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September 12,2023

Recoverable fuse certification and its application scope

　　　　The quality and safety certifications for recoverable fuses include UL from the United States, CSA from Canada, CE from the European Union, VDE and T ü V from Germany, KC from South Korea, PSE from Japan, CCC and CQC from China. At the same time, there are ROHS reports and RECH reports registered in these certifications for the restoration of fuse environmental protection testing.　　With the continuous development of China's electronic industry, the fuse industry has also achieved great development, and the application range of recoverable fuses has become increasingly wide. Due to the recoverability of recoverable fuses, many protective components of electronic circuit boards will prioritize the use of recoverable fuses.　　The characteristics of recoverable insurance are: no polarity, small impedance, installation orientation, and can be connected in series in the protected electrical circuit. It is used for DC or AC power supply.　　The application scope of recoverable fuses in four

August 19,2023

What is the function of the resistance of a fuse?ceramic fuse blown

　　　　1、 What is fuse resistance?　　Resistors and fuses are similar in material and construction, while fuse type resistors serve both functions and can be used as resistors to protect machine equipment in case of abnormal current. Due to its dual function, the cost is reduced accordingly. Fuse resistors can be divided into: metal film fuse resistors, fuse type wound resistors, and fuse type cement resistors. There are several types of power: 1/4W, 1/2W, 1W, and 2W. As the power increases, the appearance size of the product will continue to increase.　　1.25A fuse resistance　　2、 The function of fuse resistance　　Resistors and fuses are similar in material and construction, while fuse type resistors serve both functions and can be used as resistors to protect machine equipment in case of abnormal current. Usually, the resistance of a fuse is significantly higher than that of an equally long wire, so that it can protect the circuit. If the current or voltage exceeds the rated value, the fuse w

September 20,2023

The following are the relevant issues that self recovery fuses can solve in security equipment.air conditioner fuse box outside

　　　　1. Self recovery fuses are used in conjunction with lightning protection components at the power input end for lightning protection and overcurrent protection applications: In this application, the main purpose is to avoid overvoltage damage to related equipment caused by power voltage fluctuations and lightning current interference. (Related reading: What are the application fields of self recovery fuses?)　　2. The application of self recovery fuses in multi branch power supply systems with a single power supply: In this application, it can solve the problem of the entire system being paralyzed due to damage to a single device. In this system, WHPTC can solve the problem of one device (such as a single user in a building intercom) being short circuited, which prevents the entire system from working properly. The ultimate goal is to timely protect and isolate faulty equipment from the system when a short circuit occurs, without affecting the normal operation of other devices. It can

September 16,2023

The Development History of Fuses.fast blow or slow blow fuse for multimeter

　　　　In the 1880s, since Edison invented the light bulb and failed countless experiments on tungsten wire, it also opened up the development history of fuses. The success of light bulbs has also driven the development of fuses. With the development of society and the increasing strength of electrical appliances, the fuse industry has also experienced rapid development.　　In daily life, the widespread application of the electronic age has led to the emergence of various types of electrical designs, with changes in both appearance and circuit structure. Therefore, the requirements for fuses are also greatly different, with modifications and upgrades made in terms of appearance/size/installation form/material/structure/specification/characteristics/application, all in order to better apply them in circuits, The development of these small fuses has gone through four revolutionary innovation milestones.　　Due to slight differences in the development of industries and environmental conditions a

July 07,2023

Rated current of fuse melt.how to test a car fuse with a multimeter

　　　　1. When protecting smooth loads without starting process, such as lighting circuits, resistors, electric furnaces, etc., the rated current of the melt is slightly greater than or equal to the rated current in the load circuit.　　2. The melt current of a single motor that operates for a long time can be selected based on the maximum starting current or according to the following formula:　　IRN ≥ (1.5-2.5) IN　　In the formula, IRN - rated current of the melt; IN - Rated current of the motor. If the motor starts frequently, the coefficient in the formula can be appropriately increased to 3-3.5, depending on the actual situation.　　3. Protecting multiple motors that have been operating for a long time (power supply main)　　IRN ≥ (1.5-2.5) IN max+ Σ IN　　IN max - The rated current of a single motor with the maximum capacity. Σ In other words, the sum of the rated current of the motor.

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Fuseless car charger, carefully burn your phone

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2023-04