#!/bin/bash

echo "Cálculo dos valores dos resistores e capacitores do trabalho final de Eletrônica 1"

read -p "Digite o valor da frequência: " frequencia
if [ -z "${frequencia}" ]; then
    echo "É necessário o valor da freqência!!"
    read -p "Digite o valor da frequência: " frequencia
else

read -p "Digite o valor de Rl: " Rl
read -p "Digite o valor de Vcc: " Vcc
read -p "Digite o valor de icq: " icq
read -p "Digite o valor de ei: " ei
read -p "Digite o valor de Rs: " Rs
read -p "Digite o valor do ganho: " ganho
read -p "Digite o valor do Bcc: " Bcc
fi

echo "================================================="
echo "Frequência de $frequencia Hz"
echo "Resistência de carga Rl de $Rl ohms"
echo "Tensão contínua Vcc de $Vcc V"
echo "Corrente de $icq A no coletor do transistor"
echo "Corrente ei de $ei A"
echo "Resistor Rs de $Rs ohms"
echo "Ganho de $ganho"
echo "Bcc de $Bcc"
echo ""
echo "================================================="
echo ""
Vceq=$(bash -c "awk 'BEGIN {print $Vcc * 0.5}'")
echo "Vce = 50% de Vcc = $Vceq V"
echo "Vce = $Vceq V"
echo ""
echo "================================================="
Vrc=$(bash -c "awk 'BEGIN {print $Vcc * 0.4}'")
echo "Vrc = 40% de Vcc = $Vrc V"
echo "Vrc = $Vrc V"
echo ""
echo "================================================="
Vre=$(bash -c "awk 'BEGIN {print $Vcc * 0.1}'")
echo "Vre = 10% de Vcc = $Vre V"
echo "Vre = $Vre V"
echo ""
echo "================================================="
Rc=$(bash -c "awk 'BEGIN {print $Vrc / $icq}'")
echo "Rc = Vrc/Ic = $Vrc/$icq = $Rc ohms"
echo "Rc = $Rc ohms"
echo ""
echo "================================================="
ie=$icq
RE=$(bash -c "awk 'BEGIN {print $Vre / $ie}'")
echo "RE = Vre/ie = $Vre/$ie = $RE ohms"
echo "RE = $RE ohms"
echo ""
echo "================================================="
Vbe=0.7
Vth=$(bash -c "awk 'BEGIN {print $Vbe + $Vre}'")
echo "Vth = Vbe + Vre = $Vbe + $Vre = $Vth V"
echo "Vth = $Vth V"
echo ""
echo "================================================="
R2=$(bash -c "awk 'BEGIN {print 0.01 * ($Bcc + 1) * $RE}'")
echo "R2 <= 0.01(B + 1)Re = 0.01($Bcc + 1)$RE = $R2"
echo "R2 = $R2 ohms"
echo ""
echo "================================================="
R1=$(bash -c "awk 'BEGIN {print ($R2 * ($Vcc - $Vth)) / $Vth}'")
echo "R1 = R2 * (Vcc - Vth)/Vth = $R2 * ($Vcc - $Vth)/$Vth = $R1 ohms"
echo "R1 = $R1 ohms"
echo ""
echo "================================================="
echo ""
echo "                  Análise CA"
echo ""
echo "================================================="
echo ""
echo "Cálculo do re':"
re_linha=$(bash -c "awk 'BEGIN {print 0.025 / $ie}'")
echo "re' = 25mV / $ie = $re_linha"
echo "re' = $re_linha ohms"
echo ""
echo "=================================================="
rc=$(bash -c "awk 'BEGIN {print ($Rc * $Rl) / ($Rc + $Rl)}'")
echo "rc = Rc//Rl = ($Rc * $Rl) / ($Rc + $Rl) = $rc"
echo "rc = $rc ohms"
echo ""
echo "=================================================="
Zent=$(bash -c "awk 'BEGIN {print 1 / ((1 / $R1) + (1 / $R2) )}'")
echo "Zent = 1 / ((1 / R1) + (1 / R2))"
echo "Zent = 1 / ((1 / $R1) + (1 / $R2)) = $Zent ohms"
echo "Zent = $Zent ohms"
echo ""
echo "=================================================="
re=$(bash -c "awk 'BEGIN {print ((($Zent / ($Zent + $Rs)) * ($Rl / ($Rc + $Rl)) * $Rc) / $ganho) - $re_linha}'")
echo "re = (((Zent / (Zent + Rs)) * (Rl / (Rc + Rl)) * Rc) / ganho) - re' = ((($Zent / ($Zent + $Rs)) * ($Rl / ($Rc + $Rl)) * $Rc) / $ganho) - $re_linha = $re"
echo "re = $re ohms"
echo ""
echo "=================================================="
Re=$(bash -c "awk 'BEGIN {print $RE - $re}'")
echo "Re = RE - re = $RE - $re = $Re"
echo "Re = $Re ohms"
echo ""
echo "=================================================="
echo "Vce máx = Vcc para Ic = 0"
echo "Ic máx = (Vcc / Rc + Re) para Vce = 0"
Vce=0
Icmax=$(bash -c "awk 'BEGIN {print $Vcc / ($Rc + $Re)}'")
echo "Ic máx = $Vcc / $Rc + $Re = $Icmax A"
echo "Ic máx = $Icmax A"
echo ""
echo ""
echo "=================================================="
echo ""
echo "                Reta de caga CA"
echo ""
echo "=================================================="
Icmax=$(bash -c "awk 'BEGIN {print (($Vceq - $Vce) / $rc) + $icq}'")
echo "Icmax = ((Vceq - Vce) / rc) + icq"
echo "Icmax = (($Vceq - $Vce) / $rc) + $icq = $Icmax A"
echo "Icmax = $Icmax A"
echo ""
echo "=================================================="
Vcecorte=$(bash -c "awk 'BEGIN {print $Vceq + ($icq * $rc)}'")
echo "Vcecorte = Vceq + (icq * rc) = $Vceq + ($icq * $rc) = $Vcecorte V"
echo "Vcecorte = $Vcecorte V"
echo ""
echo "=================================================="
Icqrc=$(bash -c "awk 'BEGIN {print $icq * $rc}'")
echo "Compilance → menor valor entre $Vceq e $Icqrc"
echo ""
echo "=================================================="
echo "Novo Vent"
Vent=$(bash -c "awk 'BEGIN {print $ei * ($Zent / ($Zent + $Rs))}'")
echo "Vent = ei * (Zent / (Zent + Rs)) = $ei * ($Zent / $Zent + $Rs) = $Vent V"
echo "Vent = $Vent V"
echo ""
echo "=================================================="
echo ""
echo "          Cálculo dos capacitores"
echo ""
echo "=================================================="
pi=$(echo "scale=20; 4*a(1)" | bc -l)
echo ""
Xc1=$(bash -c "awk 'BEGIN {print ($Rs + $Zent) / 10}'")
C1=$(bash -c "awk 'BEGIN {print 1 / (2 * $pi * $frequencia * $Xc1)}'")
echo "Xc1 = (Rs + Zent) / 10 = ($Rs + $Zent) / 10 = $Xc1 F"
echo "Xc1 = $Xc1 ohms"
echo ""
echo "C1 = 1 / 2πfXc1 = 1 / 2 * $pi * $frequencia * $Xc1 = $C1 F"
echo "C1 = $C1 F"
echo ""
echo "=================================================="
Xc2=$(bash -c "awk 'BEGIN {print ($Rc + $Rl) / 10}'")
C2=$(bash -c "awk 'BEGIN {print 1 / (2 * $pi * $frequencia * $Xc2)}'")
echo "Xc2 = (Rc + Rl) /10 = ($Rc + $Rl) / 10 = $Xc2 ohms"
echo "Xc2 = $Xc2 ohms"
echo ""
echo "C2 = 1 / 2πfXc2 = 1 / 2 * $pi * $frequencia * $Xc2 = $C2 F"
echo "C2 = $C2 F"
echo ""
echo "=================================================="
Xc3=$(bash -c "awk 'BEGIN {print ((($re_linha + $re) * $Re) / (($re_linha + $re) + $Re)) / 10}'")
C3=$(bash -c "awk 'BEGIN {print 1 / (2 * $pi * $frequencia * $Xc3)}'")
echo "Xc3 = (((re' + re) * Re / ((re' + re) + Re)) / 10"
echo "Xc3 = ((($re_linha + $re) * $Re) / (($re_linha + $re) + $Re)) / 10 = $Xc3 F"
echo "Xc3 = $Xc3 ohms"
echo ""
echo "C3 = 1 / 2πfXc3 = 1 / 2 * $pi * $frequencia * $Xc3 = $C3 F"
echo "C3 = $C3 F"
echo ""