The load of the resistance has a certain limit, that is, if the current flowing through the resistor exceeds the limit, it will burn it out, so that the resistance is open. In this sense, the resistance has a function of fuse-like fuse-that is, the circuit passs by It can cut off the current when flowing, as if it can play a role in the fuse. Therefore, some manufacturers have replaced the fuse in the original design to cheap insurance resistance in order to reduce costs, adding a little security to customers in the form.
But can the insurance resistance really play the same role in alternative fuses? The answer is obviously!
As for the security function, the fuse is guaranteed by the rated voltage, division capacity and other indicators, especially the authority must be guaranteed by the authoritative third -party security certification. Thinking about it, the protection function was insufficient, and it was difficult to ensure that it did not occur during the burning process that endangered the surroundings.
In summary, although the insurance resistance has an overcurrent action, it cannot really play the same role in the fuse.
