What is the resistance value of the fuse? fuse refers to an electrical appliance that fuses the melt and breaks the circuit with its own heat when the current exceeds the specified value. The fuse is based on the current exceeds the specified value for a period of time, with its own heat to melt, so that the circuit is disconnected; A current protector is made by using this principle. Fuse is widely used in high and low voltage distribution system and control system and electrical equipment, as a short circuit and overcurrent protector, is one of the most widely used protection devices.
The resistance value of the fuse is: 0.2ohm-10K.
Fuse resistance value calculation formula:
For digital circuits, it is generally the requirements of typical circuits or empirical values such as pull resistance, pull down resistance, etc. Specific 1W10R resistance I=(W/R)^1/2=316mA, that is, the maximum charging current of this circuit can not exceed 300.
If the fuse is 100A, the resistance is about 5mΩ, the smaller the current, the greater the resistance.