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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": [
+ "'''RC Phase shift oscillator'''",
+ "",
+ "#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": [
+ "'''Wien bridge oscillator'''",
+ "",
+ "#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": [
+ "''' Astable multivibrator'''",
+ "",
+ "#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": [
+ "'''Square wave oscillator'''",
+ "",
+ "#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": [
+ "'''Triangular wave generator'''",
+ "",
+ "#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": [
+ "'''Sawtooth wave generator'''",
+ "",
+ "#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": [
+ "'''Monostable multivibrator'''",
+ "# 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": [
+ "'''Frequency of oscillation'''",
+ "",
+ "#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": [
+ "'''Astable multivibrator'''",
+ "",
+ "#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": [
+ "'''Teletypewrite'''",
+ "",
+ "#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
+ }
+ ]
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-20 11:22:33 +0000