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您好,与我的其他帖子类似,我还有一台Agilent U1731C LCR仪表,我想用它来测量永磁发电机的绕组电阻。
我已经用另一个钳形表检查了电阻,知道它是~5.4欧姆。当我用U1731C测量它时(电阻模式),电阻值似乎取决于测量频率(并且总是大于实际值) 抵抗性)。 此外,当我将发电机移动到新的静态位置(从而改变磁场)时,电阻值也会发生变化。我做错了什么?谢谢,Alan.ps - 请看我的其他帖子 以上来自于谷歌翻译 以下为原文 Hi there, Similar to my other post, I also have an Agilent U1731C LCR meter which I want to use to measure the winding resistance of a permanent magnet generator. I've already checked the resistance using another clamp meter and know it is ~5.4ohm. When I measure it with the U1731C (on resistance mode) the value of resistance seems to depend upon the measurement frequency (and is always greater than the actual resistance). Furthermore, when I move the generator to a new static position (thereby changing the magnetic field) the resistance value also changes. What am I doing wrong? Thanks, Alan. ps - please see my other post |
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“不了解LCR仪表的功能。”您的信息将解释为什么我无法测量直流电阻,但无法解释为什么电感和电阻(因此阻抗)的值会根据磁场的强度而变化。他们不会
身体变化。 无论如何,我已经把仪表送回来了,而是得到了稍贵的仪表(U1733C),它有一个DCR模式。谢谢你的回复! 以上来自于谷歌翻译 以下为原文 " Your information would explain why I cannot measure the dc resistance, however would not explain why the values of inductance and resistance (therefore impedance) change depending on the strength of the magnetic field. They don't physically change. Regardless, I've sent the meter back and instead got the slightly more expensive meter (U1733C) which has a DCR mode. Thank you for reply! |
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