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diff --git a/Solid_State_Pulse_Circuits_by_D_A_Bell/4-Transistor_switching.ipynb b/Solid_State_Pulse_Circuits_by_D_A_Bell/4-Transistor_switching.ipynb new file mode 100644 index 0000000..3798e47 --- /dev/null +++ b/Solid_State_Pulse_Circuits_by_D_A_Bell/4-Transistor_switching.ipynb @@ -0,0 +1,373 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 4: Transistor switching" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.10: Determine_output_voltage.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Determine output voltage when (a)Device is cutoff (b)Device is switched on\n", +"//Ex4.10\n", +"clc;\n", +"clear;\n", +"close;\n", +"Idf=0.25//Drain current at cutoff(in ns)\n", +"rd=40//Drain resistance at switched on(in ohm)\n", +"Vdd=15//Drain voltage(in volts)\n", +"Rd=6.8//Drain resistance(in kilo ohm)\n", +"Vo=Vdd-(Idf*Rd*10^(-6))\n", +"disp(Vo,'Output voltage when device is cutoff(in volts)=')\n", +"Id=Vdd/Rd\n", +"Vo2=Id*rd\n", +"disp(Vo2,'Output voltage when device is switched on(in milli volts)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.1: hfe_for_changed_resistor.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Determine (a)hfe (b)hfe for changed resistor\n", +"//Ex4.1\n", +"clc;\n", +"clear;\n", +"close;\n", +"Ib=0.2//Base current(in mA)\n", +"Vcc=10//Collector voltage(in volts)\n", +"Rc1=1//Collector resistor(in kilo ohm)\n", +"Rc2=220//Changed collector resistor(in ohm)\n", +"Ic1=Vcc/Rc1\n", +"h1=Ic1/Ib\n", +"disp(h1,'(a)hfe=')\n", +"Ic2=Vcc*1000/Rc2\n", +"h2=Ic2/Ib\n", +"disp(h2,'(b)hfe for changed resistor=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.2: Calculate_the_transistor_power_dissipation_at.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Calculate the transistor power dissipation at (a)Cutoff (b)Saturation (c)When Vce is 2V\n", +"//Ex4.2\n", +"clc;\n", +"clear;\n", +"close;\n", +"Vcc=10//Collector voltage(in volts)\n", +"Ic=50//Collector current(in nA)\n", +"Rc=1//Collector resistor(in kilo ohm)\n", +"Vs=0.2//Voltage of collector emitter junction at saturation(in volts)\n", +"Vce=2//Collector emitter voltage(in volts)\n", +"P1=Ic*Vcc/1000\n", +"disp(P1,'(a)Power dissipation at cutoff(in micro watt)=')\n", +"P2=(Vcc/Rc)*Vs\n", +"disp(P2,'(b)Power dissipation at saturation(in mW)=')\n", +"I=(Vcc-Vce)/Rc\n", +"P3=I*Vce\n", +"disp(P3,'(c)Power dissipation at given Vce(in mW)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.3: Before_input_pulse_is_applied.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Calculate Vce (a)Before input pulse is applied (b)at end of delay time (c)at end of turn on time (d)Total time \n", +"//Ex4.3\n", +"clc;\n", +"clear;\n", +"close;\n", +"Vcc=12//Collector voltage(in volts)\n", +"Rc=3.3//Collector resistor(in Kilo ohm)\n", +"pw=5//Pulse width of input voltage(in micro sec)\n", +"Ix=50//Collector cutoff current(in nA)\n", +"t=250//Switch off time(nA)\n", +"Vce=Vcc-(Ix*Rc*10^(-6))\n", +"disp(Vce,'(a)Collector emitter voltage before input pulse is applied(in volts)=')\n", +"Vce2=Vcc-(0.1*Vcc)\n", +"disp(Vce2,'(b)Collector emittter voltage at end of delay time(in volts)=')\n", +"Vce3=Vcc-(0.9*Vcc)\n", +"disp(Vce3,'(c)Collector emitter voltage at end of turn on time(in volts)=')\n", +"T=(t*10^(-3))+pw\n", +"disp(T,'(d)Total time from commencement of input to transistor switch off(in micro sec)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.4: Capacitance_that_can_give_max_turn_on_time.