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//CHAPTER 4_ Motion and Dimensional Measurement
//Caption : Piezoelectric transducer
// Example 5// Page 207
g=15 //('enter the value constant g for the crystal=:')
A=%pi*((5*10^-3)^2)/4 //('enter the area of cross section of the crystal=:')
f=50 //('enter the frequency of sinusoidally varying pressure=:')
eoer=15*10^-9 // for the crystal
E=120 *10^9 // youngs modulus of elasticity
t=.003 //('enter the thichness of the crystal=:')
Kq=g*eoer*A*E/t;
printf('Charge sensitivity is %fd mC/m \n',Kq)
Ccr=eoer*A/t;
Camp=2000*10^-12;
Ccable=100*10^-12;
C=Ccr+Camp+Ccable;
Ramp=2000000 //('enter the input impedance of the amplifier')
Req=Ramp;
tou=Req*C; // time constant
// Let the amplitude ratio is given by EOP
w=2*%pi*f;
EOP=Kq*t*w*tou/(C*E*sqrt(1+(w*tou)^2))
printf('The amplitude ratio is %fd mV/V\n',EOP)
// let the phase lag be represented by phi
phi=360*atan(1/(w*tou))/(2*%pi);
printf(' The phase lag is %fd deg',phi);
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