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【问】一块板上用4个AD8497接4路热电偶测温, 如下电路图

【问】我在一块板上用4个AD8497接4路热电偶测温,AD8497输出端是接到AD. 正常情况下如果我断开其中一路热电偶,其他三路的电压会有很大变化,这是为什么?

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