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发表于 2019-10-11 19:00:41
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1、惠斯通电桥也叫做全桥,它的一半就叫做半桥,别告诉我你不知道有半桥这个玩意
2、自平衡桥是一种半桥
3、note 部分我看了半天都没有“这个和桥没关系”的说法,如果有请指出具体是哪句哪个单词
note 全文:
Note: In practice, the coniguration of the auto-balancing bridge differs for each type of instrument. Generally, an LCR meter, in a low frequency range typically below 100 kHz, employs a simple operational ampliier for its I-V converter. This type of instrument has a disadvantage in accuracy at high frequencies because of performance limits of the ampliier. Wideband LCR meters and impedance analyzers employ the I-V converter consisting of sophisticated null detector, phase detector, integrator (loop ilter), and vector modulator to ensure a high accuracy for a broad frequency range over 1 MHz. This type of instrument can attain to a maximum frequency of 120 MHz.
实际上的自平衡桥布局因具体仪器而异,通常的 LCR 表之类低于 100kHZ 的用简单的运放作为 IV 转换器,这种仪器在高频上的精度不太好,因为运放的性能有限。宽带 LCR 表和阻抗分析仪用由精密检零器、相位检测器、积分器和矢量调制器构成的 IV 转换器来保证到 1MHZ 以上的精度...
这哪里说了和桥没关系来着?
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