如何依据检流计指针的偏转变化来调节比较臂使电桥平衡 在电桥平衡的调节过程中,如何依据检流计指针的偏转变化来调节比...
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设四个桥臂电阻分别为R1 R2 R3 R4有R1/R2=R3/R4
一般选R3 R4为相等的定制电阻
R2为可调电阻，调节R2阻值当检流计指针指0时电桥平衡
检流计右偏则调小R0,左偏调大
绛旓細鏈塕1/R2=R3/R4 涓鑸塕3 R4涓虹浉绛夌殑瀹氬埗鐢甸樆 R2涓哄彲璋冪數闃,璋冭妭R2闃诲煎綋妫娴佽鎸囬拡鎸0鏃剁數妗ュ钩琛
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