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diff --git a/Electronic_Principles/Chapter_12_New.ipynb b/Electronic_Principles/Chapter_12_New.ipynb new file mode 100755 index 00000000..9f88647a --- /dev/null +++ b/Electronic_Principles/Chapter_12_New.ipynb @@ -0,0 +1,593 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "CHAPTER 12 POWER AMPLIFIERS"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-1, Page 384"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "import math # This will import math module\n",
+ "\n",
+ "VCC=30 #collector voltage(V)\n",
+ "RE=20 #Emitter resistance(Ohm)\n",
+ "R1=490.0 #Base resistance1 (Ohm)\n",
+ "R2=68.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=180 #Load Resistance(Ohm)\n",
+ "RC=120 #Collector resistance(Ohm)\n",
+ "\n",
+ "VB=VCC*(R2/(R1+R2)) #Base voltage(V)\n",
+ "VE=math.ceil(VB-VBE) #Emitter voltage(V)\n",
+ "IE=VE/RE #Emitter current(A)\n",
+ "ICQ=IE #collector current (A)\n",
+ "VC=VCC-(ICQ*RC) #collector voltage(V)\n",
+ "VCEQ=VC-VE #collector-emitter voltage (V) \n",
+ "rc=RC*RL/(RC+RL) #ac collector resistance(Ohm)\n",
+ "\n",
+ "print 'Collector current ICQ = ',ICQ*1000,'mA'\n",
+ "print 'collector-emitter voltage VCEQ = ',VCEQ,'V'\n",
+ "print 'ac collector resistance rc = ',rc,'Ohm'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Collector current ICQ = 150.0 mA\n",
+ "collector-emitter voltage VCEQ = 9.0 V\n",
+ "ac collector resistance rc = 72 Ohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-2, Page 385"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "VCC=30 #collector voltage(V)\n",
+ "RE=20 #Emitter resistance(Ohm)\n",
+ "R1=490.0 #Base resistance1 (Ohm)\n",
+ "R2=68.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=180 #Load Resistance(Ohm)\n",
+ "RC=120 #Collector resistance(Ohm)\n",
+ "\n",
+ "ICQ=150 #collector current (mA)\n",
+ "VCEQ=9 #collector-emitter voltage (V) \n",
+ "rc=72.0 #ac collector resistance(Ohm)\n",
+ "\n",
+ "ic_sat=ICQ+(VCEQ/rc)*1000 #ic(sarturation) (mA)\n",
+ "VCE_cut=VCEQ+((ICQ*rc)/1000) #VCE(cut-off) (V)\n",
+ "MP1=ICQ*RC\n",
+ "MP2=VCEQ\n",
+ "MPP=2*(min(MP1,MP2)) #maximum peak-to-peak voltage (V)\n",
+ "\n",
+ "print 'ic(sarturation) = ',ic_sat,'mA'\n",
+ "print 'VCE(cut-off) = ',VCE_cut,'V'\n",
+ "print 'maximum peak-to-peak voltage MPP = ',MPP,'V'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "ic(sarturation) = 275.0 mA\n",
+ "VCE(cut-off) = 19.8 V\n",
+ "maximum peak-to-peak voltage MPP = 18 V\n"
+ ]
+ }
+ ],
+ "prompt_number": 18
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-3, Page 387"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "import math # This will import math module\n",
+ "\n",
+ "VCC=30 #collector voltage(V)\n",
+ "RE=20 #Emitter resistance(Ohm)\n",
+ "R1=490.0 #Base resistance1 (Ohm)\n",
+ "R2=68.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=180.0 #Load Resistance(Ohm)\n",
+ "RC=120 #Collector resistance(Ohm)\n",
+ "vin=200 #input voltage(mV)\n",
+ "zin=100 #input impedance of base(Ohm)\n",
+ "MPP=18 #peak-to-peak voltage (V)\n",
+ "\n",
+ "Zin_stage=((zin**-1)+(R1**-1)+(R2**-1))**-1 #input impedance of stage(KOhm)\n",
+ "Pin=vin**2/(Zin_stage*8)/1000 #ac input power (mW)\n",
+ "Pout=1000*MPP**2/(RL*8) #ac output power (mW)\n",
+ "Ap=Pout/Pin #power gain\n",
+ "\n",
+ "print 'Power gain Ap = ',math.ceil(Ap)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Power gain Ap = 1683.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 28
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-4, Page 388"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "import math # This will import math module\n",
+ "\n",
+ "VCC=30 #collector voltage(V)\n",
+ "RE=20 #Emitter resistance(Ohm)\n",
+ "R1=490.0 #Base resistance1 (Ohm)\n",
+ "R2=68.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=180 #Load Resistance(Ohm)\n",
