Version 4
SHEET 1 4212 1120
WIRE 2288 256 1840 256
WIRE 2288 272 2288 256
WIRE 2640 288 2336 288
WIRE 2752 288 2720 288
WIRE 2352 336 2336 336
WIRE 1840 384 1840 256
WIRE 1840 384 1744 384
WIRE 1872 384 1840 384
WIRE 2176 384 2096 384
WIRE 2288 384 2288 352
WIRE 2288 384 2176 384
WIRE 2352 384 2288 384
WIRE 1744 400 1744 384
WIRE 2176 400 2176 384
WIRE 2288 400 2288 384
WIRE 2640 416 2336 416
WIRE 2752 416 2720 416
WIRE 2352 464 2336 464
WIRE 1984 480 1984 448
WIRE 2176 480 2176 464
WIRE 1744 496 1744 480
WIRE 2288 496 2288 480
FLAG 1984 480 0
FLAG 2352 384 OUT
FLAG 1744 384 IN
FLAG 1744 496 0
FLAG 2176 480 0
FLAG 2288 496 0
FLAG 2352 464 0
FLAG 2752 416 0
FLAG 2352 336 0
FLAG 2752 288 0
SYMBOL voltage 1744 384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL cap 2160 400 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL sw 2288 496 R180
WINDOW 0 -19 97 Right 2
WINDOW 3 -12 12 Right 2
SYMATTR InstName S1
SYMATTR Value 5mA
SYMBOL voltage 2624 416 M90
WINDOW 123 74 56 VTop 2
WINDOW 39 53 56 VTop 2
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 1 600u 10n 10n 200u 10m)
SYMBOL sw 2288 368 R180
WINDOW 0 -9 107 Right 2
WINDOW 3 -9 6 Right 2
SYMATTR InstName S2
SYMATTR Value 5mA
SYMBOL voltage 2624 288 M90
WINDOW 123 74 56 VTop 2
WINDOW 39 53 56 VTop 2
WINDOW 3 32 56 VTop 2
WINDOW 0 -32 56 VBottom 2
SYMATTR Value PULSE(0 1 100u 10n 10n 200u 10m)
SYMATTR InstName V3
SYMBOL LT6654-4.096 1984 384 R0
SYMATTR InstName U1
TEXT 2112 552 Left 2 !.tran 1m\n.model 5mA SW(Ron=10 Roff=1Meg Vt=.5 Vh=-.1 Ilimit=5m level=2)\\
TEXT 2024 248 Bottom 2 ;Turn on and off 5mA of sink current\nand then on and off 5mA of source current