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　　　　1、 Understand ceramic temperature fuses　　Ceramic temperature fuse is a protective component made of ceramic material, with high thermal response capability. Its working principle is to quickly cut off the current when the circuit temperature rises to the set value through the characteristics of ceramic materials, thus protecting the circuit and equipment.　　2、 The advantages of ceramic temperature fuses　　Stable and reliable: Ceramic temperature fuses are made of high-quality ceramic materials, which have high stability and reliability, and can maintain stable protection performance during long-term use.　　High temperature triggering: Ceramic temperature fuses use ceramic materials that are very sensitive to high temperatures. When the circuit temperature exceeds the set value, the fuse will immediately cut off the current to avoid damage to the circuit and equipment caused by excessive temperature.　　Safety protection: Ceramic temperature fuses can quickly respond and cut off current,

November 08,2023

fast blow or slow blow fuse for multimeter.What are the standard requirements for self restoring fuse technology?

　　　　Self recovery fuse is a type of overcurrent electronic protection component, which is made by mixing conductive particle materials with polymer organic polymers under high pressure, high temperature, and vulcanization reaction conditions, and processed through special processes. What are the standard requirements for self restoring fuse technology? 1. The rated zero power resistance PPTC thermistor should be packaged in different levels according to the zero power resistance, and the resistance range should be indicated on the outer packaging. After the withstand voltage and current resistance tests, the change rate of the resistance before each group of samples is extremely poor δ| After Ri - Before Ri - (After Rj - Before Rj)/Before Rj|　　2. The PTC effect refers to a material with a Positive Temperature Coefficient (PTC) effect, which means that the resistance of the material increases with increasing temperature. Most metal materials have the PTC effect. In these materials, the

July 06,2023

Fuse related instructions.fast acting fuse is used for protection against

　　　　1. When operating at a normal operating current of 25 ℃, the current rating of the fuse should usually be reduced by 25% to avoid harmful blowing. Most traditional fuses use materials with lower melting temperatures. Therefore, this type of fuse is relatively sensitive to changes in ambient temperature. For example, a fuse with a current rating of 10A is usually not recommended to operate at an ambient temperature of 25 ℃ and a current greater than 7.5A.　　2. The voltage rating of the fuse must be equal to or greater than the effective circuit voltage. The general standard voltage rating series are 32V, 125V, 250V, and 600V.　　3. The resistance of a resistor fuse is not important in the entire circuit. Since the resistance of a fuse with an amperage less than 1 is only a few ohms, this problem should be considered when using a fuse in a low-voltage circuit. Most fuses are made of materials with a positive temperature coefficient, so there are two types of resistors: cold resistance a

November 07,2023

eve temperature balancing mattress protector.Principles for selecting fuses and fuses

　　　　1. Select the model of the fuse according to the circuit requirements and installation conditions. For circuits with small capacity, choose semi enclosed or unfilled enclosed; The choice for high short-circuit current is the enclosed type with fillers; Select fast fuses for semiconductor component protection.　　2. Select the rated voltage of the fuse according to the line voltage.　　3. Select the rated current of the fuse according to the load characteristics.　　4. The selection of different levels of melts requires mutual coordination, with the latter level being smaller than the previous level. The current on the main switch and each branch line is different, and the selection of fuses is also different. If a short circuit occurs in the circuit, the 15A and 25A fuses will fuse simultaneously, and the protection characteristics will lose selectivity. Therefore, only by maintaining a 2-3 level difference between the main gate and the branch can such a phenomenon not occur. If the low-

September 22,2023

Fuses

　　　　Fuses (patch type fuses), also known as fuses, as the name suggests, are used to protect circuit components. When the current exceeds the specified range of the electrical appliance, the fuse will heat up and blow, thereby achieving the purpose of cutting off the current and protecting the electrical appliance. Supplementary knowledge on purchasing chip type fuses: 1. The working current of the selected chip type fuse should not exceed 75% of the rated current of the fuse. 2. The impact resistance of patch fuses is much smaller, so when purchasing patch fuses, special attention should be paid to pulse, impulse current, surge current, starting current, and circuit transient values. 3. Confirm the size of the circuit overload current that the patch fuse needs to pass through and the minimum and maximum duration of the overload current. 4. Another characteristic of patch type fuses is that by installing fuses with excessive internal resistance in certain circuits, they can affect the

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Fuseless car charger, carefully burn your phone

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2023-04