Problem 1:
Using two RTD sensors [Rs=100(1+0,0001T)Ω], design a passive conditioning bridge circuit for an electronic temperature meter with range of 0-1volt for a temperature of 0-100°C.
1- Derive the output voltage and calculate it at 50°C.
2- Discus the linearity of this circuit.
3- Complete the last design to give an alarm for temperature degrees inside the range [40-60°C].
Problem 2:
Design an appropriate conditioning bridge circuit for an electronic relative humidity meter [0,100%]. Use a resistive humidity sensor whose transfer function is shown in Figure 1.
Figure 1
100%
85K
Rc
H %
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