From 83c1bfceb1b681b4bb7253b47491be2d8b2014a1 Mon Sep 17 00:00:00 2001
From: debashisdeb
Date: Fri, 20 Jun 2014 15:42:42 +0530
Subject: removing problem statements

---
 Electronic_Principles_/Chapter_11_New.ipynb | 56 -----------------------------
 1 file changed, 56 deletions(-)

(limited to 'Electronic_Principles_/Chapter_11_New.ipynb')

diff --git a/Electronic_Principles_/Chapter_11_New.ipynb b/Electronic_Principles_/Chapter_11_New.ipynb
index 5a7be77e..9065b138 100644
--- a/Electronic_Principles_/Chapter_11_New.ipynb
+++ b/Electronic_Principles_/Chapter_11_New.ipynb
@@ -27,10 +27,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.1.py\n",
-      "#What is the input impedance of the base & stage. B=200.\n",
       "\n",
-      "#Variable declaration\n",
       "VCC=10                #collector voltage(V)\n",
       "RE=4.3                #Emitter resistance(KOhm)\n",
       "R1=10                 #Base resistance1 (KOhm)\n",
@@ -41,7 +38,6 @@
       "RG=0.6                #internal resistance of source(KOhm)\n",
       "B=200                   #current gain \n",
       "\n",
-      "#Calculation\n",
       "VBB=VCC/2               #Base voltage(V)\n",
       "VE=VBB-VBE              #Emitter voltage(V)\n",
       "IE=VE/RE                #Emitter current(mA)\n",
@@ -50,7 +46,6 @@
       "Zin_base=(re+(re1/1000))*B                               #input impedance of base(KOhm)\n",
       "Zin_stage=((R1**-1)+(Zin_base**-1)+(R2**-1))**-1  #input impedance of stage(KOhm)\n",
       "\n",
-      "#Result\n",
       "print 'input impedance of stage Zin(base) = ',round(Zin_base,2),'KOhm'\n",
       "print 'input impedance of stage Zin(stage) = ',round(Zin_stage,2),'KOhm'"
      ],
@@ -80,20 +75,15 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.2.py\n",
-      "#Assuming B=200, What is ac input voltage to emitter follower of figure 11-3?\n",
       "\n",
-      "#Variable declaration\n",
       "re=3.03               #Emitter resistance(KOhm)\n",
       "VG=1                  #Input voltage(mV)\n",
       "RG=0.6                #internal resistance of source(KOhm)\n",
       "B=200                 #current gain \n",
       "Zin=5                 #input impedance(KOhm)\n",
       "\n",
-      "#Calculation\n",
       "Vin=(Zin/(Zin+RG))*VG #input voltage(V)\n",
       "\n",
-      "#Result\n",
       "print 'Input voltage Vin = ',round(Vin,2),'V'"
      ],
      "language": "python",
@@ -121,10 +111,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.3.py\n",
-      "#What is the voltage gain of the emitter follower of figure 11-5? If B=150, what is the ac load voltage? \n",
       "\n",
-      "#Variable declaration\n",
       "VCC=15                #collector voltage(V)\n",
       "RE=2.2                #Emitter resistance(KOhm)\n",
       "R1=4.7                #Base resistance1 (KOhm)\n",
@@ -135,7 +122,6 @@
       "RG=0.6                #internal resistance of source(KOhm)\n",
       "B=150                   #current gain \n",
       "\n",
-      "#Calculation\n",
       "VBB=VCC/2.0             #Base voltage(V)\n",
       "VE=VBB-VBE              #Emitter voltage(V)\n",
       "IE=VE/RE                #Emitter current(mA)\n",
@@ -148,7 +134,6 @@
       "Vout=Av*Vin                            #output voltage(V)\n",
       "\n",
       "\n",
-      "#Result\n",
       "print 'input impedance of stage Zin(base) = ',round(Zin_base,2),'KOhm'\n",
       "print 'input impedance of stage Zin(stage) = ',Zin_stage,'KOhm'\n",
       "print 'voltage gain of emitter follower Av = ',round(Av,3)\n",
@@ -182,17 +167,12 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.4.py\n",
-      "#Calculate the output impedance of the emitter follower of figure 11-9a.\n",
       "\n",
-      "#Variable declaration\n",
