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| author | debashisdeb | 2014-06-20 15:42:42 +0530 |
|---|---|---|
| committer | debashisdeb | 2014-06-20 15:42:42 +0530 |
| commit | 83c1bfceb1b681b4bb7253b47491be2d8b2014a1 (patch) | |
| tree | f54eab21dd3d725d64a495fcd47c00d37abed004 /Fundamental_of_Electronics_Devices/Ch2.ipynb | |
| parent | a78126bbe4443e9526a64df9d8245c4af8843044 (diff) | |
| download | Python-Textbook-Companions-83c1bfceb1b681b4bb7253b47491be2d8b2014a1.tar.gz Python-Textbook-Companions-83c1bfceb1b681b4bb7253b47491be2d8b2014a1.tar.bz2 Python-Textbook-Companions-83c1bfceb1b681b4bb7253b47491be2d8b2014a1.zip | |
removing problem statements
Diffstat (limited to 'Fundamental_of_Electronics_Devices/Ch2.ipynb')
| -rw-r--r-- | Fundamental_of_Electronics_Devices/Ch2.ipynb | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/Fundamental_of_Electronics_Devices/Ch2.ipynb b/Fundamental_of_Electronics_Devices/Ch2.ipynb index 0b7d4443..b52ed808 100644 --- a/Fundamental_of_Electronics_Devices/Ch2.ipynb +++ b/Fundamental_of_Electronics_Devices/Ch2.ipynb @@ -27,21 +27,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.1\n",
- "#Find probability of an electronic state\n",
"\n",
- "#Given\n",
"dE1=0.1 #eV\n",
"dE2=-0.1 #eV\n",
"k=8.61*10**-5 #Boltzman constant\n",
"T=300 #K\n",
"\n",
- "#Calcualtion\n",
"import math\n",
"FE1=1/(1+math.exp(dE1/(k*T)))\n",
"FE2=1/(1+math.exp(dE2/(k*T)))\n",
"\n",
- "#Result\n",
"print\"Probability when the energy of the state is above 0.1 eV\",round(FE1,2)\n",
"print\"Probability when the energy of the state is below 0.1 eV\",round(FE2,2)"
],
@@ -71,20 +66,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Calculate the temprature at which there is 1 percent probability\n",
- "#that a state of 0.30 eV below the fermi energy level will not contain electrons.\n",
"\n",
- "#Exa 2.2\n",
"Ef=6.25 #EV fermi energy level\n",
"dE=-0.30 #eV\n",
"k=8.61*10**-5 #Boltzman constant\n",
"fE=0.99\n",
"\n",
- "#calculation\n",
- "#From the probability formula fE=1/(1+math.exp(dE/(k*T)))\n",
"T=(dE)/(k*math.log(1/fE-1))\n",
"\n",
- "#result\n",
"print\"The Temprature is\",round(T,1),\"K\" "
],
"language": "python",
@@ -112,22 +101,17 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.3\n",
- "#Determine the fraction of total no. of electron\n",
"\n",
- "#Given\n",
"Eg=0.72 #eV\n",
"Ef=0.5*Eg\n",
"dE=Eg-Ef #eV\n",
"k=8.61*10**-5 #Boltzman constant\n",
"T=300 #K\n",
"\n",
- "#Calcualtion\n",
"import math\n",
"N=1/(1+math.exp(dE/(k*T)))\n",
"\n",
"\n",
- "#Result\n",
"print\"the fraction of total no. of electron is \",round(N,9)"
],
"language": "python",
@@ -155,19 +139,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.4\n",
- "#Calculate the wave length\n",
"\n",
- "#Given\n",
"E=300*1.602*10**-19 #eV Energy\n",
"m=9.108*10**-31 #kg, mass of electron\n",
"h=6.626*10**-34 #Planck constant\n",
"\n",
- "#Calculation\n",
"v=math.sqrt(2*E/m)\n",
"lam=h*v/E\n",
"\n",
- "#Result\n",
"print\"The wavwlength is\",round(lam*10**10,3),\"A\"\n",
"\n",
