Version 4
SHEET 1 2080 680
WIRE -64 96 -224 96
WIRE 144 96 -64 96
WIRE 432 96 144 96
WIRE 704 96 432 96
WIRE 1392 96 704 96
WIRE -224 128 -224 96
WIRE -64 128 -64 96
WIRE 144 128 144 96
WIRE 704 128 704 96
WIRE 1392 128 1392 96
WIRE -224 240 -224 208
WIRE -64 240 -64 208
WIRE 144 240 144 208
WIRE 704 240 704 208
WIRE 1392 240 1392 208
FLAG 144 240 0
FLAG -224 240 0
FLAG 704 240 0
FLAG 432 96 1
FLAG 1392 240 0
FLAG -64 240 0
SYMBOL current 144 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value TBL(-1k -1 0 0 1 1m 1k 100m)
SYMBOL voltage -224 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 0
SYMBOL bi 704 128 R0
SYMATTR InstName B1
SYMATTR Value I=table(V(1),-1k, -1, 0, 0, 1, 1m, 1k, 100m)
SYMBOL res 1376 112 R0
SYMATTR InstName R1
SYMATTR Value R=table(V(1),-1k,1k,0,1k,1,1k,5,2k,10,3k,20,5k)
SYMBOL res -80 112 R0
SYMATTR InstName R2
SYMATTR Value {RX}
TEXT -176 -160 Left 2 !.dc V1 -10 20 10m
TEXT -176 -32 Left 2 ;.step param X 1 3 1
TEXT -176 -96 Left 2 !.param X=1\n.param RX=table(X, 1,1k, 2, 2k, 3, 5k)
RECTANGLE Normal 320 0 -208 -112 2