       "RG=600                #internal resistance of source(KOhm)\n",
       "B=300                 #current gain \n",
       "\n",
-      "#Calculation\n",
       "Zout=RG/B             #Output impedance(KOhm)\n",
       "\n",
-      "#Result\n",
       "print 'Output impedance Zout = ',Zout,'Ohm'"
      ],
      "language": "python",
@@ -220,10 +200,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.5.py\n",
-      "#Calculate the output impedance in figure 11-9a.\n",
       "\n",
-      "#Variable declaration\n",
       "VCC=30                #collector voltage(V)\n",
       "RE=0.1                #Emitter resistance(KOhm)\n",
       "R1=10                 #Base resistance1 (KOhm)\n",
@@ -233,7 +210,6 @@
       "RG=0.6                #internal resistance of source(KOhm)\n",
       "B=300                 #current gain \n",
       "\n",
-      "#Calculation\n",
       "VBQ=VCC/2.0             #Base voltage(V)\n",
       "VEQ=VBQ                 #Emitter voltage(V), ignore VBE\n",
       "IEQ=VEQ/RE              #Emitter current(mA)\n",
@@ -243,7 +219,6 @@
       "Ze=Z+re                                  #impedance looking back into emitter(Ohm)\n",
       "Zout=(((RE*1000)**-1)+(Ze**-1))**-1             #Output impedance(Ohm)\n",
       "\n",
-      "#Result\n",
       "print 'Output impedance is Zout = ',round(Zout,2),'Ohm'"
      ],
      "language": "python",
@@ -271,10 +246,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.6.py\n",
-      "#What is the voltage gain of the CE stage in figure 11-10 for B = 100? \n",
       "\n",
-      "#Variable declaration\n",
       "VCC=10                  #collector voltage(V)\n",
       "RE=0.68                 #Emitter resistance(KOhm)\n",
       "RC=3.6                  #Collector resistance (KOhm)\n",
@@ -286,7 +258,6 @@
       "RL=0.27                 #Load resistance(KOhm)\n",
       "B=100                   #current gain \n",
       "\n",
-      "#Calculation\n",
       "VBB=(R1*R2/(R1+R2))     #Base voltage(V)\n",
       "VE=VBB-VBE              #Emitter voltage(V)\n",
       "IE=VE/RE                #Emitter current(mA)\n",
@@ -295,7 +266,6 @@
       "rc=((RC**-1)+(Zin**-1))**-1 #ac collector resistance(KOhm)\n",
       "Av=rc/(re/1000)             #voltage gain of stage\n",
       "\n",
-      "#Result\n",
       "print 'voltage gain of CE stage Av = ',round(Av,2)"
      ],
      "language": "python",
@@ -323,11 +293,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.7.py\n",
-      "#Emitter follower is removed in fig 11-10 and capacitor is used to couple the ac signal to RL = 270 Ohm. \n",
-      "#What is the voltage gain of CE amplifier?\n",
       "\n",
-      "#Variable declaration\n",
       "VCC=10                  #collector voltage(V)\n",
       "RE=0.68                 #Emitter resistance(KOhm)\n",
       "RC=3.6                  #Collector resistance (KOhm)\n",
@@ -339,7 +305,6 @@
       "RL=0.27                 #Load resistance(KOhm)\n",
       "B=100                   #current gain \n",
       "\n",
-      "#Calculation\n",
       "VBB=10*(R2/(R1+R2))     #Base voltage(V)\n",
       "VE=VBB-VBE              #Emitter voltage(V)\n",
       "IE=VE/RE                #Emitter current(mA)\n",
@@ -347,7 +312,6 @@
       "rc=((RC**-1)+(RL**-1))**-1 #ac collector resistance(KOhm)\n",
       "Av=rc/(re/1000)             #voltage gain of stage\n",
       "\n",
-      "#Result\n",
       "print 'voltage gain of CE stage Av = ',round(Av,2)"
      ],
      "language": "python",
@@ -375,10 +339,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.8.py\n",
-      "#If each transistor of figure 11-13 has B=100, find overall current gain, IB of Q1 & input impedance at base of Q1?\n",
       "\n",
-      "#Variable declaration\n",