"\n"
@@ -197,19 +176,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.5\n",
- "#Find the ratio of electron to hole concentration ratio\n",
"\n",
- "#given data\n",
"ni=1.4*10**18\t\t\t#in atoms/m**3\n",
"Nd=1.4*10**24\t\t\t#in atoms/m**3\n",
"n=Nd\t\t\t\t#in atoms/m**3\n",
"\n",
- "#Calculation\n",
"p=ni**2/n\t\t\t#in atoms/m**3\n",
"ratio=n/p\t\t\t#unitless\n",
"\n",
- "#Result\n",
"print\"Ratio of electron to hole concentration : \",round(ratio,2)"
],
"language": "python",
@@ -237,19 +211,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.7\n",
- "#Calculate the magnitude of current\n",
"\n",
- "#Given\n",
"n=10**24 #Electron density\n",
"e=1.6*10**-19 #Electron charge\n",
"v=0.015 #m/s drift velocity\n",
"A=10**-4 #m**2 area\n",
"\n",
- "#Calculation\n",
"I=n*e*v/A\n",
"\n",
- "#Result\n",
"print\"The magnitude of current is\",round(I/10**8,2),\"A\""
],
"language": "python",
@@ -277,24 +246,18 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.8\n",
- "#calculate (i) Relaxation time (ii)Resistivity of conductor (iii) velocity of electron \n",
"\n",
- "#given data\n",
"Ef=5.5\t\t\t#in eV\n",
"MUe=7.04*10**-3\t\t#in m**2/V-s\n",
"n=5.8*10**28\t\t#in m**-3\n",
"e=1.6*10**-19\t\t#constant\n",
"m=9.1*10**-31\t\t#in Kg\n",
"\n",
- "#calculation\n",
- "#part (i)\n",
"import math\n",
"tau=MUe*m/e\t\t#in sec\n",
"rho=1/(n*e*MUe)\t\t#in ohm-m\n",
"vF=math.sqrt(2*Ef*1.6*10**-19/m)\n",
"\n",
- "#Result\n",
"print\"Relaxation time in sec : \",tau,\"s\"\n",
"print\"Resistivity of conductor in ohm-m : \",round(rho,11),\"ohm m\"\n",
"print\"velocity of electron with fermi energy is \",round(vF,0),\"m/s\""
@@ -326,20 +289,15 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.9\n",
- "#Find (i)the valence electrons per unit volume (ii) mobility\n",
"\n",
- "#Given\n",
"rho=1.73*10**-8 #resistivity\n",
"Tav=2.42*10**-14 #Average Time\n",
"e=1.6*10**-19\t\t#constant\n",
"m=9.1*10**-31\t\t#in Kg\n",
"\n",
- "#Calculation\n",
"n=m/(e**2*Tav*rho)\n",
"mu=(e*Tav)/m\n",
"\n",
- "#Result\n",
"print\"NO. of free electrons are\",round(n,-26)\n",
"print\"mobility of electrons is\",round(mu,3),\"m**2/Vs\"\n",
"\n"
@@ -370,8 +328,6 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.10\n",
- "#calculate Relaxation time and drift velocity\n",
"\n",
"Ef=100\t\t\t#in V/m Applied electric field\n",
"n=6*10**28\t\t#in m**-3\n",
@@ -379,12 +335,10 @@ "m=9.1*10**-31\t\t#in Kg mass of electron\n",
"rho=1.5*10**-8 #Density\n",
"\n",
- "#calculation\n",
"import math\n",
"tau=m/(n*e**2*rho)\t\t#in sec\n",
"vF=e*Ef*tau/m\n",
"\n",
- "#Result\n",
"print\"Relaxation time in sec : \",round(tau,16),\"s\"\n",
"print\"velocity of electron with fermi energy is \",round(vF,1),\"m/s\"\n"
],
@@ -414,10 +368,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exampl 2.11\n",
- "#Determine charge density, current density ,Current flowing in the wire, Electron drift velocity\n",
"\n",
- "#Given\n",
"d=0.002 #m, diameter of pipe\n",
"s=5.8*10**7 #Conductivity S/m\n",
"mu=0.0032 #m**2/Vs, Electron mobility\n",
