温度传感器类型 2k,3k,5k 什么意思

2025-03-27 11:00:51
推荐回答(1个)
回答1:

标称阻值:2K,3K,4.7K,5K,10K

标称阻值就是电阻器表面所标的阻值。为了便于生产,同时考虑的能够满足实际使用的需要,国家规定了一系列数值作为产品的标准,这一系列值就是电阻的标称系列值。

大多数电阻上,都标有电阻的数值,这就是电阻的标称阻值。电阻的标称阻值,往往和它的实际阻值不完全相符。有的阻值大一些,有的阻值小一些。电阻的实际阻值和标称阻值的偏差,除以标称阻值所得的百分数,叫做电阻的误差。不同的电路对电阻的误差有不同的要求。一般电子电路,采用Ⅰ级或者Ⅱ级就可以了。在电路中,电阻的阻值,一般都标注标称值。如果不是标称值,可以根据电路要求,选择和它相近的标称电阻。

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