Shunt Calibration for Dummies; a Reference Guide - Interface Force
Shunt Calibration for Dummies; a Reference Guide - Interface Force
Shunt Calibration for Dummies; a Reference Guide - Interface Force
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16. Is There Reason to Prefer Any<br />
Particular Leg of the Bridge to <strong>Shunt</strong> ?<br />
• Probably not.<br />
• In terms of stability and repeatability, all legs are<br />
contributing equally to a shunt measurement.<br />
• R5 and R6 contribute equally to Vs <strong>for</strong> shunt<br />
measurement on any leg regardless of their values.<br />
Remember paragraph 6 !<br />
Vs<br />
≈<br />
250<br />
Rs<br />
+ 0.<br />
5<br />
Rb<br />
⎛ R6<br />
+ R5<br />
⎞⎛<br />
R6<br />
− R5<br />
⎜1−<br />
⎟⎜1<br />
+<br />
⎝ 4Rs<br />
⎠⎝<br />
R6<br />
+ R5<br />
+ Rb<br />
⎞<br />
⎟<br />
⎠<br />
30
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