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电阻温度系数是精密电阻合金最重要的电学性能之一,在高精度的仪表上,对电阻温度系数的要求极为严格,通常要求在使用温度区间内,阻值不发生变化,所以精密电阻的质量,主要是控制温度系数。本文主要分析了在绕制线圈电阻时,选取不同材料的骨架(包括无骨架及加缓冲层后的骨架)、以及骨架直径大小不同时对电阻温度系数的影响。
Resistance temperature coefficient of precision resistance alloy is one of the most important electrical properties of high precision instruments, the temperature coefficient of resistance is extremely strict, usually require the use of temperature range, the resistance does not change, so the quality of precision resistance , Mainly to control the temperature coefficient. In this paper, we mainly analyze the influence of different material skeletons (including the skeleton without skeleton and buffer layer) and the temperature coefficient of resistance when winding the coil resistance.