factory for the annual factory audit. The company is a global leading provider of intelligent control technology, we have established a partnership with them for more than 15 years."

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July 27,2023

Application of self recovery fuse in overcurrent protection of Industrial internet of things equipment

　　　　USB ports are increasingly included in Industrial internet of things (IIoT) devices. The data speeds of USB 3.0, 3.1 and 3.2 vary from 5GB/s to 20GB/s. USB protocol can provide bandwidth and reliability required by almost all industrial applications. The USB port provides a connection between the host and IIoT devices for real-time monitoring and control, enabling users to make smarter decisions and improve productivity across multiple processes. Overcurrent and overvoltage in IIoT devices may be caused by power overload, surge, or short circuit, which can generate a large amount of heat and increase the risk of physical damage or electrical fire.　　self recovery fuses can disconnect the circuit during a fault event like disposable fuses, but they are recoverable, allowing them to achieve longer lifespan of the product. Each fuse is composed of a positive temperature coefficient material, and its internal resistance increases exponentially with increasing operating temperature. The

August 10,2023

Working principle of self recovery fuse.battery charger fuse

　　　　In this link, the components that can block the oscillating current are usually fuses, but the general fuses are only disposable. If self recovery fuses are used, then the instruments in this type of circuit can be used for Test effort. And this type of function can be guaranteed not only by self recovery fuses, but also by some temperature sensors. However, these electronic components are far from fast in terms of reflection time compared to self recovery fuses. Therefore, for circuits with high-precision instruments, if some temperature sensors are applied, the oscillating current can burn out the instrument before the resistor blocks the power circuit.　　The function of a self restoring fuse is to provide overcurrent protection in the power circuit. A circuit with a high-precision instrument must have a fuse to maintain the safety of the high-precision instrument. However, if human factors are often used to remove and replace fuses during frequent use, it is not specific, which i

October 18,2023

surface mount fuse identification.Disposable fuse

　　　　There are two optional types of self recovery fuses and disposable fuses available for surface mounting. Both self recovery fuses and disposable fuses can respond to excessive current, but the "self recovery" device of self recovery fuses, based on polymer components, can automatically reset after overload disappears, achieving multiple overcurrent circuit protection. When a conductive polymer is heated by an overload current, its resistance will increase, thereby limiting the circuit current. The advantages are more prominent in many products. However, it is not possible to replace disposable fuses with self restoring fuses. Both have their own advantages and disadvantages. In terms of overload protection for circuits, the two do not have the best products. Only by fully understanding the performance differences between the two types of fuses can we make easier choices when choosing the optimal circuit protection scheme. Then, based on the specific working conditions of the circui

July 21,2023

Calculation method for high-voltage fuses.tv fuse replacement

　　　　For high current protection zones, the selected fuse should have the following performance: ① large capacity, usually in the tens to hundreds of A; ② Capable of withstanding instantaneous high currents and pulses; ③ High safety and reliability; ④ The operating environment temperature is relatively high; ⑤ Good mechanical characteristics.　　1. Selection of fuse type　　Select the appropriate type based on the working environment, size limitations, current characteristics, voltage characteristics, connection method, etc. of the fuse. Usually, high-voltage fuses for electric vehicles use American standard FWH, FWP, and other series.　　2. Determination of fuse parameters　　The rated current value of fuses is usually based on the value at an ambient temperature of 23 ± 5 ℃. In order to meet the actual operating requirements of electric vehicles, it is necessary to modify the rated current value.　　By using the above formula, a preliminary rated current of the fuse can be obtained. However, in

October 12,2023

automotive blade fuse colours.fuse PPTC for overcurrent protection in photovoltaic street light controllers)

　　　　Due to the fact that the intelligent control part of this new type of LED explosion-proof light is completed through RS485 serial communication, it was found in practical applications that the 485 interface chip is easily burned out. After analysis, overvoltage protection was not done properly, so TVS tube was selected as the overvoltage protection circuit, and it was found that it is still easy to be burned out by lightning.　　When I was in a state of exhaustion, I saw an overcurrent protection scheme using a self recovery fuse TVS tube. The experiment was successful, greatly improving the reliability of the explosion-proof lamp. I didn't expect to use a self recovery fuse PPTC in series at port 485, and then connect TVS in parallel to complete the task. There is no simpler solution than this method.　　The self restoring fuse PPTC is an overcurrent protector, also known as a ten thousand fuse, also known as a self resetting overcurrent protector or a polymer self restoring fuse. Whe

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2023.09.19 Customer Annual Factory Audit

19

2023-09