@@ -425,15 +376,12 @@ "m=9.1*10**-31\t\t#in Kg mass of electron\n",
"E=0.02 #V/m Electric field\n",
"\n",
- "#Calculation\n",
"import math\n",
- "#From eq 2.62\n",
"n=s/(e*mu)\n",
"J=s*E\n",
"I=J*(math.pi*d**2/4.0)\n",
"v=mu*E\n",
"\n",
- "#Result\n",
"print\"Charge density is\",round(n,-26),\"m**-3\"\n",
"print\"current density is\",round(J,6),\"A/m**2\"\n",
"print\"curret flowing is\",round(I,3),\"A\"\n",
@@ -467,20 +415,15 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#example 2.12\n",
- "#calculate the drift velocity and time\n",
"\n",
- "#Given\n",
"rho=0.5 #ohm-m Resistivity\n",
"J=100 #A/m**2 Current density\n",
"mue=0.4 #m**2/Vs Electron mobility\n",
"d=10*10**-6 #m distance\n",
"\n",
- "#calculation\n",
"Ve=mue*J*rho\n",
"t=d/Ve\n",
"\n",
- "#Result\n",
"print\"The drift velocity is \",Ve,\"m/s\"\n",
"print\"Time taken by the electron is\",round(t,8),\"s\""
],
@@ -510,22 +453,17 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.13\n",
- "#Calculate drift velocity and time\n",
"\n",
- "#Given\n",
"e=1.6*10**-19\t\t#constant electronic charge\n",
"m=9.1*10**-31\t\t#in Kg mass of electron\n",
"rho=0.039 #ohm-cm resistivity\n",
"mu=3600 #cm**2/Vs Carrier mobility\n",
"ni=2.5*10**13\n",
"\n",
- "#Calculation \n",
"Nd=(1/(rho*e*mu))\n",
"n=Nd\n",
"p=(ni**2/n)\n",
"\n",
- "#Result\n",
"print\"Concentration of electron is\",round(n,-14),\"/cm**3\"\n",
"print\"Concentration of holes is\",round(p,0),\"/cm**3\"\n"
],
@@ -555,10 +493,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.14\n",
- "#Determine concentration of holes and electrons\n",
"\n",
- "#Given\n",
"rho=5.32 #kg/m**3, density\n",
"Aw=72.6 #kg/K kmol atomic weight\n",
"ni=2.5*10**13\n",
@@ -567,14 +502,12 @@ "mue=0.38 #m**/Vs\n",
"muh=0.18 #m**/Vs\n",
"\n",
- "#CAlculation\n",
"N=6.023*10**23*rho/Aw #No 0f germanium atoms per cm**3\n",
"Nd=N/di\n",
"n=Nd\n",
"p=(ni**2/n)\n",
"s=n*e*mue*10**4\n",
"\n",
- "#Result\n",
"print\"Concentration of electrons is\",round(n,-12),\"atoms/cm**3\"\n",
"print\"Concentration of holes is\",round(p,-10),\"atoms/cm**3\"\n",
"\n",
@@ -614,23 +547,18 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.15\n",
- "#Calculate the density and drift velocity\n",
"\n",
- "#Given\n",
"e=1.6*10**-19 #Electronic charge\n",
"mue=0.39 #m**/Vs\n",
"muh=0.19 #m**/Vs\n",
"rhoi=0.47 #ohm-m, intrinsic resistivity\n",
"E=10**4 #Electric field\n",
"\n",
- "#Calculation\n",
"sigmai=1/rhoi\n",
"ni=sigmai/(e*(mue+muh))\n",
"Vn=mue*E\n",
"Vh=muh*E\n",
"\n",
- "#Result\n",
"print\"Density of electrons is\",round(ni,-17),\"/m**3\"\n",
"print\"Drift velocity for electrons\",round(Vn,0),\"m/s\"\n",
"print\"Drift velocity for holes\",round(Vh,0),\"m/s\""
@@ -662,10 +590,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.16\n",
- "#Calculate conductivity\n",
"\n",
- "#Given\n",
"i=10**7 #IMpurity in Ge atom\n",
"ni=2.5*10**13 #/cm**3\n",
"N=4.4*10**22 #No. of atoms of Ge\n",
@@ -674,7 +599,6 @@ "e=1.6*10**-19 #Electronic charge\n",
"E=400 #Electric field\n",
"\n",
- "#Calculation\n",
