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{
"metadata": {
"name": "ch_7"
},
"nbformat": 2,
"worksheets": [
{
"cells": [
{
"cell_type": "markdown",
"source": [
"<h1>Chapter 7: Waveform Generators<h>"
]
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No.7.1 , Page NO: 324<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declarartion:",
"import math",
"f=300.0 #frequency in hertz",
"C=0.1*10**-6 #capacitance in farad",
"",
"#Calculations:",
"t=f*C ",
"R=1/(2*math.pi*t*math.sqrt(6)) #Calculating resistance value",
"R=R/1000 #Calculating resistance value",
"R1=22000.0 #Calculating resistance value",
"Rf=29.0*R1 #Calculating resistance value",
"Rf=Rf/1000.0 #Calculating resistance value",
"",
"#Results:",
"print('R= %.2f kohm'%R)",
"print('\\nLet R=2.2 kohm, hence R1=22 kohm')",
"print('\\nRf= %d kohm'%Rf)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"R= 2.17 kohm",
"",
"Let R=2.2 kohm, hence R1=22 kohm",
"",
"Rf= 638 kohm"
]
}
],
"prompt_number": 1
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No. 7.2, Page No: 326<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"import math",
"f=2000.0 #Frequency in hertz",
"C=0.05*10**-6 #Capacitance in farad",
"",
"#Calculations:",
"t=f*C",
"R=1/(2*math.pi*t) #Calculating resistance value",
"R=R/1000.0 #Calculating resistance value",
"R1=1800.0 #Calculating resistance value",
"Rf=2.0*R1 #Calculating resistance value",
"Rf=Rf/1000.0 #Calculating resistance value",
"",
"#Results:",
"print('R= %.3f kohm'%R)",
"print('\\nLet R=1.8 kohm')",
"print('\\nRf= %3f kohm'%Rf)",
"print('\\nStandard value Rf= 3.3 kohm')"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"R= 1.592 kohm",
"",
"Let R=1.8 kohm",
"",
"Rf= 3.600000 kohm",
"",
"Standard value Rf= 3.3 kohm"
]
}
],
"prompt_number": 4
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No.7.3, Page No: 329<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"R1=116.0*10**3 #Resistance in ohm",
"R2=100.0*10**3 #Resistance in ohm",
"Vsat=14.0 #Voltage in volt",
"",
"#Calculations:",
"# Part A",
"f=1000.0 #Frequency in hertz ",
"",
"T=1/f ",
"# As log value is approx 1",
"RC=T/2 #Calculating time constant",
"RC1=RC*1000.0 #Calculating time constant",
"",
"# Part B",
"C=0.01*10**-6 #Capacitance in farad",
"R=RC/C #Calculating resistance",
"Rn=R/1000.0 #Calculating resistance",
"",
"# Part C",
"Vmax=2*Vsat*(R2/(R1+R2)) #Calculating maximum value of differential voltage",
"",
"#Results:",
"print('RC= %.1f *10^-3 sec'%RC1)",
"print('\\nR= %d kohm'%Rn)",
"print('\\nMaximum value of differential input voltage= %.2f V'%Vmax)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"RC= 0.5 *10^-3 sec",
"",
"R= 50 kohm",
"",
"Maximum value of differential input voltage= 12.96 V"
]
}
],
"prompt_number": 3
},
{
"cell_type": "markdown",
"source": [
"<h3>Exa ple NO. 7.4,Page NO: 330<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"fo=1000.0 #Frequency in hertz",
"Vcc=12.0 #Voltage Vcc in volt",
"R1=10.0*10**3 #Resistance in ohm",
"R2=10.0*10**3 #Resistance in ohm",
"C=0.1*10**-6 #Capacitance value in farad",
"",
"#Calculations:",
"R=1/(2.2*C*fo) #Calulating resistance value",
"R=R/1000.0 #Calculating resistance value",
"",
"#Results:",
"print('R= %.3f kohm'%R)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"R= 4.545 kohm"
]
}
],
"prompt_number": 4
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No. 7.5, Page No: 334<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"R1=100.0*10**3 #Resistance in ohm",
"R3=20.0*10**3 #Resistance in ohm",
"C1=0.01*10**-6 #Capacitance in farad",
"Vsat=14.0 #Voltage in volt",
"",
"#Calculations:",
"# Part A",
"T=4*R1*R2*C1/R3 #Calculating time period",