+ "RC=120 #Collector resistance(Ohm)\n",
+ "\n",
+ "VB=VCC*(R2/(R1+R2)) #Base voltage(V)\n",
+ "VE=math.ceil(VB-VBE) #Emitter voltage(V)\n",
+ "IE=VE/RE #Emitter current(A)\n",
+ "ICQ=IE #collector current (A)\n",
+ "VC=VCC-(ICQ*RC) #collector voltage(V)\n",
+ "VCEQ=VC-VE #collector-emitter voltage (V) \n",
+ "PDQ=VCEQ*ICQ #power dissipation(W)\n",
+ "I_bias=VCC/(R1+R2) #bias current(mA)\n",
+ "Idc=I_bias+ICQ #dc current(mA)\n",
+ "Pdc=VCC*Idc #dc input power to stage(W)\n",
+ "Pout=0.225 #Output power as per example 12-3 (W)\n",
+ "n=(Pout/Pdc)*100 #efficiency of stage\n",
+ "\n",
+ "print 'Power dissipation PDQ = ',PDQ,'W'\n",
+ "print 'efficiency of stage n = ',round(n,2),'%'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Power dissipation PDQ = 1.35 W\n",
+ "efficiency of stage n = 3.68 %\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-6, Page 391"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "VCC=12 #collector voltage(V)\n",
+ "RE=16 #Emitter resistance(Ohm)\n",
+ "R1=50.0 #Base resistance1 (Ohm)\n",
+ "R2=100.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=16 #Load Resistance(Ohm)\n",
+ "\n",
+ "VB=VCC*(R2/(R1+R2)) #Base voltage(V)\n",
+ "VE=(VB-VBE) #Emitter voltage(V)\n",
+ "IE=VE/RE #Emitter current(A)\n",
+ "ICQ=IE #collector current (A)\n",
+ "VCEQ=VCC-VE #collector-emitter voltage (V) \n",
+ "re=RE*RL/(RE+RL) #ac emitter resistance(Ohm)\n",
+ "\n",
+ "print 'Collector current ICQ = ',ICQ*1000,'mA'\n",
+ "print 'collector-emitter voltage VCEQ = ',VCEQ,'V'\n",
+ "print 'ac collector resistance re = ',re,'Ohm'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Collector current ICQ = 456.25 mA\n",
+ "collector-emitter voltage VCEQ = 4.7 V\n",
+ "ac collector resistance re = 8 Ohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 89
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-7, Page 393"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "VCC=12 #collector voltage(V)\n",
+ "RE=16 #Emitter resistance(Ohm)\n",
+ "R1=50.0 #Base resistance1 (Ohm)\n",
+ "R2=100.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=16 #Load Resistance(Ohm)\n",
+ "\n",
+ "ICQ=456 #collector current (mA)\n",
+ "VCEQ=4.7 #collector-emitter voltage (V) \n",
+ "re=8.0 #ac emitter resistance(Ohm)\n",
+ "\n",
+ "ic_sat=(1000*(VCEQ/re))+ICQ #ic(sarturation) (mA)\n",
+ "VCE_cut=VCEQ+(ICQ*re)/1000 #VCE(cut-off) (V)\n",
+ "MP1=ICQ*re/1000\n",
+ "MP2=VCEQ\n",
+ "MPP=2*(min(MP1,MP2)) #maximum peak-to-peak voltage (V)\n",
+ "\n",
+ "print 'ic(sarturation) = ',ic_sat/1000,'A'\n",
+ "print 'VCE(cut-off) = ',VCE_cut,'V'\n",
+ "print 'maximum peak-to-peak voltage MPP = ',MPP,'V'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "ic(sarturation) = 1.0435 A\n",
+ "VCE(cut-off) = 8.348 V\n",
+ "maximum peak-to-peak voltage MPP = 7.296 V\n"
+ ]
+ }
+ ],
+ "prompt_number": 56
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-8, Page 397"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "VCC=20 #collector voltage(V)\n",
+ "R1=100.0 #Base resistance1 (Ohm)\n",
+ "R2=100.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=8.0 #Load Resistance(Ohm)\n",
+ "\n",
+ "MPP=VCC #maximum peak-to-peak voltage (V)\n",
+ "PD_max=MPP**2/(40*RL) #Maximum power dissipation(W)\n",
+ "Pout_max=MPP**2/(8*RL) #Maximum output power(W)\n",
+ "\n",
+ "print 'Maximum power dissipation PD_max = ',PD_max,'W'\n",
+ "print 'Maximum output power Pout_max = ',Pout_max,'W'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Maximum power dissipation PD_max = 1.25 W\n",
+ "Maximum output power Pout_max = 6.25 W\n"
+ ]
+ }
+ ],
+ "prompt_number": 58
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-9, Page 398"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "import math\n",
+ "\n",
+ "VCC=20 #collector voltage(V)\n",
+ "R1=100.0 #Base resistance1 (Ohm)\n",
