Most people are very familiar with the fuses in our daily lives and manufacturing. There is a fuse called a patch fuse to be a somewhat strange for ordinary people. The patch fuse is a new variety of technological content in small fuse industry. The precautions used by the patch fuses and the ordinary fuses are still a little different. Today, let the small series and you will introduce the precautions for the use of the patch fuse you may not know!
In our daily lives and manufacturing, most people are very familiar with fuses. There is a fuse called a patch fuse to be a somewhat strange for ordinary people. The patch fuse is a new variety of technological content in small fuse industry. The precautions used by the patch fuses and the ordinary fuses are still a little different. Today, let the small series and you will introduce the precautions for the use of the patch fuse you may not know!
Patch fuse application precautions:
1, the current of the maintenance circuit is maintained. When the selection requires determination of the normal current of the circuit to select the corresponding type of patch fuse. Through the operating current of the fuse, the current of the fuse should not exceed 75% of the additional current of the fuse.
2, pulse, impact current, surge current, start current, and circuit transient value. The impact of the patch fuse can be much smaller than a glass tube fuse or other larger fuse that is much smaller than the same additional current.
3, the overload current of the circuitry and the shortest and longest time of overload current. The basic requirements for the fuse should not be broken, and the time division must be interrupted in the appropriate time.
4, the resistance of the patch fuse has a certain impact on certain circuits: If the internal resistance is too large, the fuse device is in some circuits, it will affect the number of systems. , Make the circuit not working properly.
5, the operating ambient temperature of the fuse: When the patch fuse is applied to portable equipment, it is necessary to consider the temperature rise of the fuse, which is considered to consider the reduction of the additional current of the fuse. The ambient temperature at the time of operation should be within the specified operating temperature range, and when the ambient temperature around the fuse beyond 25 ° C, the temperature reduction curve should be used to use.
6, an external voltage applied to the fuse. General patch fuses are applied to portable equipment, circuit operationsThe voltage is generally not high, as long as the additional voltage of the patch fuse is higher than the circuit operation voltage, you can use it.
7, the product is large. Since the patch fuse generally uses on a relatively highly integrated product, it is generally required to pay attention to the corresponding package to be applied to the protected circuit.
8, the certification of the product. For example, it is exported to North America, and there must be UL or CSA certification. Now exported to Europe’s products also demanded that the EU’s RoHS directive, which is to generally say environmental certification such as SGS.
The above is the full content of today’s precautions for the use of patch fuses. The application of the patch fuse is also very wide, mainly used in digital cameras, notebooks, mobile phones, etc., so we pay attention to the precautions when purchasing patch fuses! Want to know more about the patch fuse? Come and pay attention to us!
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