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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 9 - Multistage Amplifier"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 424 example 1"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "frequency1 = 50982.45 hertz\n",
+ "frequency2 = 196145.92 hertz\n",
+ "frequency = 269258240.36 hertz\n",
+ "frequency = 76822.13 hertz\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import sqrt\n",
+ "from __future__ import division\n",
+ "#(1) frequency\n",
+ "freque=100*10**3*sqrt(2**(1/3)-(1))\n",
+ "frequ2=100*10**3/sqrt(2**(1/3)-(1))\n",
+ "print \"frequency1 = %0.2f\"%((freque)),\"hertz\"\n",
+ "print \"frequency2 = %0.2f\"%((frequ2)),\"hertz\"\n",
+ "#(2)frequency\n",
+ "freq11=100*10**6##hertz\n",
+ "freq12=150*10**6##hertz\n",
+ "freq13=200*10**6##hertz\n",
+ "freq21=100*10**3##hertz\n",
+ "freq22=150*10**3##hertz\n",
+ "freq23=200*10**3##hertz\n",
+ "frequ1=sqrt(freq11**2+freq12**2+freq13**2)\n",
+ "print \"frequency = %0.2f\"%((frequ1)),\"hertz\"##correction in the book 269.25mega hertz\n",
+ "frequ1=1/sqrt((1/(freq21**2))+(1/(freq22**2))+(1/(freq23**2)))\n",
+ "print \"frequency = %0.2f\"%((frequ1)),\"hertz\"##correction in the book"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 424 example 2"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "coupling capacitance = 5.48e-06 /r`\n"
+ ]
+ }
+ ],
+ "source": [
+ "freque=60##hertz\n",
+ "frequ1=freque*0.484\n",
+ "cb=1/(frequ1*2*3.14*10**3)\n",
+ "print \"coupling capacitance = %0.2e\"%((cb)),\"/r`\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 425 example 3"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "cb = 6.28e-08 farad\n",
+ "cb = 8.92e-08 farad\n",
+ "gain of each stage = 1.06e-03\n"
+ ]
+ }
+ ],
+ "source": [
+ "g=10*10**-3##ampere per volt\n",
+ "rd=5.5*10**3##ohm\n",
+ "rg=1*10**6##ohm\n",
+ "#(1) cb frequency 1decibel to 10hertz\n",
+ "ri=rg\n",
+ "r1=(rd*8*10**3)/(rd+8*10**3)\n",
+ "cb=10**-6/(3.14*5.07)\n",
+ "print \"cb = %0.2e\"%((cb)),\"farad\"\n",
+ "#(2) cb\n",
+ "cb=(cb*(5)/(3.52))\n",
+ "print \"cb = %0.2e\"%((cb)),\"farad\"\n",
+ "#(3) gain\n",
+ "a1=g**2*(3.26**2)\n",
+ "print \"gain of each stage = %0.2e\"%((a1))\n",
+ "#correction required in the book"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 427 example 4"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "upper frequency = 78895.46 hertz\n",
+ "lower frequency = 20408.16 hertz\n"
+ ]
+ }
+ ],
+ "source": [
+ "freque=40*10**3##hertz\n",
+ "frequ1=freque/0.507\n",
+ "print \"upper frequency = %0.2f\"%((frequ1)),\"hertz\"\n",
+ "frequ1=freque/1.96\n",
+ "print \"lower frequency = %0.2f\"%((frequ1)),\"hertz\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 427 example 5"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "overal voltage gain = 62.01 decibel\n",
+ "lower frequency of each = 31.70 hertz\n",
+ "lower frequency overal = 62.13 hertz\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import log10\n",
+ "g=2.6*10**-3##ampere per volt\n",
+ "rd=7.7*10**3##ohm\n",
+ "rd1=12*10**3##ohm\n",
+ "cb=0.005*10**-6##farad\n",
+ "#(1) voltage gain\n",
+ "volgai=g*((1/rd)+1/rd1+1/(1*10**3))\n",
+ "volgai=(20*(log10(10.8)))*3\n",
+ "print \"overal voltage gain = %0.2f\"%((volgai)),\"decibel\"##correction in the book\n",
+ "#(2) lower frequency\n",
+ "r=rd*rd1/(rd+rd1)\n",
+ "freque=1/((2*3.14)*(r+1*10**6)*cb)\n",
+ "print \"lower frequency of each = %0.2f\"%((freque)),\"hertz\"\n",
+ "#(3) overal lower frequency\n",
+ "freque=freque*1.96\n",
+ "print \"lower frequency overal = %0.2f\"%((freque)),\"hertz\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 429 example 6"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "voltage gain = 2851.60\n",
+ "cb = 2.61e-06 farad\n",
+ "cb <= 1.64e-05 farad\n"
+ ]
+ }
+ ],
+ "source": [
+ "hfe=50\n",
+ "hie=1.1*10**3##ohm\n",
+ "#(1) gain\n",
+ "r1=2*10**3##ohm\n",
+ "volgai=-hfe*r1/(hie)\n",
+ "r11=25*10**3*hie/(25*10**3+hie)\n",
+ "r11=r1*r11/(r1+r11)\n",
+ "volga1=-hfe*r11/hie\n",
+ "volgai=volgai*volga1\n",
+ "print \"voltage gain = %0.2f\"%((volgai))\n",
+ "freque=20##hertz\n",
+ "ri=25*10**3*hie/(25*10**3+hie)\n",
+ "cb=1/(2*3.14*(ri+r1)*(freque))\n",
+ "print \"cb = %0.2e\"%((cb)),\"farad\"\n",
+ "cb=1/(2*3.14*3.05*10**3*10/3.14)\n",
+ "print \"cb <= %0.2e\"%((cb)),\"farad\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 432 example 8"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "theta1 = 5.71\n",
+ "phase constant 10f1<=f<=0.1f11\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import atan, degrees\n",
+ "theta1=degrees(atan(0.1))\n",
+ "print \"theta1 = %0.2f\"%((theta1))\n",
+ "print \"phase constant 10f1<=f<=0.1f11\""
+ ]
+ }
+ ],
+ "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": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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