Version 4
SHEET 1 1076 680
WIRE 224 80 -48 80
WIRE 496 80 224 80
WIRE -48 128 -48 80
WIRE 224 144 224 80
WIRE 496 144 496 80
WIRE -48 256 -48 208
WIRE 224 256 224 208
WIRE 496 256 496 208
FLAG -48 256 0
FLAG 224 256 0
FLAG 224 80 U
FLAG 496 256 0
SYMBOL cap 208 144 R0
SYMATTR InstName Cdcharge1
SYMATTR Value Q=20n*5*x**0.2
SYMBOL voltage -48 112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PWL(0 10 400u 410)
SYMBOL diode 480 208 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value DD
TEXT -56 -80 Left 2 !.tran 0 400u 0.1u 0.1u
TEXT -56 -48 Left 2 !.options plotwinsize=0
TEXT -56 -8 Left 2 ;.model DD D(Cjo=23n M=0.77 Vj=0.8)
TEXT -56 24 Left 2 ;.model DD D(Cjo=16n M=0.8 Vj=1.5)
TEXT -56 -128 Left 2 !.model DD D(Cjo=20n M=0.78 Vj=1)