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{
"metadata": {
"name": "",
"signature": "sha256:ab5dad51b8bb4848e05fe479e673fa81caef98b1e0130b3768c6e1580871f987"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 3: Negative Feedback"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3.1, Page 75"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"Aol=200;\n",
"f2_ol=10000; # in Hz\n",
"B=0.04;\n",
"\n",
"#Calculations&Results\n",
"Asp=Aol/(1+B*Aol);\n",
"print \"Asp %.2f \\n \"%Asp; #Result\n",
"print \"Approximately Asp =1/B equal to %.0f \\n\"%(1/B);#result\n",
"S=Aol/Asp;\n",
"print \"S =%.0f \\n\"%S;\n",
"f2_sp=f2_ol*S;\n",
"print \"f2_sp %.0f Hz\"%f2_sp; #Result"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Asp 22.22 \n",
" \n",
"Approximately Asp =1/B equal to 25 \n",
"\n",
"S =9 \n",
"\n",
"f2_sp 90000 Hz\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3.2, Page 76"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"Asp1=20.\n",
"Asp=10**(Asp1/20);\n",
"\n",
"#Calculations&Results\n",
"print \"Asp =%.0f\\n\"%Asp;#Result\n",
"#Rf/Ri=Asp-1;\n",
"print \"Rf/Ri=%.0f \\n\"%(Asp-1);#Result\n",
"print \"Rf must be 9 times larger than Ri. \\n There are many possibilities \";#Result"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Asp =10\n",
"\n",
"Rf/Ri=9 \n",
"\n",
"Rf must be 9 times larger than Ri. \n",
" There are many possibilities \n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3.3, Page 82"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"Zin_ol=300*10**3; #in Ohms\n",
"Zout=100; #in Ohms\n",
"Aol=50000.;\n",
"Zout_ol=100.;\n",
"Asp=100;\n",
"\n",
"#Calculations&Results\n",
"S=Aol/Asp;\n",
"print \"S = %.0f\"%S;#Result\n",
"Zin_sp=S*Zin_ol;\n",
"print \"Zin_sp = %.0f Ohm\"%Zin_sp;#Result\n",
"Zout_sp=Zout_ol/S;\n",
"print \"Zout_sp = %.1f Ohm\"%Zout_sp;#Result\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"S = 500\n",
"Zin_sp = 150000000 Ohm\n",
"Zout_sp = 0.2 Ohm\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 3.4, Page 88"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"R1=9000; # in Ohm\n",
"R2=1000.; #in Ohm\n",
"\n",
"#Calculations&Results\n",
"B=R2/(R1+R2);\n",
"print \"B is %.2f\\n\"%B;#Result\n",
"#Aps=1/B;\n",
"Aps=(R1+R2)/R2;\n",
"print \"Aps = %.0f \\n \"%Aps;#Result"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"B is 0.10\n",
"\n",
"Aps = 10 \n",
" \n"
]
}
],
"prompt_number": 4
}
],
"metadata": {}
}
]
}
|
