Wire wound resistance is a kind of fixed resistance. The wire wound resistor is formed by winding the resistance wire on the insulating frame. The resistance wire is generally made of nickel chromium, manganese copper and other alloys with certain resistivity. The insulating skeleton is made of ceramic, plastic, metal coated with insulating layer and other materials in various shapes such as tube shape and flat shape. The resistance wire can be wound in one layer or multiple layers on the skeleton as required, or the non inductive winding method can be adopted. Winding resistance is mainly used for voltage division, voltage reduction, shunt and load resistance in AC and DC circuits such as precision instruments, telecommunication instruments and electronic equipment.
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Precision resistor refers to a resistor whose resistance value accuracy, temperature coefficient, load life, long-term stability and other indicators meet higher standards under the same resistance technology and installation mode. The long-term stability of precision resistance is a very important index, and it is meaningless to leave the high accuracy of stability.
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In recent years, the continuous drive of macro-economy has made the electronic component industry in China realize the continuous growth of output value and output with the market demand gap that needs to be filled. Compared with the active electronic component market, the lack of technological innovation has undoubtedly become an urgent need for breakthrough and improvement in the domestic electronic component industry.
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