"sigmai=ni*e*(mue+muh)\n",
"Nd=N/i\n",
"n=Nd\n",
@@ -710,11 +634,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.17\n",
- "#(i)Electron drift velocity & hole drift velocity .\n",
- "#(ii)Intrinsic Conductivity of Ge,(iii)The total current .\n",
"\n",
- "#Given\n",
"V=10 #Volt\n",
"l=0.025 #m, length\n",
"w=0.004 #m width\n",
@@ -726,14 +646,12 @@ "e=1.6*10**-19 #Electronic charge\n",
"E=400 #Electric field\n",
"\n",
- "#Calculation\n",
"E=V/l\n",
"Ve=mue*E\n",
"Vh=muh*E\n",
"sigmai=ni*e*(mue+muh)\n",
"I=sigmai*E*w*t\n",
"\n",
- "#Result\n",
"print\"(i)Electron drift velocity is \",Ve,\"m/s\"\n",
"print\" hole drift velocity is \",Vh,\"m/s\"\n",
"print\"(ii)Intrinsic Conductivity of Ge is\",sigmai,\"ohm-m**-1\"\n",
@@ -767,19 +685,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.18\n",
- "#What is ratio of electrons to holes\n",
"\n",
- "#Given\n",
"Ie=3/4.0 #Current due to electron\n",
"Ih=1-Ie #Current due to holes\n",
"Vh=1 #Hole velocity\n",
"Ve=3 #Electron velocity 3 times the hole velocity\n",
"\n",
- "#ccalculation\n",
"R=(Ie*Vh/(Ih*Ve))\n",
"\n",
- "#Result\n",
"print\"The ratio of electrons to holes drift velocity is \",R"
],
"language": "python",
@@ -807,10 +720,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.19\n",
- "#Find the diffusion coefficients of electrons and holes\n",
"\n",
- "#given data\n",
"e=1.6*10**-19\t\t\t#in coulamb\n",
"T=300\t\t\t\t#in Kelvin\n",
"MUh=0.025\t\t\t#in m**2/V-s\n",
@@ -819,7 +729,6 @@ "De=MUe*k*T/e\t\t\t#in cm**2/s\n",
"Dh=MUh*k*T/e\t\t\t#in cm**2/s\n",
"\n",
- "#Result\n",
"print\"Diffusion constant of electron is \",round(De*10000,2),\"(in cm**2/s)\"\n",
"print\"Diffusion constant of hole is \",round(Dh*10000,2),\"(in cm**2/s)\""
],
@@ -849,10 +758,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.20\n",
- "#Find intrinsic carries cncentration and conductivity\n",
"\n",
- "#Given\n",
"N=3*10**25 #No of atoms\n",
"e=1.6*10**-19\n",
"Eg=1.1*e #eV\n",
@@ -861,11 +767,9 @@ "mue=0.14\n",
"muh=0.05\n",
"\n",
- "#Calculation\n",
"ni=N*math.exp(-Eg/(2*k*T))\n",
"sigma=ni*e*(mue+muh)\n",
"\n",
- "#Result\n",
"print\"The intrinsic carries concentration is \",round(ni,-14),\"/m**3\"\n",
"print\"The conductivity of Si is \",round(sigma,5),\"S/m\"\n"
],
@@ -895,18 +799,12 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.21\n",
- "#Find the effective density\n",
"\n",
- "#Given\n",
"a=1.5 #a=me/mo\n",
"T=300 #K\n",
"\n",
- "#calculation\n",
- "#from eq. 2.29\n",
"Nc=4.82*10**21*(a)**(1.5)*T**(1.5)\n",
"\n",
- "#Result\n",
"print\"The effective density is\",round(Nc,-23),\"/m**3\""
],
"language": "python",
@@ -934,22 +832,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.22\n",
- "#Calculate the intrinsic concentration\n",
"\n",
- "#Given\n",
"a=0.07 #a=me/mo\n",
"b=0.4 #b=mh/mo\n",
"T=300 #K\n",
"Eg=0.7 #eV\n",
"k=8.62*10**-5 # Boltzman constant\n",
"\n",
- "#calculation\n",
"import math\n",
- "#From eq 2.101\n",
"ni=math.sqrt(2.33*10**43*(a*b)**(1.5)*T**3*math.exp(-Eg/(k*T)))\n",
"\n",
- "#Result\n",
