diff options
Diffstat (limited to 'Basic_Electronics_Electronics_Engineering_by_J_B_Gupta/chapter10.ipynb')
| -rwxr-xr-x | Basic_Electronics_Electronics_Engineering_by_J_B_Gupta/chapter10.ipynb | 934 |
1 files changed, 934 insertions, 0 deletions
diff --git a/Basic_Electronics_Electronics_Engineering_by_J_B_Gupta/chapter10.ipynb b/Basic_Electronics_Electronics_Engineering_by_J_B_Gupta/chapter10.ipynb new file mode 100755 index 00000000..ff782990 --- /dev/null +++ b/Basic_Electronics_Electronics_Engineering_by_J_B_Gupta/chapter10.ipynb @@ -0,0 +1,934 @@ +{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "#Chapter 10 , Field Effect Transistors"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.1 , Page Number 344"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Gate-to-source resistance : 100.0 Mega-ohm.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VGS = 10.0 #Gate-source voltage (in volts)\n",
+ "IG = 0.1 * 10**-6 #Gate current (in Ampere)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "RGS = VGS/IG #Gate-to-source resistance (in ohm)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Gate-to-source resistance : \",RGS*10**-6,\"Mega-ohm.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.2 , Page Number 344"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "AC drain resistance of the JFET : 12.5 kilo-ohm.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "dVDS = 1.5 #Change in drain-source voltage (in volts)\n",
+ "dID = 120.0 * 10**-6 #Change in drain current (in Ampere)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "rd = dVDS/dID #AC drain resistance (in ohm) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"AC drain resistance of the JFET : \",rd*10**-3,\"kilo-ohm.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.3 , Page Number 344"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Transconductance : 2000.0 micro-siemens.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "dID = 0.3 * 10**-3 #Change in drain current (in Ampere)\n",
+ "dVGS = 0.15 #Changein gate-to-source voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "gm = dID/dVGS #Transconductance (in siemen) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Transconductance : \",gm*10**6,\"micro-siemens.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.4 , Page Number 345"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "AC drain resistance : 35.0 kilo-ohm.\n",
+ "Transconductance : 2.8 mA/V.\n",
+ "Amplification factor : 98.0 .\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "dVDS = 7.0 #Change in drain-source voltage (in volts)\n",
+ "dID1 = 0.2 * 10**-3 #Change in drain current1 (in Ampere)\n",
+ "dID2 = -0.7 * 10**-3 #Change in drain current2 (in Ampere)\n",
+ "dVGS = -0.25 #Changein gate-to-source voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "rd = dVDS/dID1 #AC drain resistance (in ohm)\n",
+ "gm = dID2/dVGS #Transconductance (in Ampere per volt)\n",
+ "u = rd*gm #Amplification factor\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"AC drain resistance : \",rd*10**-3,\"kilo-ohm.\"\n",
+ "print \"Transconductance : \",gm*10**3,\"mA/V.\"\n",
+ "print \"Amplification factor : \",u,\".\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.5 , Page Number 345"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Transconductance : 2.22 mA/V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "IDSS = 10.0 * 10**-3 #Drain-source saturation current (in Ampere)\n",
+ "Vp = -4.5 #Pinch-off voltage (in volts)\n",
+ "IDS = 2.5 * 10**-3 #Drain-source voltage (in volts) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGS = Vp*(1-(IDS/IDSS)**0.5) #Gate-to-source voltage (in volts)\n",
+ "gm = -2*IDSS/Vp*(1- VGS/Vp) #Transconductance (in Ampere per volt) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Transconductance : \",round(gm*10**3,2),\"mA/V.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.6 , Page Number 345"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 11,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "VGSoff : -2.0 mV.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "gm = 10.0 * 10**-3 #Transconductance (in siemens)\n",
+ "IDSS = 10.0 * 10**-6 #Drain-source saturation current (in Ampere)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGSoff = (-2*IDSS)/gm #Gate-to-source voltage (in volts)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"VGSoff : \",VGSoff*10**3,\"mV.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.7 , Page Number 345"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 14,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Minimum value of VDS : -4.0 V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "Vp = -4.0 #Pinch-off voltage (in volts)\n",
+ "VGS = -2.0 #Gate-source voltage (in volts)\n",
+ "IDSS = 10.0 * 10**-3 #Drain-source saturation current (in Ampere)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "ID = IDSS*(1 - VGS/Vp)**2 #Drain current (in Ampere)\n",