"Tn=T*1000 #Calculating time period",
"",
"# Part B",
"f=1/T #Calculating frequency",
"",
"# Part C",
"",
"# Part D",
"Vp=R2*Vsat/R3 #Calculating peak value of the triangular wave",
"",
"#Results:",
"print('Time period T= %d ms'%Tn)",
"print('\\nfrequency f= %d Hz'%f)",
"print('\\nPeak value is +14V and -14V')",
"print('\\nTriangular wave oscillates between %d V and - %d V'%(Vp,Vp))"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Time period T= 2 ms",
"",
"frequency f= 500 Hz",
"",
"Peak value is +14V and -14V",
"",
"Triangular wave oscillates between 7 V and - 7 V"
]
}
],
"prompt_number": 2
},
{
"cell_type": "markdown",
"source": [
"<h3>Example NO. 7.6, Page No: 336<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"Ri=10.0*10**3 #Resitance in ohm",
"Vp=10.0 #Voltage in volt",
"Vref=10.0 #Voltage in volt",
"fo=200.0 #Frequency in hertz",
"C1=0.1*10**-6 #Capacitance in farad",
"Vi=2.0 #Voltage in volt",
"",
"#Calculations:",
"t=Vi/Vref ",
"f=t/(Ri*C1) #Calculating frequency",
"",
"#Result:",
"print('Frequency f= %d Hz'%f)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Frequency f= 200 Hz"
]
}
],
"prompt_number": 6
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No. 7.7, Page no: 345<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Answer in textbook is wrong",
"#Varible Declaration:",
"C=0.1*10**-6 #Capacitance in farad",
"t=1*10**-3 #time in second",
"",
"#Calculations:",
"R=t/(1.22*C) #Calculating resistance value",
"R=R/1000 #Calculating resistance value",
"",
"#Result:",
"print('R= %.1f kohm'% R)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"R= 8.2 kohm"
]
}
],
"prompt_number": 7
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No. 7.8, Page No: 351<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"D=20.0 # 20 percent #Duty cycle",
"Ton=1.0*10**-3 #On time period in seconds ",
"",
"#Calculatins:",
"Tonpoff=100.0*Ton/D #Calculating total time period ",
"Tonpoff1=Tonpoff*1000.0 #Calculating total time period",
"f=1/Tonpoff #Calculating frequency of oscillation",
"",
"#Results:",
"print('Ton + Toff= %d ms'%Tonpoff1)",
"print('\\nFrequency of oscillation= %d Hz'%f)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Ton + Toff= 5 ms",
"",
"Frequency of oscillation= 200 Hz"
]
}
],
"prompt_number": 8
},
{
"cell_type": "markdown",
"source": [
"<h3>Example No. 7.9, Page No: 351<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"D=0.7 #Duty cycle ",
"f=1000.0 #Frequency in hertz",
"",
"RB=10.0**4/(6.43/3.0) #Resistance value in ohm",
"",
"#Calculations:",
"RA=4.0*RB/2.75 #Calculating resistance value",
"RB1=RB/1000.0 #Calculating resistance value",
"RA1=RA/1000.0 #Calculating resistance value",
"",
"#Results:",
"print('RB= %.1f kohm'%RB1)",
"print('\\nRA= %.1f kohm'%RA1)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"RB= 4.7 kohm",
"",
"RA= 6.8 kohm"
]
}
],
"prompt_number": 12
},
{
"cell_type": "markdown",
"source": [
"<h3>Example 7.10, Page No: 352<h3>"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"",
"#Variable Declaration:",
"f1=1070.0 #Frequency in hertz",
"RA=50000.0 #Resistance in ohm",
"C=0.01*10**-6 #Capacitance value in farad",
"Rc=76.0#Standard Value #Resistance in ohm",
"",
"#Calculations:",
"t=1.45/(f1*C) ",
"RB=(t-RA)/2 #Calculating value of resistance ",
"RB=RB/1000 #Calculating value of resistance",
"",
"#Results:",
"print('Assuming RA= 50 kohm and C= 0.01 uF')",
"print('\\nHence, RB= %.2f kohm'%RB)",
"print('\\nRc= %d ohm (Standard Value)'%Rc)"
],
"language": "python",
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Assuming RA= 50 kohm and C= 0.01 uF",
"",
"Hence, RB= 42.76 kohm",
"",
"Rc= 76 ohm (Standard Value)"
]
}
],
"prompt_number": 10
}
]
}
]
}
|
