Optical Sensors Lab
 Using Multisim, design a system using the photoconductive cell shown in the figure below to measure and display light intensity. Make the design such that 20 to 100mW/cm^{2} produces an output of 0.2 to 1.0V. What is the readout error when the intensity is 60mW/cm^{2}? Show all calculations and Multisim results.
 For the turbidity system show in Figure 2 below, two matched photoconductive cells are used in R vs. I_{L} as given in Figure 3 below. Design a signalconditioning system that outputs the deviation of the flowing system turbidity in volts and triggers an alarm if the intensity is reduced by 10% from the nominal of 15mW/cm^{2}.

Figure 2

Figure 3**PLEASE SEE ATTACHMENT**
Attachments:
 Using Multisim, design a system using the photoconductive cell shown in the figure below to measure and display light intensity. Make the design such that 20 to 100mW/cm^{2} produces an output of 0.2 to 1.0V. What is the readout error when the intensity is 60mW/cm^{2}? Show all calculations and Multisim results.
 For the turbidity system show in Figure 2 below, two matched photoconductive cells are used in R vs. I_{L} as given in Figure 3 below. Design a signalconditioning system that outputs the deviation of the flowing system turbidity in volts and triggers an alarm if the intensity is reduced by 10% from the nominal of 15mW/cm^{2}.
Figure 2
Figure 3
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