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November 06,2023

temperature regulating waterproof mattress protector.

　　　　1： The testing process is as follows:　　1. Initial internal resistance Rimin measurement: Unpack, take out the fuse, and measure the internal resistance of the fuse;　　2. Welding: Solder the fuse onto the PCB through reflow soldering, with leads connected to the PCB for easy electrical performance testing;　　3. Hold current IHold test: Select a DC constant voltage and current source for testing. Adjust the voltage to the voltage Vmax specified in the specification,　　Adjust the current to the holding current Ihold specified in the specification and power on for 15 minutes;　　4. Action current Itrip test: Select a DC constant voltage and current source for testing. Adjust the voltage to the voltage Vmax specified in the specification,　　Adjust the current to the holding current Itrip specified in the specification and power on for 5 minutes;　　5. R1max test: Cool the activated fuse for 1 hour and measure the internal resistance of the fuse.　　2： Test standards:　　1. The testing environment i

October 14,2023

automotive blade fuse manufacturers.Why do fuses often open when turned on or just when the power is turned on

　　　　Most circuits generate an instantaneous surge current when the power is first connected. In capacitive or inductive circuits, this surge current is often many times, or even dozens of times, greater than the normal steady-state current. If the surge resistance of the fuse used in the circuit is not strong enough, the fuse will be blown off by high-energy surges. If the duration of this surge current is short and the energy released is insufficient to break the fuse, the fuse will not break and will only be damaged to a certain extent. It will only be broken after a certain number of surge impacts. Similarly, hot swapping of some plug-in components during the operation of the entire machine can generate large pulse currents. At this time, if the fuse's pulse resistance is not strong enough, it will often be blown by the pulse. To avoid fuses being blown off by surges or pulse currents and unable to function properly, we need to choose the correct type of fuse and choose the appropri

December 05,2023

tv fuse replacement cost.Basic Knowledge of Chip Fuses

　　　　Firstly, understand the function of fuses: Place the circuit fuse correctly. Then, the fuse will rise to a certain height and after a certain period of time, the fuse will cut off the current, thus protecting the operation of the circuit. The principle of patch fuses is the same, but the style is different. Below, we will have a detailed understanding:　　Chip fuses are mainly used in electronic products such as digital cameras, laptops, and smartphones. Due to differences in product technology, the selection focus varies from traditional glass tube fuses to micro fuses and chip fuses. The selection of chip fuses involves the following factors:　　The normal operating current of the circuit. The working current through the fuse should not exceed 70% of the rated current of the fuse.　　Pulse, surge current, surge current, starting current, and circuit transient. Chip fuses pay special attention to the following facts: due to the small process size, the impact resistance of chip fuses is

September 18,2023

The fuse industry is poised for growth.automotive blade fuse manufacturers

　　　　With the continuous expansion of innovative models, the LED industry and market in Guangdong Province have entered a virtuous cycle. In the past two years, the price of LED street light products has decreased by 40%, gradually approaching traditional lighting fixtures.　　After customers apply LED lighting products, they can significantly save energy and recover the renovation cost as soon as 3 years. Through a series of demonstration projects, the various advantages of applying LED lighting products have become widely recognized by society, and the enthusiasm for their promotion has greatly increased in many places.　　The widespread use of LED lights makes the night scenery in Guangdong particularly beautiful, especially in the Guangzhou area. As is well known, the night scenery in Guangzhou is very beautiful. The application of LED lights in Guangdong ranges from the remote Deqing mountainous area to developed areas such as Shenzhen and Dongguan. 800000 LED street lights illuminate

July 10,2023

The difference between fuse and circuit breaker.battery fuse blown symptoms

　　　　The same thing is that both can achieve short-circuit protection. The principle of a fuse is to use current to flow through the conductor, causing it to heat up. After reaching the melting point of the conductor, the conductor melts, so disconnecting the circuit protects the electrical appliances and circuits from being burned out. It is an accumulation of heat, so overload protection can also be achieved. Once the melt burns out, it needs to be replaced.　　A circuit breaker can also achieve short-circuit and overload protection for circuits, but the principle is different. It achieves circuit breaker protection through the bottom magnetic effect of the current (electromagnetic release), and overload protection through the thermal effect of the current (not fusing, and there is often no need to replace components). In practice, when the electrical load in the circuit approaches the load of the fuse used for a long time, the fuse will gradually heat up until it blows. As mentioned ab

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Fuseless car charger, carefully burn your phone

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2023-04