+ "R2=100.0 #Base resistance2 (Ohm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=8.0 #Load Resistance(Ohm)\n",
+ "Ra=15 #adjustable resistor(Ohm)\n",
+ "\n",
+ "VCEQ=VCC/2 #collector-emitter voltage (V) \n",
+ "I_bias=VCC/(R1+R2+Ra) #bias current(mA)\n",
+ "Ic_sat=VCEQ/RL #ic(sarturation) (mA)\n",
+ "Iav=Ic_sat/math.pi #average current (A)\n",
+ "Idc=I_bias+Iav #dc current(mA)\n",
+ "Pdc=VCC*Idc #dc input power to stage(W)\n",
+ "Pout=6.25 #Output power as per example 12-8 (W)\n",
+ "n=(Pout/Pdc)*100 #efficiency of stage\n",
+ "\n",
+ "\n",
+ "print 'efficiency of stage n = ',round(n,2),'%'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "efficiency of stage n = 63.66 %\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-10, Page 400"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "VCC=20 #collector voltage(V)\n",
+ "R1=3.9 #Base resistance1 (KOhm)\n",
+ "R2=3.9 #Base resistance2 (KOhm)\n",
+ "VBE=0.7 #Base-emitter voltage drop(V)\n",
+ "RL=10.0 #Load Resistance(Ohm)\n",
+ "\n",
+ "VCEQ=VCC/2 #collector-emitter voltage (V) \n",
+ "I_bias=(VCC-(2*VBE))/(R1+R2) #bias current(mA)\n",
+ "Ic_sat=VCEQ/RL #ic(sarturation) (mA)\n",
+ "Iav=Ic_sat/math.pi #average current (A)\n",
+ "Idc=(I_bias/1000)+Iav #dc current(mA)\n",
+ "Pdc=VCC*Idc #dc input power to stage(W)\n",
+ "Pout=VCC**2/(8*RL) #Output power (W)\n",
+ "n=(Pout/Pdc)*100 #efficiency of stage\n",
+ "\n",
+ "print 'efficiency of stage n = ',round(n,2),'%'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "efficiency of stage n = 77.96 %\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-11, Page 405"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "L=2*10**-6 #inductance (H)\n",
+ "C=470*10**-12 #capacitance(F)\n",
+ "\n",
+ "fr=((2*math.pi)*((L*C)**0.5))**-1\n",
+ "\n",
+ "print 'Resonant frequency fr = ',round((fr*10**-6),2),'MHz'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Resonant frequency fr = 5.19 MHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-12, Page 410"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "fr=5.19*10**6 #frequency as per previous example(Hz)\n",
+ "L=2*10**-6 #inductance (H)\n",
+ "C=470*10**-12 #capacitance(F)\n",
+ "QL=100 #quality factor of coil\n",
+ "RL=1 #Load resistance(KOhm)\n",
+ "\n",
+ "XL=2*math.pi*fr*L #inductive impedance(Ohm)\n",
+ "Rp=QL*XL/1000 #Eq. parallel resistance of coil(KOhm)\n",
+ "rc=1000*Rp*RL/(Rp+RL) #ac collector resistance(Ohm)\n",
+ "Q=rc/XL #Q of overall circuit\n",
+ "BW=(fr/Q/1000) #band width of amplifier(KHz)\n",
+ "\n",
+ "print 'band width of amplifier BW = ',round(BW,2),'KHz'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "band width of amplifier BW = 390.39 KHz\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-13, Page 411"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "import math # This will import math module\n",
+ "\n",
+ "VCC=15 #collector voltage(V)\n",
+ "rc=867.0 #ac collector resistance as per preceding example (Ohm)\n",
+ "\n",
+ "MPP=2*VCC #Maximum peak-to-peak voltage(V)\n",
+ "PD=1000*MPP**2/(40*rc) #worst-case power dissipation(mW)\n",
+ "\n",
+ "print 'Worst-case power dissipation PD = ',math.ceil(PD),'mW'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Worst-case power dissipation PD = 26.0 mW\n"
+ ]
+ }
+ ],
+ "prompt_number": 91
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 12-14, Page 414"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "PD=625 #maximum power rating at 25 deg C(mW)\n",
+ "D=5 #Derating factor(mW/deg C)\n",
+ "TA=50 #ambient temperature(deg C)\n",
+ "\n",
+ "DP=D*(TA-25) #difference in power(mW) \n",
+ "PD_max=PD-DP #maximum power rating(mW)\n",
+ "\n",
+ "print 'Maximum power rating PD_max = ',PD_max,'mW'"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Maximum power rating PD_max = 500 mW\n"
+ ]
+ }
+ ],
+ "prompt_number": 94
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |