As is well known, the use of resistors is indispensable in almost any electronic circuit. However, in the process of using resistors, it is sometimes inevitable to encounter resistance heating. Do you know the principle of resistance heating? Below, the editor from Ouyou Electronics will introduce you:

Principle of Resistance Heating:

Resistance heating refers to the method of electrically heating materials by utilizing the thermal effect of current passing through a resistor. Resistance heating can be widely applied in all aspects from heating molten metals to heating food.

Resistance heating is a simple (and also very old) electric heating method that can heat metals, molten metals, or non metals with an efficiency of almost 100%, and a working temperature of up to 2000 ℃. Therefore, it can be applied to both high-temperature heating and low-temperature heating.

The traditional method of using electric heating elements embedded in the mold to heat the mold belongs to indirect resistance heating. Indirect resistance heating is the process of passing current through an electric heating element or conductive medium, such as resistance wire, thermistor (PTC), electric heating film, etc., causing the electric heating element to first generate heat. Then, the heat generated by the electric heating element is used to indirectly heat the target object through thermal conduction, convection, or radiation.

The content introduced above is the principle of resistance heating. Resistance heating provides uniform heating, high thermal efficiency, and minimal environmental pollution. The heating temperature for materials can be selected according to the heating process requirements within a wide range from room temperature to about 3000 ℃, and can be precisely controlled.