Version 4
SHEET 1 4212 1120
WIRE 2352 256 1840 256
WIRE 2352 272 2352 256
WIRE 2640 288 2400 288
WIRE 2752 288 2720 288
WIRE 2416 336 2400 336
WIRE 1840 384 1840 256
WIRE 1840 384 1728 384
WIRE 1872 384 1840 384
WIRE 2176 384 2096 384
WIRE 2352 384 2352 352
WIRE 2352 384 2176 384
WIRE 2448 384 2352 384
WIRE 1728 400 1728 384
WIRE 2176 400 2176 384
WIRE 2352 416 2352 384
WIRE 2640 432 2400 432
WIRE 2752 432 2720 432
WIRE 1984 480 1984 448
WIRE 2176 480 2176 464
WIRE 2416 480 2400 480
WIRE 1728 496 1728 480
WIRE 2352 512 2352 496
FLAG 1984 480 0
FLAG 2448 384 OUT
FLAG 1728 384 IN
FLAG 1728 496 0
FLAG 2176 480 0
FLAG 2352 512 0
FLAG 2416 480 0
FLAG 2752 432 0
FLAG 2416 336 0
FLAG 2752 288 0
SYMBOL voltage 1728 384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 4
SYMBOL cap 2160 400 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL sw 2352 512 R180
WINDOW 0 -7 106 Right 2
WINDOW 3 -7 12 Right 2
SYMATTR InstName S1
SYMATTR Value 5mA
SYMBOL voltage 2624 432 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 2352 368 R180
WINDOW 0 -9 102 Right 2
WINDOW 3 -9 14 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 LT6654-3.3 1984 384 R0
SYMATTR InstName U1
TEXT 2080 576 Left 2 !.tran 1m\n.model 5mA SW(Ron=10 Roff=1Meg Vt=.5 Vh=-.1 Ilimit=5m level=2)
TEXT 2000 248 Bottom 2 ;Turn on and off 5mA of sink current\nand then on and off 5mA of source current