blob: 7cc127ac01df088ca56d02ee8571d27d879a1950 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
//Example 2.13(a)
clear;
clc;
R0=100;//Data taken from Example 2.11
alpha=0.00392;//Data taken from Example 2.11
Vref=15;
P=0.2*10^(-3);
i=(P/R0)^(0.5)-(0.41*10^(-3));
pV=0.05;
Vrefc=pV*Vref+0.25;
Vrefr=Vref-Vrefc;
R3=2/(2*i);
//R0+R1+(R2/2)=Vrefr/i;
Rtot=Vrefr/i;
p=0.01;
R2=(2*p*Rtot)+221.1748472;//220 ohms are added to be on the safe side
R1=(Rtot-(R2/2)-R0)+108.15494;//Tolerance 1%
vO=9.97;//Data from Example 2.12
R1u=R1+(R2/2);
dT=1;//obtained from Example 2.12
d2=alpha*dT;
vO=0.1;//Sensitivity (Refer Example 2.12)
Anum=vO*(2+(R1u/R0)+(R0/R1u));
Aden=Vrefr*d2;
A=Anum/Aden;//Overall Gain by using Eq.2.47
printf("Designed Circuit for Calibration :");
printf("\nR1=%.1f kohms",R1*10^(-3));
printf("\nR2=%.f ohms",R2);
printf("\nR3=%.f kohms",R3*10^(-3));
printf("\nA=%.1f V/V",A);
|