{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 12:Modulating,Demodulating and frequency Changing with the multiplier"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.1 Page No 332"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"#(a)\n",
"V=10.0\n",
"x1=10 #Polarity combination of voltages\n",
"y1=10 #V\n",
"#(b)\n",
"x2=-10 #V, 2nd combination\n",
"y2=10 #V\n",
"#(c)\n",
"x3=10 #V\n",
"y3=-10 #V\n",
"#(d)\n",
"x4=-10 #V\n",
"y4=-10 #V\n",
"\n",
"\n",
"#Calculation\n",
"Vo1=x1*y1/V\n",
"Vo2=x2*y2/V\n",
"Vo3=x3*y3/V\n",
"Vo4=x4*y4/V\n",
"\n",
"#Result\n",
"print\"The values of Vo are\",Vo1,\"V ,\",Vo2,\"V ,\",Vo3,\"V ,\",Vo4,\"V\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The values of Vo are 10.0 V , -10.0 V , -10.0 V , 10.0 V\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.2 Page No 334"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Ei1=10 #V\n",
"Ei2=-10 #V\n",
"\n",
"#Calculation\n",
"Vo1=Ei1**2/Ei1\n",
"Vo2=Ei2**2/Ei1\n",
"\n",
"#Reult\n",
"print\"(a)The value of Vo is\",Vo1,\"V\"\n",
"print\"(b)The value of Vo is\",Vo2,\"V\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)The value of Vo is 10 V\n",
"(b)The value of Vo is 10 V\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.4 Page No 336"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Ei1=10 #V\n",
"f1=1 #KHz\n",
"Ei2=2 #V\n",
"f1=2.5 #KHz\n",
"\n",
"#Calculation\n",
"dcvalue=Ei1**2/20.0\n",
"pac=Ei1**2/20.0\n",
"\n",
"\n",
"#(b)\n",
"dcvalue_=Ei2**2/20.0\n",
"pac_=Ei2**2/20.0\n",
"\n",
"#Result\n",
"print\"(a)The DC and AC output voltage are\",dcvalue,\"V,\",pac,\"V at 2 KHz\"\n",
"print\"(b)The DC and AC output voltage are\",dcvalue_,\"V,\",pac_,\"V at 5 KHz\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a)The DC and AC output voltage are 5.0 V, 5.0 V at 2 KHz\n",
"(b)The DC and AC output voltage are 0.2 V, 0.2 V at 5 KHz\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.5 Page No 339"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Exp=5 #V\n",
"Eyp=5 #V\n",
"Vodc=1.25 #DC component of Vo\n",
"\n",
"#calculation\n",
"import math\n",
"theta=math.acos(20*Vodc/(Exp*Eyp))\n",
"\n",
"#Result\n",
"print\"The angle is\",theta,\"degree\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The angle is 0.0 degree\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.6 Page No 339"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Vo=0 #AVerage value of DC component\n",
"\n",
"#calculation\n",
"import math\n",
"theta=math.acos(Vo)\n",
"\n",
"#Result\n",
"print\"The angle is\",round(theta*180/3.14,0),\"degree\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The angle is 90.0 degree\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.7 Page No 339"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"theta1=30 #degree\n",
"theta2=45 #degree\n",
"theta3=60 #degree\n",
"theta4=0 #Degree from example 12.5 \n",
"theta5=90 #Degree from example 12.6\n",
"\n",
"#Calculation\n",
"import math\n",
"Vodc1=math.cos(theta1*3.14/180.0)\n",
"Vodc2=math.cos(theta2*3.14/180.0)\n",
"Vodc3=math.cos(theta3*3.14/180.0)\n",
"Vodc4=math.cos(theta4*3.14/180.0)\n",
"Vodc5=math.cos(theta5*3.14/180.0)\n",
"\n",
"\n",
"#Result\n",
"print\"The Output Dc voltages are\",round(Vodc1,3),\"V ,\",round(Vodc2,3),\"V ,\",round(Vodc3,3),\"V ,\",round(Vodc4,3),\"V ,\",round(Vodc5,3),\"V ,\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The Output Dc voltages are 0.866 V , 0.707 V , 0.5 V , 1.0 V , 0.001 V ,\n"
]
}
],
"prompt_number": 16
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.8 Page No 340"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#GIven\n",
"theta1=90 #degree\n",
"theta2=120 #degree\n",
"theta3=135 #degree\n",
"theta4=150 #degree\n",
"theta5=180 #degree\n",
"\n",
"#Calculation\n",
"import math\n",
"Vodc1=math.cos(theta1*3.14/180.0)\n",
"Vodc2=math.cos(theta2)\n",
"Vodc3=math.cos(theta3)\n",
"Vodc4=math.cos(theta4)\n",
"Vodc5=math.cos(theta5)\n",
"\n",
"#Result\n",
"print\"The Voltages are\",round(Vodc1,3),\"V ,\",round(Vodc2,3),\"V \",round(Vodc3,3),\"V \",round(Vodc4,3),\"V \",round(Vodc5,3),\"V \"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The Voltages are 0.001 V , 0.814 V -0.996 V 0.699 V -0.598 V \n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 12.10 Page No 349"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Ecp=5 #V, Voltage\n",
"fc=10000 #Hz frequency\n",
"Em=5 #V peak voltage\n",
"fm=1000 #Hz frequency\n",
"\n",
"#Calculation\n",
"Vc=Em*Ecp/(10.0) #The carrier term peak voltage\n",
"Vp=Vc #product term Peak voltage\n",
"Vs=Em*Ecp/(20.0) #The side term peak voltagec\n",
"\n",
"\n",
"#Result\n",
"print\"The carrier term peak voltage is\",Vc,\"V\"\n",
"print\"The product term peak voltage is\",Vp,\"V\"\n",
"print\"The side term peak voltage is\",Vs,\"V\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The carrier term peak voltage is 2.5 V\n",
"The product term peak voltage is 2.5 V\n",
"The side term peak voltage is 1.25 V\n"
]
}
],
"prompt_number": 27
}
],
"metadata": {}
}
]
}