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{
"metadata": {
"celltoolbar": "Raw Cell Format",
"name": "",
"signature": "sha256:ed1a25d96a9de635d5aa1c88be7d5d2e542d32bc8dd1dcaa2a4c1e4169428cb8"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 13: Networks"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.1,Page number 568"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"#given\n",
"\n",
"Vcc=5; #in V\n",
"Vf=1.5; #in V\n",
"If=60; #in mA\n",
"B=3.97;\n",
"N=3;\n",
"R9=(Vcc-Vf)*(B+1)/If/10**-3;\n",
"print\"R9 =\",round(R9,4),\"ohm\";\n",
"R7=R9/2/B-3/N;\n",
"print\"R7 =\",round(R7,4),\"ohm\";\n",
"R8=R9/2/B;\n",
"print\"R8 =\",round(R8,4),\"ohm\";\n",
"C4=2*10**-9/R8;\n",
"print\"C4 =\",round(C4*10**12,4),\"pF\";\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"R9 = 289.9167 ohm\n",
"R7 = 35.5134 ohm\n",
"R8 = 36.5134 ohm\n",
"C4 = 54.7744 pF\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.2,Page number 569"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"#given\n",
"\n",
"Vu3=1.24; #in V\n",
"Vbeq3=0.7; #in V\n",
"Vbeq4=0.7; #in V\n",
"R5=17.5; #in Ohm\n",
"R6=17.5; #in Ohm\n",
"Voh=5; #in V\n",
"Vol=0; #in V\n",
"\n",
"If=(Vu3-Vbeq3)/R5+(Vu3-Vbeq4)/R6;\n",
"print\"If=\",round(If*1000,4),\"mA\";\n",
"\n",
"R3=(Voh-Vol)/If;\n",
"print\"R3=\",round(R3,4),\"ohm\";\n",
"\n",
"C4=2*10**-9/R3;\n",
"print\"C4=\",round(C4*10**12,4),\"pF\";\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"If= 61.7143 mA\n",
"R3= 81.0185 ohm\n",
"C4= 24.6857 pF\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.2,Page number 581"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"##\"Page number 581 again Example 13-2 (numbering mistake)\";\n",
"import math\n",
"\n",
"#given\n",
"\n",
"Er=4.9;\n",
"h=5; #in mils\n",
"w=10; #in mils\n",
"t=0.5; #in mils\n",
"\n",
"Z=60.0/math.sqrt(0.475*Er+0.67)*log(4*h/0.67/(0.8*w+t));\n",
"print\"Z =\",round(Z,4),\"ohm\";\n",
"\n",
"tpd=1.017*sqrt(0.475*Er+0.67);\n",
"print\"tpd =\",round(tpd,4),\"ns/ft\";\n",
"\n",
"Tpd=tpd*1000/12; #converted into ps/in\n",
"print\"tpd =\",round(Tpd,4),\"ps/in\";\n",
"\n",
"Co=Tpd/Z;\n",
"print\"Co =\",round(Co,4),\"pF/in\";\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Page number 581 again Example 13-2 (numbering mistake)\n",
"Z = 43.5322 ohm\n",
"tpd = 1.7608 ns/ft\n",
"tpd = 146.7301 ps/in\n",
"Co = 3.3706 pF/in\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 13.3,Page number 583"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"#given\n",
"\n",
"Er=4.7;\n",
"b=10; #in mils\n",
"w=4; #in mils\n",
"t=0.5; #in mils\n",
"\n",
"Z=60/math.sqrt(Er)*log(4*b/0.67/math.pi/(0.8*w+t));\n",
"print\" Z =\",round(Z,4),\"ohm\";\n",
"\n",
"tpd=1.017*sqrt(Er);\n",
"print\" tpd =\",round(tpd,4),\"ns/ft\";\n",
"\n",
"Tpd=tpd*1000/12; #converted into ps/in\n",
"print\" Also,tpd =\",round(Tpd,4),\"ps/in\";\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" Z = 45.286 ohm\n",
" tpd = 2.2048 ns/ft\n",
" Also,tpd = 183.7336 ps/in\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
