Blog

    Enameled wire is divided into two types: CP enameled wire and copper enameled wire. The lead for the thermistor temperature sensor can be either CP enameled wire or copper enameled wire. The advantages of copper enameled wire over CP enameled wire are mainly non-magnetic and strong ability to prevent electromagnetic interference. , in wireless charging and in situations with relatively high operating frequencies, using CP enameled wire as the temperature sensor lead will cause many interference problems. In this case, copper enameled wire needs to be used; in addition, copper enameled wire has a wide range of market applications and production processes. Mature, and the application fields of CP enameled wire are very niche. The manufacturers are small in scale, and their R&D and management capabilities are not strong. The withstand voltage, insulation and pinhole rate of CP enameled wire cannot be compared with copper enameled wire. Therefore, in In high-voltage, high-insulation, high-temperature-resistant, and high-frequency situations, copper enameled wire has obvious advantages.

    The advantage of CP enameled wire is that the cost is relatively low; in general, the resistance of the thermistor temperature sensor is very large, including: several KΩ, dozens of KΩ, hundreds of KΩ, even the resistivity and internal resistance of CP enameled wire are much larger For copper enameled wire, because the thermistor resistance is large, an internal resistance of a few ohms will not cause measurement errors, so using CP enameled wire as the lead for the thermistor temperature sensor will not cause measurement errors due to excessive internal resistance; CP Another advantage of enameled wire is that its thermal conductivity is relatively small compared to copper enameled wire. When used as a temperature sensor, the temperature conduction error caused by the heat conduction of the lead is smaller than that of copper enameled wire, but this difference is mainly reflected in the high temperature within ±0.2°C. For rapid measurement of accurate temperature, such as thermistors used in electronic thermometers, etc., they have no effect on general accuracy of temperature measurement. The above are the advantages and disadvantages of copper enameled wire and CP enameled wire.