{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter13 - Cathode Ray Oscilloscope"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 578 example 1"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"power to electrons = 8.0 watts\n"
]
}
],
"source": [
"from __future__ import division\n",
"quanti=3*10**17#\n",
"voltag=10*10**3##volt\n",
"distan=40*10**-3##metre per minute\n",
"w=quanti*1.6*10**-19*voltag\n",
"w=w/60##per second\n",
"\n",
"print \"power to electrons = \",round((w),2),\"watts\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 578 example 2"
]
},
{
"cell_type": "code",
"execution_count": 15,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"input voltage = 9.55 volt\n",
"frequency = 4761.9 hertz\n",
"vm1coswt vm2sinwt squaring and adding gives ellipse\n"
]
}
],
"source": [
"from math import sqrt\n",
"sensit=5## per centimetre\n",
"q=50*10**-6##second per centimetre\n",
"petope=5.4##centimetre\n",
"horiax=8.4##centimetre\n",
"voltag=petope*sensit#\n",
"voltag=voltag/((2)*sqrt(2))#\n",
"#one cycle\n",
"horiax=(horiax/2)*q#\n",
"freque=1/horiax#\n",
"print \"input voltage = \",round((voltag),2),\"volt\"\n",
"print \"frequency = \",round((freque),2),\"hertz\"\n",
"\n",
"\n",
"print \"vm1coswt vm2sinwt squaring and adding gives ellipse\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 579 example 3"
]
},
{
"cell_type": "code",
"execution_count": 18,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"velocity x = 1.874e+07 metre per second\n",
"velocity x = 3.10e+05 metre per second\n"
]
}
],
"source": [
"voltag=1000##volt\n",
"#(1) velocity\n",
"vx=sqrt(2*1.6*10**-19*(voltag)/(9.11*10**-31))#\n",
"print \"velocity x = %0.3e\"%vx,\"metre per second\"\n",
"vox=1*10**5##metre per second intial velocity\n",
"vx=sqrt((vox)+((2*1.6*10**-19*voltag)/(2.01*1.66*10**-27)))#\n",
"\n",
"print \"velocity x = %0.2e\"%vx,\"metre per second\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 580 example 4"
]
},
{
"cell_type": "code",
"execution_count": 20,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"transverse magnetic field = 3.87e-04 weber per metre square\n"
]
}
],
"source": [
"voltag=2000##volt\n",
"d=15##centimetre\n",
"d1=3##centimetre\n",
"r1=((d**2+d1**2)/(6))*10**-2##centimetre to metre\n",
"vox=sqrt(2*1.6*10**-19*(voltag)/(9.11*10**-31))#\n",
"b=vox/((1.6*10**-19*r1)/(9.11*10**-31))#\n",
"\n",
"print \"transverse magnetic field = %0.2e\"%b,\"weber per metre square\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 581 example 5"
]
},
{
"cell_type": "code",
"execution_count": 22,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"max frequency = 6.63e+08 hertz\n",
"duration electron between the plates = 4.53e-08 second\n"
]
}
],
"source": [
"voltag=2000##volt\n",
"d=2*10**-2##metre\n",
"#(1) frequency\n",
"vx=sqrt(2*1.6*10**-19*(voltag)/(9.11*10**-31))#\n",
"durati=d/vx#\n",
"freque=1/(2*durati)#\n",
"print \"max frequency = %0.2e\"%freque,\"hertz\"\n",
"#(2)\n",
"durati=60*durati#\n",
"print \"duration electron between the plates = %0.2e\"%durati,\"second\"#correction in book"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 582 example 7"
]
},
{
"cell_type": "code",
"execution_count": 23,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"max velocity = 1.68e+07 metre per second\n"
]
}
],
"source": [
"voltag=800##volt\n",
"\n",
"\n",
"q=1.6*10**-19##coulomb\n",
"m=9.11*10**-31##kilogram\n",
"vox=sqrt(2*q*voltag/m)#\n",
"\n",
"print \"max velocity = %0.2e\"%vox,\"metre per second\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 582 example 8"
]
},
{
"cell_type": "code",
"execution_count": 26,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"velocity = 2.65e+07 metre per second\n",
"sensitivity = 3.75e-04 metre per volt\n",
"deflection factor = 2666.67 volt per metre\n"
]
}
],
"source": [
"voltag=2000##volt\n",
"d=1.5*10**-2##centimetre\n",
"d1=5*10**-3##metre\n",
"distan=50*10**-2##metre\n",
"#(1) velocity\n",
"vox=sqrt(2*1.6*10**-19*(voltag)/(9.11*10**-31))#\n",
"#(2) sensitivity\n",
"defsen=distan*d/(2*d1*voltag)#\n",
"#deflection factor\n",
"g=1/defsen#\n",
"print \"velocity = %0.2e\"%vox,\"metre per second\"\n",
"print \"sensitivity = %0.2e\"%defsen,\"metre per volt\"\n",
"\n",
"print \"deflection factor = \",round((g),2),\"volt per metre\"#correction in the book"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 582 example 9"
]
},
{
"cell_type": "code",
"execution_count": 28,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"velocity = 2.65e+07 metre per second\n",
"fc = 1.33e+08 hertz\n"
]
}
],
"source": [
"voltag=2000##volt\n",
"d=50*10**-3##metre\n",
"#(1) velocity\n",
"vox=sqrt(2*1.6*10**-19*(voltag)/(9.11*10**-31))#\n",
"print \"velocity = %0.2e\"%vox,\"metre per second\"\n",
"#(2) fc\n",
"fc=vox/(4*d)#\n",
"\n",
"print \"fc = %0.2e\"%fc,\"hertz\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## PageNumber : 582 example 10"
]
},
{
"cell_type": "code",
"execution_count": 29,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"phase angle = 30.0 degre\n"
]
}
],
"source": [
"y=2.5##divisions\n",
"y1=1.25##divisions\n",
"y=y1/y#\n",
"from math import asin, degrees\n",
"w=degrees(asin(y))\n",
"\n",
"print \"phase angle = \",round((w),2),\"degre\""
]
}
],
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