{
"cells": [
 {
		   "cell_type": "markdown",
	   "metadata": {},
	   "source": [
       "# Chapter 2: semiconductor diodes"
	   ]
	},
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 1.1: forward_and_reverse_resistance.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.1\n",
"//page 37\n",
"printf('\n')\n",
"printf('given')\n",
"disp('a)')\n",
"If=100*10^-3;Vf=.75;//given\n",
"disp('forward resistance')\n",
"Rf=Vf/If;\n",
"printf('forward resistnace is %3.1fohm\n',Rf)\n",
"disp('b)')\n",
"Vr=50;Ir=100*10^-9;\n",
"Rr=(Vr/Ir);\n",
"printf('reverse resistnace is %3.0fohm\n',Rr)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.10: diode_Vf_and_junction_dynamic_resistance.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.10\n",
"//page 49\n",
"printf('\n')\n",
"printf('given')\n",
"Vf1=.7;Vf=-1.8*10^-3;If=26*10^-3;\n",
"T=100-25;\n",
"Vf2=Vf1+(T*Vf);\n",
"printf(' voltage at 100C is %3.3fV\n',Vf2)\n",
"disp('At 25C')\n",
"T1=25;\n",
"rd=(26*10^-3/If)*((T1+273)/298);\n",
"printf(' resistance at 25 C is %dohm\n',rd)\n",
"disp(' At 100C')\n",
"T2=100;\n",
"rd=(26*10^-3/If)*((T2+273)/298);\n",
"printf(' resistance at 100 C is %3.2fohm\n',rd)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.11: diffusion_capacitance.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.11\n",
"//page 51\n",
"printf('\n')\n",
"printf('given')\n",
"If=10*10^-3;Vf=.7;t=70*10^-9;\n",
"Cd=((t*If)/Vf)*10^9;\n",
"printf(' diffusion capacitance is %dnF\n',Cd)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.12: minimum_fall_times.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.12\n",
"//page 53\n",
"printf('\n')\n",
"printf('given')\n",
"disp('A')\n",
"trr=10*10^-9;\n",
"tf=10*trr*10^9\n",
"printf('minimum fall times is %dns\n',tf)\n",
"disp('B)')\n",
"trr=3;\n",
"tf=10*trr;\n",
"printf('minimum fall times is %dns\n',tf)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.14: resistor_for_R1_and_appropriate_scale.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.14\n",
"//page 58\n",
"printf('\n')\n",
"printf('given')\n",
"Io=75*10^-3;\n",
"//vertical scale of 5mA/cm \n",
"If=Io/5*10^-3\n",
"R1=15/(75*10^-3)\n",
"P=((Io)^2)*R1"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.15: maximum_current.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.15\n",
"//page 63\n",
"printf('\n')\n",
"printf('given')\n",
"Vz=7.5;Pd=400*10^-3;D=3.2*10^-3;\n",
"Izm=Pd/Vz\n",
"printf('current at 50C is %3.3fA\n',Izm)\n",
"disp('At 100C')\n",
"P2=Pd-((100-50)*D)\n",
"printf(' power at 100C is %3.3fW\n',P2)\n",
"Izm=P2/Vz;\n",
"printf(' current at 100C is %3.3fA\n',Izm)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.16: diode_current_and_power_dissipation.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.16\n",
"//page 64\n",
"printf('\n')\n",
"printf('given')\n",
"E=20;R1=620;Vz=7.5;\n",
"Vr1=E-Vz\n",
"Iz=Vr1/R1;\n",
"printf(' diode current is %3.5fA\n',Iz)\n",
"Pd=Vz*Iz;\n",
"printf( 'power dissipation is %3.3fW\n',Pd)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.17: upper_and_lower_limit_of_Vz.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.17\n",
"//page 64\n",
"printf('\n')\n",
"printf('given')\n",
"Vz=4.3;Zz=22;Iz=20*10^-3;\n",
"Iz1=5*10^-3;//change in current\n",
"Vz1=Iz1*Zz;\n",
"Vzmax=Vz+Vz1;\n",
"printf(' maximum voltage is %3.3fV\n',Vzmax)\n",
"Vzmin=Vz-Vz1;\n",
"printf('minimum voltage is %3.3fV\n',Vzmin)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.1: dynamic_resistance.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.2\n",
"//page 39\n",
"printf('\n')\n",
"printf('given')\n",
"If=70*10^-3;\n",
"rd=(26*10^-3)/If;\n",
"printf('dynamic resistance is %3.2fohm\n',rd)\n",
"disp('a)')\n",
"If=60*10^-3;Vf=.025;\n",
"rd=Vf/If;\n",
"printf('dynamic resistance is %3.2fohm\n',rd)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.3: diode_current.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.3\n",
"//page 40\n",
"printf('\n')\n",
"printf('given')\n",
"R1=4.7*10^3;E=15;Vf=.7;\n",
"disp('diode current is E=If*R1+Vf')\n",
"If=((E-Vf)/R1)*10^3;\n",
"printf(' diode current is %3.2fmA\n',If) "
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.5: forward_current.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.5\n",
"//page 41\n",
"printf('\n')\n",
"printf('given')\n",
"E=1.5;Vf=.7;R1=10;rd=.25;\n",
"disp('a)')\n",
"If=(E-Vf)/R1;\n",
"printf(' forward current is %3.3fmA\n',If)\n",
"disp('b)')\n",
"If=(E-Vf)/(R1+rd);\n",
"printf(' forward current is %3.3fmA\n',If)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.6: dc_load_line.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.6\n",
"//page 43\n",
"printf('\n')\n",
"printf('given')\n",
"If=0;Vf=5;R1=100;\n",
"E=(If*R1)+Vf\n",
"disp('E')\n",
"disp('B)')\n",
"Vf=0;E=5;R1=100;\n",
"If=(E/R1)*1000;\n",
"printf('resistance is %dmA\n',If) "
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.8: new_supply_voltage.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.8\n",
"//page 45\n",
"printf('\n')\n",
"printf('given')\n",
"If=50*10^-3;Vf=1.1;R1=100;\n",
"Vf1=If*R1;\n",
"disp('Vf1')\n",
"E=Vf1+Vf\n",
"printf(' new supply voltage is %3.1fV\n',E)"
   ]
   }
,
{
		   "cell_type": "markdown",
		   "metadata": {},
		   "source": [
			"## Example 2.9: maximum_forward_current.sce"
		   ]
		  },
  {
"cell_type": "code",
	   "execution_count": null,
	   "metadata": {
	    "collapsed": true
	   },
	   "outputs": [],
"source": [
"//chapter 2\n",
"//example 2.9\n",
"//page 48\n",
"printf('\n')\n",
"printf('given')\n",
"P1=700*10^-3;Vf=.7;\n",
"//at 25C\n",
"If=P1/Vf;\n",
"disp('If')\n",
"//at 65C\n",
"D=5*10^-3;T=65-25;\n",
"P2=P1-D*T\n",
"If=P2/Vf;\n",
"printf( 'maximum forward current at 65C is %3.3fA\n',If)"
   ]
   }
],
"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
}