       "VCC=15                   #collector voltage(V)\n",
       "RE=0.06                  #Emitter resistance(KOhm)\n",
       "R1=10.0                    #Base resistance1 (KOhm)\n",
@@ -389,7 +350,6 @@
       "B1=100                   #current gain of Q1\n",
       "B2=100                   #current gain of Q2\n",
       "\n",
-      "#Calculation\n",
       "B=B1*B2                 #Overall current gain\n",
       "VBB=15*(R2/(R1+R2))  #Base voltage(V)\n",
       "VE=VBB-(2*VBE)              #Emitter voltage(V)\n",
@@ -400,7 +360,6 @@
       "re=((RE**-1)+(RL**-1))**-1 #ac emitter resistance(KOhm)\n",
       "Zin_base=B*re              #input impedance of Q1(KOhm)\n",
       "\n",
-      "#Result\n",
       "print 'Overall current gain B = ',B\n",
       "print 'base current of Q1 IB1 = ',round(IB1,2),'uA'\n",
       "print 'input impedance at base of Q1 Zin(base) = ',Zin_base,'KOhm'"
@@ -432,24 +391,19 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.9.py\n",
-      "#Figure 11-16 shows a zener follower. find output voltage & zener current for Bdc=100.\n",
       "\n",
-      "#Variable declaration\n",
       "Vin=20                   #input voltage (V)\n",
       "RL=15                    #Load resistance(Ohm)\n",
       "Vz=10                    #voltage across zener(V)\n",
       "B=100                    #current gain\n",
       "Rs=680.0                 #series resistor(Ohm)\n",
       "\n",
-      "#Calculation\n",
       "Vout=Vz-0.7              #Output voltage approx.(V)\n",
       "Iout=Vout/RL             #Load current(A)\n",
       "IB=Iout*1000/B           #base current(mA)\n",
       "Is=(Vin-Vz)*1000/Rs      #current through series resistor(mA)\n",
       "Iz=Is-IB                 #zener current(mA)\n",
       "\n",
-      "#Result\n",
       "print 'output voltage Vout = ',Vout,'V'\n",
       "print 'Zener current Iz = ',round(Iz,2),'mA'"
      ],
@@ -479,10 +433,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.10.py\n",
-      "#What is the output voltage in figure 11-17?\n",
       "\n",
-      "#Variable declaration\n",
       "Vin=30                   #input voltage (V)\n",
       "RL=100                   #Load resistance(Ohm)\n",
       "Vz=6.2                   #voltage across zener(V)\n",
@@ -491,12 +442,10 @@
       "R1=1                     #Resistor (KOhm)\n",
       "R2=2                     #Resistor (KOhm)\n",
       "\n",
-      "#Calculation\n",
       "Vout=(Vz+0.7)*(R1+R2)/R1    #Output voltage approx.(V)\n",
       "I1=(Vz+0.7)/R1              #Load current(A)\n",
       "Vout=I1*(R1+R2)             #Output voltage(V)\n",
       "\n",
-      "#Result\n",
       "print 'output voltage Vout = ',Vout,'V'"
      ],
      "language": "python",
@@ -524,10 +473,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Example 11.11.py\n",
-      "#What is the output voltage in figure 11-20?\n",
       "\n",
-      "#Variable declaration\n",
       "VG=2                    #AC input voltage (mV)\n",
       "Vs=10                    #supply volatge(V)\n",
       "RL=10                    #Load resistance(KOhm)\n",
@@ -537,7 +483,6 @@
       "RC=3.6                   #collector resistor (KOhm)\n",
       "RE=2.2                   #emitter resistance(KOhm)\n",
       "\n",
-      "#Calculation\n",
       "VB=Vs*R2/(R1+R2)              #Base voltage(V)\n",
       "IE=(VB-0.7)*1000/RE           #emitter current(uA)\n",
       "re=(25/IE)*1000               #ac resistance(Ohm)\n",
@@ -548,7 +493,6 @@
       "Vin=(Zin/(Zin+RG))*VG              #input voltage(V)\n",
       "Vout=Av*Vin                        #output voltage(mV)\n",
       "\n",
-      "#Result\n",
       "print 'output voltage Vout = ',round(Vout,2),'mVpp'"
      ],
      "language": "python",
-- 
cgit