Self recovery fuses can be divided into patch based self recovery fuses and plug-in self recovery fuses. With the increasing miniaturization of product requirements, the range of use of patch based fuses has increased. The main encapsulation of SMD self recovery fuses are: 0805, 0603, 1206, 1812, 2920, and their working principle is: The self recovery fuse is composed of specially treated polymer resin and conductive particles (Carbon Black) distributed inside. Under normal operation, the polymer resin tightly binds conductive particles outside the crystalline structure, forming a chain like conductive electrical pathway. At this time, the recoverable fuse is in a low resistance state (a), and the heat generated by the current flowing through the self recovering fuse on the circuit is small and does not change the crystal structure. When a circuit experiences a short circuit or overload, the heat generated by the large current flowing through the self recovery fuse causes the pol
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
In the circuit protection scheme, is it better to choose a self recovery fuse or a blown fuse for overcurrent protection? This issue has always been a serious issue that electronic security engineers must take seriously, and it is also one of the many questions that buyers consult with. In smart consumer electronics products (such as computers, smartphones, tablets, etc.), circuit protection design requires the use of self-healing fuses. If a blown fuse is used, it needs to be replaced every time abnormal overcurrent occurs, which is unacceptable to end users. In situations where safety needs to be prioritized or damage to other downstream circuit equipment needs to be avoided, it is better to choose a fused fuse. In case of a fault, completely cutting off the current is beneficial for fault diagnosis. So, what is the difference between a self restoring fuse and a blown fuse? Dongwo Electronics, a comprehensive manufacturer of circuit protection components, has rich practical appl
What is a fuse? This is an excellent small device that can self destruct in the event of surges or other overcurrent conditions. Why do people create such a device? The reason is very simple, that is to protect other parts of the circuit where the fuse is located. Compared to replacing the entire circuit that may be destroyed, the cost of replacing a fuse is negligible. Due to the fact that fuses are a very common and replaceable component, we believe it is necessary to provide a more in-depth introduction to the purpose, testing, and diagnostic methods of fuses, as well as to showcase various types of fuses and their different shapes and sizes Common Sense 1: How to determine if a fuse is blown? If a fuse can be removed from the circuit, the simple method to determine whether it has blown is to conduct a continuity test. Take a multimeter and select continuity or resistance settings. Next, perform a quick test on the multimeter to determine if it is working properly by touching
Fuses are a commonly used component in electrical circuits. Only with fuses can our circuits work safely and reliably. Do you know how fuses work? The core component of a fuse is a section of gold with a lower melting point As a wire, the fuse itself can also conduct electricity. Fuses are usually installed at the inlet of a circuit. When the circuit is connected, current flows through the fuse and the load, allowing the load to function normally. When the circuit is working normally, the current flowing through the fuse will not be very high, and the temperature of the fuse will not be very high. 3. Due to the fuse being connected in series at the incoming position of the circuit, as the load in the circuit increases, the current flowing through the fuse will also increase. 4. As the current flowing through the fuse increases, the temperature of the fuse will increase.
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 TV was often damaged by fuses. At that time, the fuse was a regular glass tube fuse, 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), and it 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 products that r
MB:+86 13924633629 Ms.vicky
E-mail: waimao@xcfuse.com
Factory :
XC Electronics(Shenzhen)Corp.,LTD
Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd
Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
