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November 24,2023

glow plug fuse price.Self recovery fuse selection

　　　　1. Determine the following parameters of the circuit:　　A Large working environment temperature b Standard working current c Maximum working voltage (Umax) d Maximum fault current (Imax)　　2. Select self restoring fuse components that can adapt to the ambient temperature and standard operating current of the circuit　　Use a temperature reduction {ambient temperature (℃) working current (A)} table and select the temperature that best matches the ambient temperature of the circuit. Browse this column to view values that are equal to or greater than the standard operating current of the circuit.　　3. Compare the high electrical rating of the selected component with the high operating voltage and fault current of the circuit　　Use the electrical characteristic table to verify whether the components you selected in step 2 will use the high operating voltage and fault current of the circuit. Check the high operating voltage and high fault current of the device. Ensure that Umax and Imax are g

November 11,2023

mini cooper fuse box symbols meaning.Application of PPTC chip fuse in single lithium battery

　　　　Nowadays, more and more products such as mobile phones, digital cameras (cameras), PDAs, MP3/4, etc. use lithium batteries as the power supply for system circuits. The requirements for power supply emphasize the advantages of lithium batteries such as small size, high energy density, no memory effect, and the ability to be reused multiple times. However, lithium battery explosions have also occurred frequently recently.　　So the safety of lithium-ion batteries is increasingly attracting people's attention. Choosing the appropriate patch fuse for the lithium battery protection board is also very important.　　1、 Composition of a single lithium battery　　Lithium batteries mainly consist of battery cells and battery protection plates (as shown in Figure 2)　　The main functions of the lithium battery protection board are: (1) overcharging protection, (2) over discharge protection, (3) overcurrent/short circuit protection　　Main components of lithium battery protection board: 1. Protection IC

October 19,2023

motorcycle fuse block with relay.Self recovery fuse parameters

　　　　IH: Maximum working current (25 ℃)　　IT: Minimum operating current (25 ℃)　　Itrip: Overload current　　Tmax: Maximum action time of overload current　　Vmax: Maximum overload voltage　　Imax: Maximum overload current　　Rmin: minimum resistance (25 ℃)　　Rmax: Maximum resistance (25 ℃)　　Self recovery fuse application　　The self recovery fuse is connected in series in the DC/AC power circuit. DIP direct insertion or SMD surface mount can be selected PPTC has no positive or negative polarity. As PPTC is in a protected state and has a high surface temperature, it should be installed in a ventilated state. High temperature sensitive components should not come into direct contact with PPTC　　Application scope:　　Application of Self Recovery Fuses in ADSL Devices　　Application of Self Recovery Fuses in Radio Products, Battery Packs, and Charger Products Overcurrent Protection in Automotive Electronics and Components　　Application of remote control electric toy cars, high-frequency and low-frequency power

October 26,2023

tv fuse blows when plugged in.The impact of fuse aging on usage

　　　　After the fuse ages, there is no danger of generating the current that should be cut off and the fuse not blowing. The aging of a fuse is equivalent to a decrease in the rated value (current) rather than an increase, resulting in the circuit being cut off at a small overload current or pulse.　　The durability test in the IEC standard is the life test, which is conducted using a DC power supply at normal temperature:　　a. Measure the voltage drop until the temperature stabilizes;　　b. 1.2 times the rated current for 1 hour and cut off the current for 15 minutes. Cycle 100 times;　　c. Measure the voltage drop after powering on for 1.5 In for 1 hour;　　d. Measure the voltage drop using the same method as A.　　Requirement: The voltage drop change before and after the test should not exceed 10%, and the identification should still be clear and distinguishable. There should be no deterioration in the end cap solder joints.

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

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Fuseless car charger, carefully burn your phone

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2023-04