+ "VDSmin = Vp #Minimum drain-source voltage (in volts) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Minimum value of VDS : \",VDSmin,\"V.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.8 , Page Number 346"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 20,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "ID : 3.8667 mA.\n",
+ "gmo : 5.8 mS.\n",
+ "gm : 3.867 mS.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "IDSS = 8.7 * 10**-3 #Drain-source saturation current (in Ampere)\n",
+ "Vp = -3.0 #Pinch-off voltage (in volts)\n",
+ "VGS = -1.0 #Gate-source voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "ID = IDSS*(1 - VGS/Vp)**2 #Drain current (in Ampere)\n",
+ "gmo = -2*IDSS/Vp #Transconductance for VGS = 0 (in Ampere per volt) \n",
+ "gm = gmo*(1 - VGS/Vp) #Transconductance (in Ampere per volt)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"ID : \",round(ID*10**3,4),\"mA.\"\n",
+ "print \"gmo : \",round(gmo*10**3,1),\"mS.\"\n",
+ "print \"gm : \",round(gm*10**3,3),\"mS.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.9 , Page Number 346"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 21,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "ID : 2.1 mA.\n",
+ "gmo : 5.6 mS.\n",
+ "gm : 2.8 mS.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "IDSS = 8.4 * 10**-3 #Drain-source saturation current (in Ampere)\n",
+ "Vp = -3.0 #Pinch-off voltage (in volts)\n",
+ "VGS = -1.5 #Gate-source voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "ID = IDSS*(1 - VGS/Vp)**2 #Drain current (in Ampere)\n",
+ "gmo = -2*IDSS/Vp #Transconductance for VGS = 0 (in Ampere per volt) \n",
+ "gm = gmo*(1 - VGS/Vp) #Transconductance (in Ampere per volt)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"ID : \",round(ID*10**3,4),\"mA.\"\n",
+ "print \"gmo : \",round(gmo*10**3,1),\"mS.\"\n",
+ "print \"gm : \",round(gm*10**3,3),\"mS.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.10 , Page Number 346"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 24,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "VGS : -1.902 V.\n",
+ "gm : 2.31 mS.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "Vp = -4.5 #Pinch-off voltage (in volts)\n",
+ "IDSS = 9.0 * 10**-3 #Drain-source saturation current (in Ampere)\n",
+ "IDS = 3.0 * 10**-3 #Drain-source current (in Ampere) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGS = Vp*(1-(IDS/IDSS)**0.5) #Gate-to-source voltage (in volts)\n",
+ "gm = -2*IDSS/Vp*(1 - VGS/Vp) #Transconductance (in Ampere per volt) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"VGS : \",round(VGS,3),\"V.\"\n",
+ "print \"gm : \",round(gm*10**3,2),\"mS.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.11 , Page Number 349"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 26,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Drain-source voltage : 6.2 V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VGG = 1.5 #Gate supply voltage (in volts)\n",
+ "VDD = 15.0 #Drain supply voltage (in volts)\n",
+ "RD = 1.5 * 10**3 #Drain resistance (in ohm)\n",
+ "RG = 2.0 * 10**6 #Gate resistance (in ohm)\n",
+ "IDSS = 15.0 * 10**-3 #Drain current in saturation (in Ampere)\n",
+ "Vp = -4.0 #Pinch-off voltage (in volts)\n",
+ "VS = 0.0 #Source voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGS = -VGG #Gate-to-source voltage (in volts)\n",
+ "ID = IDSS*(1 - VGS/Vp)**2 #Drain current (in Ampere)\n",
+ "VD = VDD - ID*RD #Drain voltage (in volts)\n",
+ "VDS = VD - VS #Drain-to-source voltage (in volts)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Drain-source voltage : \",round(VDS,1),\"V.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.12 , Page Number 349"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 35,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "ID = 3.0 mA.\n",
+ "VDS = -7.5 V.\n",
+ "VD = -7.5 V.\n",
+ "VG = -3.0 V.\n",
+ "VS = 0 V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VGS = VGG = -3.0 #Gate-source voltage (in volts)\n",
+ "IDSS = 12.0 * 10**-3 #Drain current in saturation (in Ampere)\n",
+ "Vp = -6.0 #pinch-off voltage (in volts) \n",
+ "VDD = 3.0 #Drain voltage (in volts) \n",
+ "RD = 3.5 * 10**3 #Drain resistance (in ohm) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "ID = IDSS*(1 - VGS/Vp)**2 #Drain current (in Ampere)\n",
+ "VDS = VDD - ID*RD #Drain-source voltage (in volts)\n",
+ "VD = VDS #Drain voltage (in volts)\n",
+ "VG = VGG #Gate voltage (in volts)\n",
+ "VS = 0 #Source voltage (in volts) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"ID = \",ID*10**3,\"mA.\"\n",
+ "print \"VDS = \",VDS,\"V.\" \n",
+ "print \"VD = \",VD,\"V.\" \n",
+ "print \"VG = \",VG,\"V.\" \n",
+ "print \"VS = \",VS,\"V.\" \n",
+ "\n",
+ "#Calculation error in the value of VDS and VD in the book."
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.13 , Page Number 350"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 36,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Drain-source voltage : 18.2 V.\n",
+ "Gate-source voltage : -0.8 V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VDD = 25.0 #Drain Supply (in volts)\n",
+ "RD = 3.0 * 10**3 #Drain resistance (in ohm)\n",
+ "RS = 400.0 #Source resistance (in ohm)\n",
+ "ID = 2.0 * 10**-3 #Drain current (in Ampere) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VDS = VDD - ID*(RD + RS) #Drain-source voltage (in volts)\n",
+ "VGS = -ID*RS #Gate-source voltage (in volts)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Drain-source voltage : \",VDS,\"V.\"\n",
+ "print \"Gate-source voltage : \",VGS,\"V.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.14 , Page Number 350"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 46,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "RS : 2.5 kilo-ohm.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VDD = 25.0 #Drain voltage (in volts)\n",
+ "RG1 = 1.2 * 10**6 #Gate1 resistance (in ohm)\n",
+ "RG2 = 0.6 * 10**6 #Gate2 resistance (in ohm)\n",
+ "ID = 4.0 * 10**-3 #Drain current (in Ampere)\n",
+ "VDS = 8.0 #Drain-source voltage (in volts) \n",
+ "Vp = -4.0 #Pinch-off voltage (in volts) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGS = Vp*(1 - (ID/IDSS)**0.5) #Gate-source voltage (in volts)\n",
+ "VG = VDD*RG2/(RG1 + RG2) #Gate voltage (in volts)\n",
+ "RS = (VG - VGS)/ID #Source voltage (in ohm) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"RS : \",round(RS*10**-3,1),\"kilo-ohm.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.15 , Page Number 350"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 52,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Drain current at operating point : 4.46 mA.\n",
+ "Since , value of ID at operating point is almost equal to previously computed value of Id. Therefore , FET is operated in pinch-off region.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "Vp = -2.0 #pinch-off voltage (in volts)\n",
+ "IDSS = 5.0 * 10**-3 #Drain current in saturation (in Ampere)\n",
+ "RL = 910.0 #Load resistance (in ohm)\n",
+ "RF = 2.29 * 10**3 #Resistance (in ohm)\n",
+ "R1 = 12.0 * 10**6 #Resistance1 (in ohm)\n",
+ "R2 = 8.57 * 10**6 #Resistance2 (in ohm)\n",
+ "VDD = 24.0 #Drain supply voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VG = VDD*R2/(R1 + R2) #Gate voltage (in volts)\n",
+ "ID = 4.46 * 10**-3 #Drain current (in Ampere) \n",
+ "VGS = VG - ID*RF #Gate-source voltage (in volts)\n",
+ "ID1 = (VG - VGS)/RF #Drain current at operating point (in Ampere)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Drain current at operating point : \",round(ID1*10**3,3),\"mA.\"\n",
+ "print \"Since , value of ID at operating point is almost equal to previously computed value of Id. Therefore , FET is operated in pinch-off region.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.16 , Page Number 353"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 55,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Voltage gain : -30.0 .\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "gm = 2500.0 * 10**-6 #Transconductance (in siemens)\n",
+ "RL = 12.0 * 10**3 #Load resistance (in ohm)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "A = -gm*RL #Voltage gain \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Voltage gain : \",A,\".\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.17 , Page Number 353"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 57,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "VOltage gain : -59.9 .\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "gm = 4000.0 * 10**-6 #Transconductance (in siemens)\n",
+ "RL = 15.0 * 10**3 #Load resistance (in ohm)\n",
+ "RD = 10.0 * 10**6 #Drain resistance (in ohm)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "A = -gm*RD*RL/(RD + RL) #Voltage gain\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"VOltage gain : \",round(A,1),\".\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.18 , Page Number 353"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 62,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "RD : 5.0 kilo-ohm.\n",
+ "RS : 1.0 kilo-ohm.\n",
+ "Av : -20.0 .\n",
+ "Rin : 500.0 kilo-ohm.\n",
+ "Rout : 4.0 kilo-ohm.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "VGS = -1.0 #Gate-source voltage (in volts)\n",
+ "VDS = 4.0 #Drain-source voltage (in volts)\n",
+ "IDS = 1.0 * 10**-3 #Drain-source current (in Ampere)\n",
+ "gm = 5.0 * 10**-3 #Transconductance (in siemens)\n",
+ "RDS = 20.0 * 10**3 #Drain-source resistance (in ohm)\n",
+ "RG = 500.0 * 10**3 #Gate resistance (in ohm) \n",
+ "VDD = 10.0 #Drain supply voltage (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "RS = abs(VGS/IDS) #Source resistance (in ohm)\n",
+ "RD = (VDD - VDS)/IDS - RS #Drain resistance (in ohm) \n",
+ "Av = -gm*(RD*RDS/(RD + RDS)) #Voltage gain\n",
+ "Rin = RG #Input impedance (in ohm)\n",
+ "Rout = RD*RDS/(RD + RDS) #Output impedance (in ohm)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"RD : \",RD*10**-3,\"kilo-ohm.\"\n",
+ "print \"RS : \",RS*10**-3,\"kilo-ohm.\"\n",
+ "print \"Av : \",Av,\".\"\n",
+ "print \"Rin : \",Rin*10**-3,\"kilo-ohm.\"\n",
+ "print \"Rout : \",Rout*10**-3,\"kilo-ohm.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.19 , Page Number 355"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 64,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Input impedance : 1.33 Mega-ohm.\n",
+ "Output impedance : 345.0 ohm.\n",
+ "Voltage gain : 0.85 .\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "RL = 25.0 * 10**3 #Load resistance (in ohm)\n",
+ "RS = 2.5 * 10**3 #Source Resistance (in ohm)\n",
+ "R1 = 4.0 * 10**6 #Resistance1 (in ohm)\n",
+ "R2 = 2.0 * 10**6 #Resistance2 (in ohm)\n",
+ "gm = 2500.0 * 10**-6 #Transconductance (in siemens)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "Zin = R1*R2/(R1 + R2) #Input impedance (in ohm)\n",
+ "Zout = RS*1/gm/(RS + 1/gm) #Output impedance (in ohm)\n",
+ "Av = gm*RS*RL/(RS + RL)/(1 + gm*(RS*RL)/(RS + RL)) #Voltage gain\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Input impedance : \",round(Zin*10**-6,2),\"Mega-ohm.\"\n",
+ "print \"Output impedance : \",round(Zout),\"ohm.\"\n",
+ "print \"Voltage gain : \",round(Av,2),\".\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.20 , Page Number 369"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 69,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Drain current : 1.25 mA.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "IDon = 5.0 * 10**-3 #Drain current in on state (in Ampere)\n",
+ "VGS = 8.0 #Gate-source voltage (in volts)\n",
+ "VGST = 4.0 #Gate-source T voltage (in volts)\n",
+ "VGS1 = 6.0 #Gate-source voltage1 (in volts)\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "K = IDon/(VGS - VGST)**2 #K (in Ampere per volt-square) \n",
+ "ID = K*(VGS1 - VGST)**2 #Drain current (in Ampere) \n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Drain current : \",round(ID*10**3,2),\"mA.\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 10.21 , Page Number 369"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 83,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "VGS : 6.0 V.\n",
+ "ID : 0.001 A.\n",
+ "VDS : 9.0 V.\n",
+ "Av : 12.0 .\n",
+ "Vout : 0.96 V.\n"
+ ]
+ }
+ ],
+ "source": [
+ "#Variables\n",
+ "\n",
+ "IDon = 4.0 * 10**-3 #Drain current in on state (in Ampere)\n",
+ "VGS = 8.0 #Gate-source voltage (in volts)\n",
+ "VGST = 4.0 #Gate-source T voltage (in volts)\n",
+ "gm = 2000.0 * 10**-6 #Transconductance (in siemens)\n",
+ "VDD = 15.0 #Drain supply voltage (in volts)\n",
+ "RD = 6.0 * 10**3 #Drain resistance (in ohm)\n",
+ "RD2 = 40.0 * 10**3 #Resistance (in ohm)\n",
+ "RD1 = 60.0 * 10**3 #Resistance (in ohm) \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "VGS = VDD/(RD1 + RD2)*RD2 #Gate-source voltage (in volts)\n",
+ "K = IDon/4**2 #K (in Ampere per volt-square)\n",
+ "ID = K*(VGS - VGST)**2 #Drain current (in Ampere)\n",
+ "VDS = VDD - ID*RD #Drain-source voltage (in volts)\n",
+ "Av = gm*RD #Voltage gain\n",
+ "Vout = Av*0.08 #Output voltage (in volts)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"VGS : \",VGS,\"V.\"\n",
+ "print \"ID : \",ID,\"A.\"\n",
+ "print \"VDS : \",abs(VDS),\"V.\"\n",
+ "print \"Av : \",Av,\".\"\n",
+ "print \"Vout : \",Vout,\"V.\""
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 2",
+ "language": "python",
+ "name": "python2"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.10"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
|