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Determine (a)Capacitance that can give max turn on time (b)Max frequency\n", +"//Ex4.4\n", +"clc;\n", +"clear;\n", +"close;\n", +"Rs=600//Source resistor(in ohm)\n", +"Rb=5.6//Base resistor(in kilo ohm)\n", +"t=70//Turn on time(in ns)\n", +"C=t*1000/(0.1*Rs)\n", +"disp(C,'(a)Required capacitance(in pF)=')\n", +"tre=2.3*Rb*C*10^(-3)\n", +"f=1000/(2*tre)\n", +"disp(f,'(b)Max Frequency(in Khz)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.5: Calculate_Rc_and_Rb.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Calculate Rc and Rb\n", +"//Ex4.5\n", +"clc;\n", +"clear;\n", +"close;\n", +"Vcc=12//Collector voltage(in volts)\n", +"V=3//Input voltage(in volts)\n", +"Ic=1//collector current(in mA)\n", +"Vce=0.2//Saturated collector emitter voltage(in volts)\n", +"hfe=70\n", +"Vbe=0.7//Base emitter voltage(in volts)\n", +"Rc=(Vcc-Vce)/Ic\n", +"Ib=Ic*1000/hfe\n", +"Rb=(V-Vbe)*1000/Ib\n", +"disp(Rb,Rc,'Rc and Rb(in kilo ohm)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.6: Determine_maximum_value_of_capacitor.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Determine maximum value of capacitor\n", +"//Ex4.6\n", +"clc;\n", +"clear;\n", +"close;\n", +"f=45//Frequency(in khz)\n", +"Rb=150//Base Resistor(in ohms)\n", +"t=1000/(2*f)\n", +"C=t*1000/(2.3*Rb)\n", +"disp(C,'Maxixmumvalue of capacitor(in pF)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.7: Design_a_transistor_by_determining_Rc.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Design a transistor by determining Rc,Rb and amplitude of output waveform\n", +"//Ex4.7\n", +"clc;\n", +"clear;\n", +"close;\n", +"E=10//Input voltage(in volts)\n", +"Vcc=15//Collector voltage(in volts)\n", +"R=100//Load resistance(in kilo ohm)\n", +"Vce=0.2//Saturted collector emitter voltage(in volts)\n", +"Vd=0.7//Diode forward voltage(in volts)\n", +"hfe=35\n", +"Vbe=0.7//Base emitter voltage(in volts)\n", +"Rc=R/10\n", +"Ic=(Vcc-Vce-Vd)/Rc\n", +"Ib=Ic/hfe\n", +"Rb=(E-Vbe-Vd)/Ib\n", +"Vmin=Vd+Vce\n", +"Vmax=(Vcc*R)/(R+Rc)\n", +"Vo=Vmax-Vmin\n", +"disp(Vo,Rb,Rc,'Rc,Rb(in kilo ohm),and amplitude of output waveform(in volts)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.8: Calculate_Rc_Rb_and_Cc.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Calculate Rc,Rb,and Cc\n", +"//Ex4.8\n", +"clc;\n", +"clear;\n", +"close;\n", +"Vcc=10//Collector voltage(in volts)\n", +"Vce=0.2//Saturated collector emitter voltage(in volts)\n", +"Ic=10//Collector current(in mA)\n", +"Vbe=0.7//Base emitter voltage(in volts)\n", +"hfe=100\n", +"Pw=1//Pulse width(in ms)\n", +"Vi=4//Input voltage(in volts)\n", +"Rc=(Vcc-Vce)*1000/Ic\n", +"Ib=Ic*1000/hfe\n", +"Rb=(Vcc-Vbe)*1000/Ib\n", +"Vb=Vi-Vbe-0.5\n", +"I=(Vcc+Vi)/Rb\n", +"Cc=I*Pw/Vb\n", +"disp(Cc,Rb,Rc,'Rc(in ohm),Rb(in kilo ohm),Cc(in micro farad)=')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 4.9: Determine_required_capacitance.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Caption:Determine required capacitance\n", +"//Ex4.9\n", +"clc;\n", +"clear;\n", +"close;\n", +"E=4//Input voltage(in volts)\n", +"Pw=1//Pulse width(in ms)\n", +"Rs=1//Source resistance(in kilo ohm)\n", +"Vce=0.2//Saturated Collector emitter voltage(in volts)\n", +"Rc=1//Collector resistance(in kilo ohm)\n", +"Vcc=10//Collector voltage(in volts)\n", +"hfe=100\n", +"Vbe=0.7//Base emitter voltage(in volts)\n", +"Rb=10//Base resistance(in kilo ohm)\n", +"Ic=(Vcc-Vce)/Rc\n", +"Ib=Ic*1000/hfe\n", +"Irb=Vbe*1000/Rb\n", +"ic=Ib+Irb\n", +"I=(E-Vbe)/Rs\n", +"C=Pw/(Rs*(log(I*1000/ic)))\n", +"disp(C,'Required capacitance(in micro farad)=')" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |