描述
为了达到这一效果，通常将可变电阻滑轨定置在传感器的固定部位，通过滑片在滑轨上的位移来测量不同的阻值。传感器滑轨连接稳态直流电压，允许流过微安培的小电流，滑片和始端之间的电压，与滑片移动的长度成正比。将传感器用作分压器可最大限度降低对滑轨总阻值精确性的要求，因为由温度变化引起的阻值变化不会影响到测量结果。
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