Version 4
SHEET 1 880 680
WIRE 160 80 80 80
WIRE 224 80 160 80
WIRE 80 128 80 80
WIRE 224 144 224 80
WIRE 80 240 80 208
WIRE 224 240 224 208
WIRE 224 240 80 240
WIRE 80 256 80 240
WIRE 160 272 80 272
WIRE 224 272 160 272
WIRE 80 320 80 272
WIRE 224 336 224 272
WIRE 80 432 80 400
WIRE 224 432 224 400
WIRE 224 432 80 432
WIRE 80 448 80 432
FLAG 80 256 0
FLAG 160 80 c1
FLAG 80 448 0
FLAG 160 272 c2
SYMBOL cap 208 144 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL voltage 80 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 1 1)
SYMBOL cap 208 336 R0
SYMATTR InstName C2
SYMATTR Value q=(1u+1u*time)*x
SYMBOL voltage 80 304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 1 1)
TEXT 80 32 Left 2 !.tran 100m
TEXT 80 48 Left 2 !.func cx(a, b) {a+b*time}
TEXT 232 416 Left 2 ;q=cx(1u,1u)*x