The higher the resistivity of the resistance wire, the greater the obstacle to the current.In physical theory, the resistance wire is the role of protecting the circuit. If the resistance wire in the circuit is broken, it will cause the entire circuit to lose protection.
Resistance wire material
Resistance specification
Resist wire price
Now the market is generally sold for about 5-8 yuan.
The role of resistance wire
First of all, the resistance wire is divided into many types, and the role of different resistors is different.Electric heating wire is commonly used in the rice cooker. By conducting heat and heat, it has a role in assisting heating on the inner biliary of the rice cooker. This is the three -dimensional three -dimensional heating mode fried on the market.The advantages of the three -dimensional heating and single heating: The use of three -dimensional heating is not easy to produce condensate water after cooking, and there will be no phenomenon of condensed water droplets and white rice.The other is the insurance resistance wire. The insurance resistance has the function of normal resistance under normal circumstances. Once the circuit fails, it exceeds its rated power, and it will break the circuit within the specified time to achieve the role of protecting other components.Insurance resistance is divided into two types: irreplaceable and repairable types.The dual effects of fuses and resistors are played in the circuit diagram, which are mainly used in the output circuit of the power circuit output and the secondary power supply.They are generally low -resistance (a few ohms to tens of ohm), and small power (1/8 ~ 1W). The function is to melt in time when overcurrent to protect other components in the circuit.

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