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diff --git a/Semiconductor_Circuit_Approximations_by_Malvino/12-JFETS.ipynb b/Semiconductor_Circuit_Approximations_by_Malvino/12-JFETS.ipynb new file mode 100644 index 0000000..e185c41 --- /dev/null +++ b/Semiconductor_Circuit_Approximations_by_Malvino/12-JFETS.ipynb @@ -0,0 +1,178 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 12: JFETS" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12.1: Source_voltage_to_ground.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// Example 12.1\n", +"format('v',5)\n", +"clc;\n", +"clear;\n", +"close;\n", +"// given data\n", +"R1= 20;// in kΩ\n", +"R2= 10;// in kΩ\n", +"R_E= 10;// in kΩ\n", +"R_D= 8.2;// in kΩ\n", +"V_G= 10;// in V\n", +"V_BE= 0.7;// in V\n", +"V_GS= -2;// in V\n", +"V_DD= 30;// in V\n", +"V_B= R2*V_DD/(R1+R2);// in V\n", +"I_E= (V_B-V_BE)/R_E;// in mA\n", +"I_D= I_E;// in mA\n", +"// The dc voltage from the drain to ground \n", +"V_D= V_DD-I_D*R_D;// in V\n", +"// The source voltage to ground \n", +"Vs= V_G-V_GS;// in V\n", +"disp(V_D,'The dc voltage from the drain to ground in volts is : ');\n", +"disp(Vs,'The source voltage to ground in volts is : ')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12.2: Transconductance.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// Example 12.2\n", +"format('v',6)\n", +"clc;\n", +"clear;\n", +"close;\n", +"// given data\n", +"gmo= 3000;// in µmhoS\n", +"V_GSoff= -4;// in V\n", +"I_DSS= 10;// in mA\n", +"disp('Part (i) When V_GS= -1');\n", +"V_GS= -1;// in V\n", +"// The value of gm \n", +"gm= gmo*(1-V_GS/V_GSoff);// in µS\n", +"disp(gm,'The value of gm in µS is : ')\n", +"disp('Part (ii) When I_D= 2.5 mA')\n", +"I_D= 2.5;// in mA\n", +"// The value of gm \n", +"gm= gmo*2*I_D/I_DSS;// in µS\n", +"disp(gm,'The value of gm in µS is : ')" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12.3: Output_voltage.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// Example 12.3\n", +"format('v',6)\n", +"clc;\n", +"clear;\n", +"close;\n", +"// given data\n", +"gm= 2000;// in µS\n", +"gm=gm*10^-6;// in S\n", +"R_D= 4.7;// in kΩ\n", +"Vin= 2;// in mV\n", +"R_L= 10;// in kΩ\n", +"r_D= R_D*R_L/(R_D+R_L);// in kΩ\n", +"r_D= r_D*10^3;// in Ω\n", +"A= gm*r_D;// unit less\n", +"// The output voltage \n", +"Vout= A*Vin;// in mV\n", +"disp(Vout,'The output voltage in mV is : ')\n", +"\n", +"// Note: The calculated value of A in the book is wrong. Correct value of A is : 6.39, So the answer in the book is wrong." + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 12.4: Voltage_gai.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// Example 12.4\n", +"format('v',6)\n", +"clc;\n", +"clear;\n", +"close;\n", +"// given data\n", +"R_D= 7.5;// in kΩ\n", +"R_L= 3;// in kΩ\n", +"r_s= R_D*R_L/(R_D+R_L);// in kΩ\n", +"r_s= r_s*10^3;// in Ω\n", +"gm= 2500*10^-6;// in S\n", +"// The voltage gain \n", +"A= gm*r_s/(1+gm*r_s);// unit less\n", +"disp(A,'The voltage gain is : ')" + ] + } +], +"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 +} |