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October 27,2023

automotive blade fuse holder.Common Sense for Fuses

　　　　A fuse refers to a self destructing fuse that experiences significant surges or other current exceeding limits in a circuit; In order to protect the components of other parts of the circuit where the fuse is located and the equipment is normal, the cost of replacing the fuse can be ignored compared to replacing the entire circuit that may be damaged. Due to the fact that fuses are a common element that needs to be replaced, we will introduce two basic concepts and provide a more in-depth introduction to fusion applications and testing and diagnostic methods. Please refer to the relevant articles on the website.　　Common Sense 1: Determine if the fuse is burning (fuse)?　　If the fuse can be removed from the circuit, it can be a visual Shenzhen fuse to determine whether it has burned out; The simplest method to determine whether a fuse is a continuity test is to blow other materials. Quickly test with a multimeter to determine if it is working properly, by hearing a beep and touching t

October 18,2023

air conditioner fuse box outside.Self recovery fuse

　　　　When an overload occurs, a disposable fuse will blow at once. Although it can provide overcurrent protection, it needs to be replaced. The core part of a conventional fuse is a section of wire, which is heated to the melting point when the current is too high. After the wire melts, the current in the circuit drops to zero. So in some circuits that require complete power outage, or products with higher risk factors such as machinery, it is more suitable to use disposable fuses, which has a higher safety factor when used.　　Both traditional disposable fuses and self restoring fuses can achieve overcurrent circuit protection. Both achieve protection by reacting to the heating phenomenon generated by excessive current in the circuit. Fuses break the current by blowing, while self restoring fuses rely on changing from a low resistance state to a high resistance state to limit the magnitude of the current.

December 18,2023

plug socket blown fuse.Repair Methods for Fuses -0805 Fuses

　　　　The fuse is broken, can you replace it yourself? There are two types of color TV fuses, severe and mild. Slight, refers to a slight blown fuse, usually replaced with a new one. Severe refers to the metal inside the fuse being burned to pieces or blackened out. If you replace it with a good fuse at this time, you will see the fuse light up as soon as you turn it on and immediately burn it out. As soon as the machine is turned on, the fuse will burn out. Therefore, the voltage measurement method with a universal meter cannot be used for maintenance, and only the resistance measurement method with a universal meter can be used for maintenance.　　The cause of severe fuse burning is often due to a short circuit or variable value in one or at most two parts of the circuit. The faulty parts are in the circuit after the fuse, mostly in demagnetization circuits, 220 rectifier circuits, and switching tubes.　　Based on the above knowledge of color TV fuses, the repair methods for color TV fuses

July 06,2023

Intelligent fuse.temperature switch thermostat thermal protector fuse

　　　　intelligent　　For most asynchronous rectifier boost switching converters that use inductors, there is a DC path between the input and output. The existence of this path can have two adverse consequences: firstly, once the output short circuit or severe overload time exceeds a few hundred milliseconds, it will cause the diode (usually Schottky diode) to overheat and damage; Secondly, when for some reason, such as human shutdown, the switching oscillation circuit stops working, and there is still voltage at the load end, which is only one diode lower than the input voltage drop, the output will still consume energy. In addition, if the residual voltage is lower than the steady-state operating voltage range of the load, it will put the circuit in an uncertain state.　　For applications where the output current is relatively small (less than 5A), using a single-chip current mode controller and high-end current sampling technology can effectively solve both of the above problems. In these

October 17,2023

high voltage fuse blown microwave.How to understand the holding current and triggering current of fuses

　　　　A netizen left a message asking: How do you understand the difference between maintaining current and triggering current of a fuse?　　Fuses all have a holding current and a triggering current. Below, the editor will analyze the difference between the holding current and triggering current of fuses.　　The holding current (IH) is the highest current that can pass through the circuit without triggering a resistor in still air (ranging from 20 ℃ to 25 ℃ depending on the temperature of the product), which is the highest operating current at room temperature.　　The triggering current (It) is the minimum current at which the Lite fuse operates in still air (which can range from 20 ℃ to 25 ℃ depending on the temperature of the product), i.e. the minimum fault current at room temperature.　　For most fuse products, the ratio of It to IH is 2:1, which may be as low as 1.7:1 for some products and as high as 3:1 for others. The difference in materials and production methods, as well as the change i

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Fuseless car charger, carefully burn your phone

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2023-04