"print\"The intrinsic concentration of charge carrier is\",round(ni,-16),\"/m**3\"\n",
"\n",
"\n",
@@ -980,20 +872,15 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.23\n",
- "#Find the value of absolute temprature\n",
"\n",
- "#Given\n",
"C=5*10**28 #atom/m**3, concentration of Si atoms\n",
"DL=2*10**8 #Doping level \n",
"m=1\n",
"me=m\n",
- "#calculation\n",
"Nd=C/DL\n",
"nc=Nd\n",
"T=((nc/(4.82*10**21))*(m/me)**(1.5))**(2/3.0)\n",
"\n",
- "#Result\n",
"print\"The absolute temprature is\",round(T,2),\"K\"\n",
"\n"
],
@@ -1022,10 +909,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.24\n",
- "#Determine the effective density\n",
"\n",
- "#Given\n",
"T1=300.0 #K temprature\n",
"T2=400.0\n",
"k=1.38*10**-23 #J/k\n",
@@ -1034,7 +918,6 @@ "dE=0.3 #eV\n",
"k_=8.62*10**-5\n",
"\n",
- "#calculation\n",
"import math\n",
"nc1=2*(2*math.pi*m*k*T1/(h**2))**(1.5)\n",
"n1=nc1*math.exp(-(0.3/(k_*T1)))\n",
@@ -1042,7 +925,6 @@ "nc2=2*(2*math.pi*m*k*T2/(h**2))**(1.5)\n",
"n2=nc2*math.exp(-(0.3/(k_*T2)))\n",
"\n",
- "#result\n",
"print\"The effective density at temprature 300 K is\",round(n1,-19),\"/m**3\"\n",
"print\"The effective density at temprature 400 K is\",round(n2,-19),\"/m**3\"\n"
],
@@ -1072,10 +954,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#example 2.25\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"T=300.0\n",
"k=8.62*10**-5 #J/k\n",
"m=9.107*10**-31\n",
@@ -1083,10 +962,8 @@ "mh=0.4*m\n",
"\n",
"\n",
- "#calculation\n",
"dE=-3*k*T*math.log((me/mh)**(1))/4.0 #dE=Ef-Emidgap\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE,4),\"eV\"\n"
],
"language": "python",
@@ -1114,22 +991,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#example 2.26\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"T=300.0\n",
"Eg=0.72 #eV Energy gap\n",
"k=8.62*10**-5 #J/k\n",
"me=1\n",
"mh=5.0\n",
"\n",
- "#calculation\n",
- "#from Ef=Ec-kTlog(nc/Nd)\n",
"import math\n",
"dE=(Eg/2.0)-3*k*T*math.log(me/mh)/4.0 #dE=Ef-Emidgap\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE,4),\"eV\"\n"
],
"language": "python",
@@ -1157,20 +1028,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#example 2.27\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"T1=300.0\n",
"T2=350\n",
"Eg=0.24 #eV Energy gap\n",
"\n",
- "#calculation\n",
- "#from Ef=Ev+kTlog(nc/Nd)\n",
"import math\n",
"dE=(T2/T1)*Eg\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE,4),\"eV\"\n"
],
"language": "python",
@@ -1198,19 +1063,14 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.28\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"T1=300.0\n",
"T2=400\n",
"Eg=0.27 #eV Energy gap\n",
"\n",
- "#calculation\n",
"import math\n",
"dE=(T2/T1)*Eg\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE,4),\"eV\"\n"
],
"language": "python",
@@ -1238,20 +1098,15 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "##Example 2.29\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"dE1=0.3 #eV Energy gap\n",
"kT=0.026 #eV\n",
"\n",
- "#calculation\n",
"import math\n",
"x=math.exp(-dE1/kT) #x=Nd/nc\n",
"y=5 #y=Nd2/Nd1\n",
"dE2=-math.log(y)*kT+dE1\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE2,3),\"eV\"\n"
],
"language": "python",
@@ -1279,21 +1134,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "##Example 2.30\n",
- "#determine the position of intrinsic fermi level\n",
"\n",
- "#Given\n",
"dE1=0.39 #eV Energy gap\n",
"kT=0.026 #eV\n",
"\n",
- "#calculation\n",
"import math\n",
"x=math.exp(-dE1/kT) #x=NA1/nV\n",
"y=3 #y=NA2/NA1\n",
"dE2=((dE1/kT)-math.log(y))*kT\n",
"\n",
"\n",
- "#Result\n",
"print\"The position of fermi level is\",round(dE2,2),\"eV\"\n"
],
"language": "python",
@@ -1321,21 +1171,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#example 2.31\n",
- "#Determine electron density and mobility\n",
"\n",
- "#Given\n",
"rho=1 #ohm-m Resistivity\n",
"Rh=100.0 #cm**3/coulomb\n",
"e=1.6*10**-19\n",
"\n",
- "#calculation\n",
"con=1/rho #Conductivity\n",
"R=1/Rh #Charge density\n",
"ED=R*10**6/e\n",
"mu=con/(R*10**6)\n",
"\n",
- "#Result\n",
"print\"The electron density is\",ED,\"/m**3\"\n",
"print\"The mobility is %.e\"%mu,\"/m**3\""
],
@@ -1365,20 +1210,15 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Example 2.32\n",
- "#Calculate Hall Voltage\n",
"\n",
- "#Given\n",
"w=0.1 #m width\n",
"t=0.01 #m thickness\n",
"F=0.6 #T, field\n",
"Rh=3.8*10**-4 #Hall Coefficient\n",
"I=10 #mA\n",
"\n",
- "#calculation\n",
"Vh=(Rh*F*I/w)\n",
"\n",
- "#Result\n",
"print\"Hall Voltage is\",Vh*1000,\"micro V\"\n",
"\n",
"\n"
@@ -1408,10 +1248,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.33\n",
- "#What is magnitude of Hall Voltage\n",
"\n",
- "#given data\n",
"e=1.6*10**-19\t\t\t#in coulamb\n",
"ND=10**17\t\t\t#in cm**-3\n",
"Bz=0.1\t\t\t\t#in Wb/m**2\n",
@@ -1420,12 +1257,10 @@ "Ex=5\t\t\t\t#in V/cm\n",
"MUe=3800\t\t\t#in cm**2/V-s\n",
"\n",
- "#calculation\n",
"v=MUe*Ex\t\t\t#in cm/s\n",
"v=v*10**-2\t\t\t#in m/s\n",
"VH=Bz*v*d\t\t\t#in mV\n",
"\n",
- "#Result\n",
"print\"Magnitude of hall voltage is\",VH,\"mV\""
],
"language": "python",
@@ -1453,10 +1288,7 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.34\n",
- "#What is magnitude of hall voltage\n",
"\n",
- "#given data\n",
"e=1.6*10**-19\t\t\t#in coulamb\n",
"ND=10**21\t\t\t#in m**-3\n",
"Bz=0.2\t\t\t\t#in T\n",
@@ -1465,11 +1297,8 @@ "J=600\t\t\t\t#in A/m**2\n",
"n=ND\t\t\t\t#in m**-3\n",
"\n",
- "#calculation\n",
- "#formula : VH*w/(B*I)=1/(n*e)\n",
"VH=Bz*J*d/(n*e)\t\t\t#in V\n",
"\n",
- "#Result\n",
"print\"Magnitude of hall voltage is \",VH*10**3,\"mV\""
],
"language": "python",
@@ -1497,21 +1326,16 @@ "cell_type": "code",
"collapsed": false,
"input": [
- "#Exa 2.35\n",
- "#Calculate hall angle\n",
"\n",
- "#given data\n",
"e=1.6*10**-19\t\t\t#in coulamb\n",
"rho=0.00912\t\t\t#in ohm-m\n",
"B=0.48\t\t\t\t#in Wb/m**2\n",
"RH=3.55*10**-4\t\t\t#in m**3-coulamb**-1\n",
"SIGMA=1/rho\t\t\t#in (ohm=m)**-1\n",
"\n",
- "#calculation\n",
"import math\n",
"THETAh=math.atan(SIGMA*B*RH)\t#in Degree\n",
"\n",
- "#result\n",
"print\"Hall angle is\",round(THETAh*180/3.14,4),\"degree\""
],
"language": "python",
|