Chapter9-Oscillators

Ex1-pg173

In [1]:
##Ex:9.1
import math
C=10.*10**-9;
R=10000.;
f=(1./(2.*math.pi*math.sqrt (6.)*C*R));
print'%s %.2f %s'%("The freq of oscillation = ",f," Hz");

The freq of oscillation =  649.75  Hz

Ex2-pg173

In [2]:
##Ex:9.2
import math
r1=1000.;
r2=1000.;
c=100.*10**-9;
f=(1./(2.*math.pi*c*r1));
print'%s %.2f %s'%("The freq of oscillation at 1 kohm= ",f," Hz");
R1=6000.;
R2=6000.;
F=(1/(2.*math.pi*c*R1));
print'%s %.2f %s'%("\nThe freq of oscillation at 6 kohm= ",F," Hz");

The freq of oscillation at 1 kohm=  1591.55  Hz

The freq of oscillation at 6 kohm=  265.26  Hz

Ex3-pg176

In [3]:
##Ex:9.3
import math
f=1000.;
t=1./f;
C=10.*10**-9;
R=t/(1.4*C);
print'%s %.2f %s'%("R= ",R/1000," kohm");

R=  71.43  kohm