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Basic Wheatstone Full Bridge Circuit
05-04-2017, 12:45 PM (This post was last modified: 05-04-2017 01:01 PM by Vtile.)
Post: #6
RE: Basic Wheatstone Full Bridge Circuit
Here is Wheatstone bridge with 5 Resistors, where the measuring devices resistance is taken account when calculating e0. Hopefully I (or Xcas) didn't make any silly mistakes.

\[Ue0=-\mathrm{Rb3}\cdot U \frac{\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rx}}{((\mathrm​{Rb1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}) \frac{\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rx}}{\mathrm{R​b1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}+\mathrm{R​x}}+\mathrm{Rx}) (\mathrm{Rb1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}+\mathrm{R​x})}+\mathrm{Rx}\cdot U \frac{\mathrm{Rb1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}}{((\mathr​m{Rb1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}) \frac{\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rx}}{\mathrm{R​b1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}+\mathrm{R​x}}+\mathrm{Rx}) (\mathrm{Rb1}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb2}\cdot \frac{\mathrm{Rm}}{\mathrm{Rb1}+\mathrm{Rb2}+\mathrm{Rm}}+\mathrm{Rb3}+\mathrm{R​x})}\]

   


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RE: Basic Wheatstone Full Bridge Circuit - Vtile - 05-04-2017 12:45 PM



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