直流电桥与电阻测量
ChhaXCanngF--XgeDFePPD
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(10-106 ), (10 ) (107 ) 1.
1 , R1,R2,R Rx R1,R2 R AB AD BC DC AB BC AD DC
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ChhaXCanngF--XgeDFePPD
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RA 10000*0.1%+3000*0.1%+200*0.1%+4*1%+0.5*5%+0.02=13.285 R1 100000*0.1%=10 R2 1000*0.1%=1 RA A .2852 102 12 10 166.58 RA 132045 166.58
rA 0.126%
RB 8000*0.1%+900*0.1%+70*0.1%+0.8*5%+0.02=9.031
R1 10000*0.1%=1 R2 10000*0.1%=10
RB B
9.0302 102 12/10 1.351
RB 897.08 1.351
rB 0.151%
RC 4000*0.1%+300*0.1%+60*0.1%+4*0.1%+0.2*5%+0.02=4.394
R1 100*0.1%=0.1 R2 10000*0.1%=10
RC C
4.3942 102 0.12/100 0.1092
RC 43.642 0.1092
rC 0.250%
2.
ChhaXCanngF--XgeDFePPD
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RS 1 0.0464
RS 2 0.0219 RS 3 0.100
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ChhaXCanngF--XgeDFePPD
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1. R1 R2
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