A strain gauge with an unstressed resistance of \(120 \Omega\) is used in a bridge as shown in Figure P4=79. The reference voltage is +25  \(\mathrm{V}\). When fully stressed the resistance of the strain gauge is \(\mathbf{1 2 0 . 1}\) \(\Omega\). There is a need to design an instrumentation amplifier as shown in Figure P4=79. so that the output will range from o V for no strain to \(8 \mathrm{~V}\) for maximum strain. This output will eventually be sent to an ADC so that the data can be processed. Design the amplifier and verify your results using Multisim.

Transcribed Image Text:

RGI www +VREF ww RA + VTR RG2+AR RB www RA=RB=RGI=RG2 ww R R ww R ww R ww KR M KR ww + VO