Version 4
SHEET 1 880 680
WIRE -304 160 -304 144
WIRE -304 304 -304 160
WIRE -304 416 -304 384
WIRE -304 448 -304 416
WIRE -208 304 -208 208
WIRE -208 416 -304 416
WIRE -208 416 -208 384
WIRE -176 208 -208 208
WIRE -128 224 -128 176
WIRE -128 416 -208 416
WIRE -128 416 -128 304
WIRE -80 176 -128 176
WIRE -80 304 -80 240
WIRE -80 416 -128 416
WIRE -80 416 -80 384
WIRE -64 240 -80 240
WIRE -32 144 -304 144
WIRE -32 176 -80 176
WIRE -32 208 -176 208
WIRE -32 240 -64 240
WIRE 32 288 32 256
WIRE 32 304 32 288
WIRE 32 416 -80 416
WIRE 32 416 32 384
WIRE 112 224 96 224
WIRE 128 160 96 160
FLAG -304 448 0
FLAG 128 160 Out
IOPIN 128 160 Out
FLAG -304 160 In
FLAG -176 208 Ks
FLAG -80 176 Xdot
FLAG -64 240 A
FLAG 32 288 F0
FLAG 112 224 OutDig
IOPIN 112 224 Out
SYMBOL voltage -304 288 R0
WINDOW 0 -17 61 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 473 144 Right 0
SYMATTR InstName Vc
SYMATTR Value PULSE(0 {1-(F0/KS)} 1m .4m .4m .2m 1m)
SYMBOL voltage -208 288 R0
WINDOW 0 -50 13 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -24 54 Left 0
SYMATTR InstName Vks
SYMATTR Value {Ks}
SYMBOL voltage 32 288 R0
WINDOW 0 12 12 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -24 59 Left 0
SYMATTR InstName Vf0
SYMATTR Value {F0}
SYMBOL voltage -80 288 R0
WINDOW 0 11 11 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -15 60 Left 0
SYMATTR InstName Va
SYMATTR Value {a}
SYMBOL voltage -128 208 R0
WINDOW 0 -29 58 Left 0
WINDOW 3 14 57 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 -21 91 VRight 0
SYMATTR InstName Vx
SYMATTR Value 0
SYMATTR SpiceLine Rser=100
SYMBOL Robertugo\\vcodig 32 192 R0
SYMATTR SpiceModel vcodig
SYMATTR InstName U1
TEXT -304 392 Left 0 !.tran 2m
TEXT -328 128 Left 0 !.params Ks=100 F0=2 a=1