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diff --git a/Solid_State_Electronics/Solid_State_electronics_Ch5.ipynb b/Solid_State_Electronics/Solid_State_electronics_Ch5.ipynb new file mode 100755 index 00000000..6b01a9c6 --- /dev/null +++ b/Solid_State_Electronics/Solid_State_electronics_Ch5.ipynb @@ -0,0 +1,331 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 5 : Power Amplifiers"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.1, Page No. 167"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# efficiency\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "Pac=0.1 #in W\n",
+ "Vcc=20.0 #in V\n",
+ "Ic=20.0 #in mA\n",
+ "\n",
+ "#Calculations\n",
+ "Pdc=Vcc*Ic*10**-3 #in W\n",
+ "eta=(Pac/Pdc)*100 #efficiency\n",
+ "\n",
+ "#Result\n",
+ "print(\"efficiency is ,(%%)= %.f\"%eta)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "efficiency is ,(%)= 25\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.2, Page No. 167"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# collector current\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "Pac=2.0 #in W\n",
+ "Vcc=12.0 #in V\n",
+ "\n",
+ "#Calculations\n",
+ "Ic=(Pac*math.sqrt(2)*math.sqrt(2))/Vcc\n",
+ "\n",
+ "#Result\n",
+ "print(\"maximum collector current is ,(A)= %.2f\" %Ic)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "maximum collector current is ,(A)= 0.33\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.3, Page No. 167"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# collector efficiency and power rating\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "Pac=3.0 #in W\n",
+ "Pdc=10.0 #in W\n",
+ "\n",
+ "#Calculations\n",
+ "eta=(Pac/Pdc)*100 #percentage efficieny \n",
+ "\n",
+ "#Result\n",
+ "print(\"collector efficiency is , (%%) = %.f\"%eta)\n",
+ "print(\"power rating of transistor is ,(W) = %.f\" %Pdc)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "collector efficiency is , (%) = 30\n",
+ "power rating of transistor is ,(W) = 10\n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.4, Page No. 168"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# power\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "dIc=100.0 #in mA\n",
+ "Rl=6.0 #in ohm\n",
+ "Rl=6.0 #in ohm\n",
+ "dVc=10.0 #in V\n",
+ "\n",
+ "#Calculations\n",
+ "mv=dIc*Rl*10**-3 #in V\n",
+ "pd=mv*dIc #in mW\n",
+ "oi=(dVc/dIc)*10**3 #in ohm\n",
+ "n=math.sqrt(oi/Rl) #turn ratio of transformer\n",
+ "tsv=dVc/n #om V\n",
+ "Il=tsv/Rl #in A\n",
+ "ptr= Il**2*Rl*10**3 #in mW\n",
+ "\n",
+ "#Result\n",
+ "print(\"(i) power developed in loudspeaker is , (mW)= %.f\"%pd)\n",
+ "print(\"(ii) power transferred to loudspeaker is ,(mw)= %.f\"%ptr)\n",
+ "#in textbook in second case there is one point deviation in the answer."
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(i) power developed in loudspeaker is , (mW)= 60\n",
+ "(ii) power transferred to loudspeaker is ,(mw)= 1000\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.5, Page No. 168"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# power\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "n=10.0 #turn ratio\n",
+ "Rl=10.0 #ohm\n",
+ "Ic=100.0 #in mA\n",
+ "\n",
+ "#Result\n",
+ "Rld=n**2*Rl #in ohm\n",
+ "Irms=Ic/(math.sqrt(2)) #in mA\n",
+ "P=Irms**2*Rld #in W\n",
+ "\n",
+ "#Result\n",
+ "print(\"maximum power output is ,(W)= %.f\"%(P*10**-6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "maximum power output is ,(W)= 5\n"
+ ]
+ }
+ ],
+ "prompt_number": 20
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.6, Page No. 169"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# harmonic distortions and change in power\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "#ie=15*sin 400*t+1.5*sin 800*t + 1.2*sin 1200*t + 0.5*sin 1600*t given equation\n",
+ "I2=1.5 #in A\n",
+ "I1=15.0 #in A\n",
+ "I3=1.2 #in A\n",
+ "I4=0.5 #in A\n",
+ "D2=(I2/I1)*100 #Second percentage harmonic distortion\n",
+ "D3=(I3/I1)*100 #Third percentage harmonic distortion\n",
+ "#in book I2 is mentioned wrongly in place of I1\n",
+ "D4=(I4/I1)*100 #Fourth percentage harmonic distortion\n",
+ "D=math.sqrt(D2**2+D3**2+D4**2)/100 #Distortion Factor\n",
+ "P1=1.0 #assume\n",
+ "P=(1+D**2)*P1 #in W\n",
+ "peri=((P-P1)/P1)*100 #percentage increase in power due to distortion\n",
+ "\n",
+ "#Result\n",
+ "print(\"part (i)\")\n",
+ "print(\"Second percentage harmonic distortion (D2) is ,(%%) = %.f\"%D2)\n",
+ "print(\"Third percentage harmonic distortion (D3) is ,(%%) = %.f\"%D3)\n",
+ "print(\"Fourth percentage harmonic distortion (D4) is ,(%%) = %.2f\"%D4)\n",
+ "print(\"\\npart (ii)\")\n",
+ "print(\"percentage increase in power due to distortion is ,(%%) = %.2f\"%peri)\n",
+ "# answer for % increase is slightly different than book"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "part (i)\n",
+ "Second percentage harmonic distortion (D2) is ,(%) = 10\n",
+ "Third percentage harmonic distortion (D3) is ,(%) = 8\n",
+ "Fourth percentage harmonic distortion (D4) is ,(%) = 3.33\n",
+ "\n",
+ "part (ii)\n",
+ "percentage increase in power due to distortion is ,(%) = 1.75\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 5.7, Page No. 169"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# power dissipated\n",
+ "\n",
+ "import math\n",
+ "#Variable declaration\n",
+ "Vcc=15.0 #in V\n",
+ "Vpeak=24.0/2 #in V\n",
+ "Rl=100.0 #in ohm\n",
+ "\n",
+ "#Calculations\n",
+ "Ipeak= Vpeak/Rl #in A\n",
+ "Pdc=Vcc*(2/(math.pi))*Ipeak #in W\n",
+ "pad=(1.0/2)*(Vpeak**2)/Rl #in W\n",
+ "pd=Pdc-pad #in W\n",
+ "pde=pd/2 #in W\n",
+ "\n",
+ "#Result\n",
+ "print(\"power dissipated by each transistor is,(mW)= %.f\"%(pde*10**3))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "power dissipated by each transistor is,(mW)= 213\n"
+ ]
+ }
+ ],
+ "prompt_number": 28
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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