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November 01,2023

Selection of Fuses in Small Home Appliance PCB Board

　　　　The fuses commonly used in PCB boards of small household appliances use self recovery fuses to protect the circuit. The selection of self recovery fuses in small household appliances can be divided into the following steps:　　Firstly, determine the working voltage of the self recovery fuse;　　2. Based on the actual average operation of different products, determine whether the self recovery fuse is the inactive current;　　3. The maximum current ratio, temperature, and other parameters of household small appliances in actual work, as well as the time required for self recovery fuse self correction (self recovery fuse action current amplification or reduction);　　4. Revise it to an actual experiment and ensure that there is no false protection work, but it is necessary to self recover the fuse parameters within the specified time and protect the motor from stalling. The change in the thermistor of a small motor is an easy choice, but after repeated experiments, the thermal resistance of

September 19,2023

Application of SMD fuses in independent equipment.samsung tv ceramic fuse replacement

　　　　SMD fuse, also known as SMD chip fuse, is a type of SMD packaged fuse that has a wide range of applications due to its small size and chip type. Its application in some independent devices is gradually playing an irreplaceable role.　　The scope of battery powered equipment has expanded from powerful hand tools for craftsmen to sensors for housing supervision and even medical assistance services. The security of such devices faces enormous challenges. To ensure safe operation of these independent devices, JDTFUSE offers two SMD fuses with low power consumption and high tolerance tripping time.　　In 2010, billions of lithium-ion batteries were manufactured worldwide. At the same time, the application fields of these products are also constantly expanding. Currently, battery powered devices are ubiquitous. Although these convenient tools are very practical, they have always been a source of danger. This type of equipment is prone to fire, and excessive current can also damage the circui

August 16,2023

Resistive Type 251 Quick Break Fuse.smd fuse letter codes

　　　　The appearance dimensions of the 251 series fuses are available in multiple models: 2 * 6mm, 2.4 * 7mm, 3 * 9mm, and 2.5 * 6mm.　　251 series axial lead fuse, size 2.4 × 7mm, small in size, suitable for various small electrical appliances.　　The rated voltage range is 125V~250V, and the rated current range is 125mA~6.3A.　　The appearance of the 251 series resistive fuses is composed of brass nickel plated copper caps and leads, ceramic tubes, etc. The product body colors are green and yellow, among which the appearance of 2 * 6mm and 3 * 9mm resistive fuses is marked with a color ring to distinguish the size of the current. It is a special fast break fuse.　　The 251 series resistive fuses have a wide range of applications in the industry and circuits, and can be used in current supplies, switching power supplies, computers, chargers, telephones, household appliances, communication products, various instruments and electronic components, motor products, and various small household applia

October 24,2023

fast blow fuse characteristics.What is the working principle of a fuse?

　　　　I still remember when I was studying electronics and electrical appliances, and every semester when I came home from vacation, I was called by my neighbors to repair the TV. At that time, I used black and white TV sets, and the voltage was also unstable. The most damaged TV set was the fuse.　　At that time, Shenzhen fuses were ordinary glass tube fuses, and it was not very convenient to buy a fuse in rural areas. Sometimes, iron sheets or wires were used to directly connect the circuit as a fuse (I believe many people have done this before), which could still be used normally. However, this use was very unsafe, and sometimes it could damage other parts of the TV. Since then, I have been deeply impressed by this type of transparent glass tube fuse.　　Fuses, also known as fuses, are defined as "fuse links" in international standards. They are electrical components installed in a circuit to ensure safe operation of the circuit.　　Electronic products are all-encompassing, and these produc

October 27,2023

car charger fuse replacement.Essential knowledge for selecting automotive fuses

　　　　1、 The function of a fuse:　　1. Under normal circumstances, fuses play a connecting role in the circuit.　　2. Under abnormal (overload) conditions, the fuse serves as a safety protection component in the circuit, which can safely cut off and protect the circuit through its own fusing.　　2、 The working principle of a fuse:　　When a fuse is energized, the heat converted from electrical energy causes the temperature of the melt to rise. Normal working current or allowable　　When a certain overload current passes through, the heat generated is radiated to the surrounding environment through the melt and shell, and the heat dissipated through convection, conduction, and other means gradually reaches a balance with the heat generated. If the generated heat is greater than the dissipated heat, the melt temperature can increase; When the temperature reaches or exceeds the melting point of the melt, the melt melts, fuses, and cuts off the current, playing a role in safety protection of the circu

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Fuseless car charger, carefully burn your phone

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2023-04