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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 5: Sequential Circuits, Flip flops & Multivibrators"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 1, Page 183\n"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"R=10*10**3;#external resistance ohm#\n",
"C=0.1*10**-6;#timing capacitor Farad#\n",
"\n",
"#Calculations\n",
"T=1.1*R*C;#time for which output remains high in monostable multivibrator using IC 555 timer#\n",
"\n",
"#Result\n",
"print \"Required time=%.1f milli-seconds\"%(T*10**3)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Required time=1.1 milli-seconds\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 2, Page 183"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"Ra=10*10**3 #ohms\n",
"Rb=10*10**3 #ohms\n",
"C=.001*10**-6 #F\n",
"\n",
"#Calculations&Results\n",
"T1=.693*(Ra+Rb)*C;#charging time constant#\n",
"T2=.693*Rb*C;#discharging time constant#\n",
"T=T1+T2;#total time#\n",
"f=1./T;#frequency#\n",
"print 'frequency=%.2f KH'%(f*10**-3);\n",
"D=T2/T;#duty cycle#\n",
"D=D*100\n",
"print 'duty cycle=%.2f percent'%D\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"frequency=48.10 KH\n",
"duty cycle=33.33 percent\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3, Page 184"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"Ra=6.8*10**3 #ohms\n",
"Rb=3.3*10**3 #ohms\n",
"C=.1*10**-6 #F\n",
"\n",
"#Calculations&Results\n",
"T1=.693*(Ra+Rb)*C;#charging time constant#\n",
"T2= .693*Rb*C;#discharging time constant#\n",
"T=T1+T2;#total time#\n",
"f=1/T#frequency#\n",
"print 'frequency=%.3f KH'%(f*10**-3)\n",
"D=T2/T;#duty cycle#\n",
"D=D*100\n",
"print 'duty cycle=%.2f percent'%D"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"frequency=1.077 KH\n",
"duty cycle=24.63 percent\n"
]
}
],
"prompt_number": 3
}
],
"metadata": {}
}
]
}
|
