From d36fc3b8f88cc3108ffff6151e376b619b9abb01 Mon Sep 17 00:00:00 2001 From: kinitrupti Date: Fri, 12 May 2017 18:40:35 +0530 Subject: Revised list of TBCs --- Electronic_Principles/Chapter_15.ipynb | 383 +++++++++++++++++++++++++++++++++ 1 file changed, 383 insertions(+) create mode 100755 Electronic_Principles/Chapter_15.ipynb (limited to 'Electronic_Principles/Chapter_15.ipynb') diff --git a/Electronic_Principles/Chapter_15.ipynb b/Electronic_Principles/Chapter_15.ipynb new file mode 100755 index 00000000..b47db517 --- /dev/null +++ b/Electronic_Principles/Chapter_15.ipynb @@ -0,0 +1,383 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "CHAPTER 15 Thyristors" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-1, Page 521" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "VB=10 #breakover voltage(V)\n", + "Vin=15 #input voltage(V)\n", + "R=100.0 #resistance (Ohm)\n", + "\n", + "I1=1000*Vin/R #diode current ideally(mA)\n", + "I2=1000*(Vin-0.7)/R #diode current with second approx.(mA)\n", + "I3=1000*(Vin-0.9)/R #diode current more accurately(mA)\n", + "\n", + "print 'Diode current ideally ID1 = ',I1,'mA'\n", + "print 'Diode current with second approx. ID2 = ',I2,'mA'\n", + "print 'Diode current more accurately ID3 = ',I3,'mA'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Diode current ideally ID1 = 150.0 mA\n", + "Diode current with second approx. ID2 = 143.0 mA\n", + "Diode current more accurately ID3 = 141.0 mA\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-2, Page 525" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "Ih=4*10**-3 #holding current(mA)\n", + "R=100.0 #resistance (Ohm)\n", + "Vs=15 #input voltage (V)\n", + "\n", + "Vin=0.7+(Ih*R) #new input voltage(V)\n", + "\n", + "print 'New input voltage Vin = ',Vin,'V'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "New input voltage Vin = 1.1 V\n" + ] + } + ], + "prompt_number": 7 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-3, Page 525" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "R=2.0*10**3 #resistance (Ohm)\n", + "C=0.02*10**-6 #capacitance (F)\n", + "VB=10 #breakdown voltage(V)\n", + "\n", + "RC=R*C #Time constant(s)\n", + "T=0.2*RC #period (s)\n", + "f=T**-1 #frequency(Hz) \n", + "\n", + "print 'time constant RC = ',RC*10**6,'us'\n", + "print 'Period T = ',T*10**6,'us'\n", + "print 'Frequency = ',f/1000,'KHz'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "time constant RC = 40.0 us\n", + "Period T = 8.0 us\n", + "Frequency = 125.0 KHz\n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-4, Page 531" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "It=7*10**-3 #trigger current(mA)\n", + "R1=100.0 #resistance (Ohm)\n", + "R2=1*10**3 #resistance (Ohm)\n", + "Vt=0.75 #trigger voltage (V)\n", + "Ih=6*10**-3 #holding current(mA)\n", + "\n", + "Vin=Vt+(It*R2) #minimum input voltage(V)\n", + "VCC=0.7+(Ih*R1) #supply voltage for turning of SCR(V)\n", + "\n", + "print 'Minimum input voltage Vin = ',Vin,'V'\n", + "print 'supply voltage for turning of SCR VCC = ',VCC,'V'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Minimum input voltage Vin = 7.75 V\n", + "supply voltage for turning of SCR VCC = 1.3 V\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-5, Page 532" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "IGT=200*10**-6 #trigger current(mA)\n", + "VGT=1 #trigger voltage(V) \n", + "R1=900.0 #resistance (Ohm)\n", + "R2=100.0 #resistance (Ohm)\n", + "C=0.2*10**-6 #capacitance (F)\n", + "Vt=0.75 #trigger voltage (V)\n", + "Ih=6*10**-3 #holding current(mA)\n", + "R=1*10**3 #Resistance (Ohm) \n", + "\n", + "RTH=R1*R2/(R1+R2) #Thevenin resistance (Ohm)\n", + "Vin=VGT+(IGT*RTH) #input voltage needed to trigger(V)\n", + "Vp=10*Vin #Output voltage at SCR firing point(V)\n", + "RC=C*(R/2) #time constant (s)\n", + "T=RC*0.2 #period (s)\n", + "f=1/T #frequency (Hz)\n", + "\n", + "print 'peak output voltage Vpeak = ',Vp,'V'\n", + "print 'time constant RC = ',RC*10**6,'us'\n", + "print 'Period T = ',T*10**6,'us'\n", + "print 'Frequency = ',f/1000,'KHz'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "peak output voltage Vpeak = 10.18 V\n", + "time constant RC = 100.0 us\n", + "Period T = 20.0 us\n", + "Frequency = 50.0 KHz\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-6, Page 536" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "Vz=5.6 #breakdown voltage(V)\n", + "VGT1=0.75 #trigger voltage (V) \n", + "VGT2=1.5 #worst case maximum trigger voltage(V) \n", + "Vz2=6.16 #break down voltage with 10% tolerance (V)\n", + "\n", + "VCC1=Vz+VGT1 #supply voltage(V) \n", + "VCC2=VGT2+Vz2 #Over voltage (V)\n", + "\n", + "print 'supply voltage VCC1 = ',VCC1,'V'\n", + "print 'supply over voltage VCC2 = ',VCC2,'V'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "supply voltage VCC1 = 6.35 V\n", + "supply over voltage VCC2 = 7.66 V\n" + ] + } + ], + "prompt_number": 17 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-7, Page 539" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math # This will import math module\n", + "\n", + "C=0.1*10**-6 #capacitance (F)\n", + "f=60 #frequency (Hz)\n", + "R=26*10**3 #resistance(KOhm)\n", + "Vm=120 #input ac voltage(V)\n", + "\n", + "XC=(2*math.pi*f*C)**-1 #capacitive reactance(Ohm)\n", + "ZT=((R**2)+(XC**2))**0.5 #impedance (Ohm)\n", + "thetaz=math.atan2(-XC,R)*180/math.pi #angle (deg)\n", + "IC=Vm/ZT #Current through C(A)\n", + "VC=IC*XC #voltage across C(V)\n", + "thetac=180+thetaz #conduction angle(deg)\n", + "\n", + "print 'Capacitor reactance XC = ',round((XC/1000),2),'KOhm'\n", + "print 'impedance ZT = ',round((ZT/1000),2),'KOhm'\n", + "print 'firing angle = ',round(thetaz,2),'deg'\n", + "print 'Current through C, IC = ',round((IC*1000),2),'mA'\n", + "print 'voltage across C, VC = ',round(VC,2),'V'\n", + "print 'conduction angle = ',round(thetac,2),'deg'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Capacitor reactance XC = 26.53 KOhm\n", + "impedance ZT = 37.14 KOhm\n", + "firing angle = -45.57 deg\n", + "Current through C, IC = 3.23 mA\n", + "voltage across C, VC = 85.7 V\n", + "conduction angle = 134.43 deg\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-8, Page 546" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "C=1*10**-6 #capacitance (F)\n", + "R1=22.0 #resistance (Ohm)\n", + "R2=82*10**3 #resistance(KOhm)\n", + "Vs=75 #input voltage(V)\n", + "\n", + "I=Vs/R1 #current through 22Ohm resistor (A)\n", + "\n", + "print 'current through 22Ohm resistor I = ',round(I,2),'A'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "current through 22Ohm resistor I = 3.41 A\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 15-9, Page 547" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "Vdb=32.0 #diac break down voltage (V)\n", + "VTT=1 #triac trigger voltage(V)\n", + "\n", + "Vin=VTT+Vdb #input voltage for triggering triac\n", + "\n", + "print 'input voltage for triggering triac vin = ',Vin,'V'" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "input voltage for triggering triac vin = 33.0 V\n" + ] + } + ], + "prompt_number": 27 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit