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{SECT 0 {EXCHG {PARA 0 "" 0 "" {TEXT -1 83 "  Maple can deal with simp
le ideal diode models numerically. These are tested below" }}{PARA 0 "
" 0 "" {TEXT -1 78 "  on a 1/2 wave rectifier with 10 Ohm load and dri
ving voltage 1.0*sin(10.0*t)" }}{PARA 0 "" 0 "" {TEXT -1 0 "" }}{PARA 
0 "" 0 "" {TEXT -1 93 "  Model 1: Ideal Diode:  Zero volt drop in forw
ard direction, 1.0e20 Ohm in reverse direction" }}{PARA 0 "" 0 "" 
{TEXT -1 45 "                Vdiode=Heaviside(-i)*i*1.0e20" }}{PARA 0 
"" 0 "" {TEXT -1 41 "                Heaviside(s) is 1 for s>0" }}
{PARA 0 "" 0 "" {TEXT -1 48 "                                       0 \+
for s<0" }}{PARA 0 "" 0 "" {TEXT -1 81 "  Model 2: Ideal Diode: Exager
ate Eber-Moler's Equation so gamma is very small.  " }}{PARA 0 "" 0 "
" {TEXT -1 45 "               i=1.0e-9*(exp(1.0e6*Vdiode)-1)" }}{PARA 
0 "" 0 "" {TEXT -1 52 "              -> Vdiode=ln((i+1.0e-9)/1.0e-9)/1
.0e6;" }}{PARA 0 "" 0 "" {TEXT -1 52 "   Model 3: Non ideal diode: (Eb
er-Moler's Equation)" }}{PARA 0 "" 0 "" {TEXT -1 43 "                i
=1.0e-9*(exp(39*Vdiode)-1)" }}{PARA 0 "" 0 "" {TEXT -1 51 "           \+
     -> Vdiode=ln(i+1.0e-9)/1.0e-9)/39.;" }}{PARA 0 "" 0 "" {TEXT -1 
87 "                  This is to first order how Spice Circuit Emulati
on deals with diodes." }}{PARA 0 "" 0 "" {TEXT -1 10 "          " }}
{PARA 0 "" 0 "" {TEXT -1 0 "" }}}{EXCHG {PARA 0 "" 0 "" {TEXT -1 31 " \+
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1 "" {XPPMATH 20 "6#>%$eq1G,(-%$sinG6#,$%\"tG$\"#5\"\"!!\"\"*($F,\"#>
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{XPPMATH 20 "6#>%\"iG-%'RootOfG6#,(*&-%*HeavisideG6#,$%#_ZG!\"\"\"\"\"
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{PARA 0 "> " 0 "" {MPLTEXT 1 0 27 "plot(evalf(i),t=-1.0..1.0);" }}
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