Determine the value of R_{\chi} in the balanced bridge shown in Figure 7-47.
Question 7.17: Determine the value of Rx in the balanced bridge shown in Fi...
The scale factor is
\frac{R_{2}}{R_{4}}= \frac{150 \ \Omega }{100 \ \Omega } = 1.5The bridge is balanced (V_{OUT} =0 V) when R_{V} is set at 1200 Ω, so the unknown resistance is
R_{\chi }= R_{V}\left(\frac{R_{2}}{R_{4}} \right)= \left(1200 \ \Omega \right) \left(1.5\right) = 1800 \ \OmegaRelated Answered Questions
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