"Pulse current" is nothing new. Usually, when we start the household appliances of TV or refrigerator, we will produce a great current, but this great current only exists for a moment. But the current is very high. His destructive power is also quite strong, and he often breaks down products such as resistors and capacitors. If we use self-recovery fuses to protect these pulse circuits, will it affect?
Such as impulse current, surge current, starting current and circuit transient value. If a disposable fuse is used, the main fuse is needed to blow the fuse quickly. Whether the surge will blow the fuse instantly when starting? Corresponding to self-recovery fuse, it is basically unnecessary to consider.
Especially the plug-in self-recovery fuse need not be considered. Because the surge usually exists for several milliseconds, it disappears without affecting the self-recovery fuse. However, when choosing the SMD fuse for protection, it should be noted that the SMD fuse has limited compression and current resistance due to its small size. If the circuit pulse is huge and exists for a long time, it may be broken down, causing the circuit to open and fail to work normally.
