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August 02,2023

Design principle of patch fuse.starter motor fuse

　　　　Most SMD fuses look like standard SMD devices, using single or multi-layer ceramic substrates. Some previous designs used epoxy glass fiber substrates similar to printed circuit boards. Its structure includes: a shell, a lower cover, quartz sand, a fuse, and two terminal blocks. The shell is a ceramic box like structure without a bottom surface, and the two terminal blocks are connected together through a suspended fuse set inside the shell, which is clamped on the edge of the shell. The basic fuse in the middle is a high conductivity material, such as copper, gold or copper tin, silver palladium alloy.　　Depending on the type of substrate, the fuse can use laser fine tuned thick film deposits or chemically etched metal layers to achieve the desired performance parameters, and adhesive gold wires can also be used. Due to the determined shape and thickness, when subjected to overvoltage and the current reaches a certain level, the fuse will fuse within a certain period of time.　　To a

July 12,2023

Basic Introduction to Temperature Control Fuses.lighting circuit fuse rating

　　　　A temperature fuse is a circuit breaker that uses the heat generated by itself to melt the melt after the current exceeds a specified value for a period of time, thereby causing the circuit to disconnect; A current protector made using this principle. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment. As short circuit and overcurrent protectors, they are one of the most commonly used protective devices.　　A fuse is an overcurrent protector. The fuse mainly consists of parts such as melt, melt tube, and external filler. When in use, the fuse is connected in series to the protected circuit. When the current of the protected circuit exceeds the specified value and after a certain period of time, the heat generated by the melt itself fuses the melt, causing the circuit to disconnect, thus playing a protective role. Electrical appliances that use metal conductors as the melt to break the circuit are connected in series in the ci

July 19,2023

Thermal cutoff NEC.best hair thermal protector

　　　　Although Thermal cutoff has high reliability in design, there are limits to the abnormal conditions that a single Thermal cutoff can cope with. In addition, due to man-made or unpredictable force majeure, the Thermal cutoff is damaged and cannot function normally, so the circuit cannot be cut off in time when the machine is abnormal. Therefore, when the machine is overheated, when the wrong action has a direct impact on the human body, when there is no circuit cut-off equipment except the fuse, and when high safety is required, more than two Thermal cutoff with different fusing temperatures should be used.　　The thin Thermal cutoff is specially developed for the over temperature protection of lithium ion batteries. Its working principle is the same as that of the second Thermal cutoff mentioned above. The circuit is connected with low melting point alloy, which is wrapped with flux resin, connected with metal guide plate and sealed with plastic material. When there is a short circui

September 12,2023

Analysis of Two Reasons for Blowing of Self Recovery Fuses during Operation.fast blow fuse screwfix

　　　　Self recovery fuses are one of the preferred protective components for many electronic circuits. When a self recovery fuse is in operation, it is inevitable that the circuit will blow. For recoverable fuses that blow in daily use, we must understand the cause in order to solve the problem with the circuit board. Below, we will follow the editor to understand the two situations where self recovery fuses blow during operation:　　Scenario 1: The self recovery fuse is broken in the middle and intact on both sides, which is caused by excessive load current causing the fuse to blow or be damaged, and the melting point to decrease, but the current is not too high.　　Scenario 2: When the self recovery fuse melts, there are burn marks and black and white ash near the fastening screws. This is caused by an instantaneous short circuit of the power supply and a high short-circuit current.　　From the above two situations, it can be concluded that when a self recovery fuse blows during operation, i

July 06,2023

Self resetting fuse.air conditioner fuse block pull-out replacement

　　　　Low zero power resistance: The self resetting fuse has low impedance, low power loss during normal operation, and low surface temperature.　　Fast overcurrent protection speed: Due to its material characteristics, the self resetting fuse has a much faster response speed to overcurrent conditions than other overcurrent protection devices.　　Self locking operation: The self resetting fuse is in an overcurrent protection state, locked in a high resistance state with minimal current. Only after cutting off the power supply or the overcurrent disappears, can the low resistance state be restored.　　Automatic reset: The self resetting fuse resets itself after providing overcurrent protection (troubleshooting), without the need for replacement.　　High current resistance: Self restoring fuses have excellent high current resistance, and some specifications can withstand 100A current impact.　　Application: PPTC has a wide range of applications and can be used in various electronic products, communi

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Fuseless car charger, carefully burn your phone

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2023-04