Version 4
SHEET 1 880 680
WIRE 160 -16 64 -16
WIRE 496 -16 320 -16
WIRE 64 0 64 -16
WIRE 496 0 496 -16
WIRE 160 64 160 -16
WIRE 320 64 320 -16
WIRE 64 96 64 80
WIRE 496 96 496 80
WIRE 112 128 -256 128
WIRE 384 128 368 128
WIRE 480 128 464 128
WIRE 528 128 480 128
WIRE -256 144 -256 128
WIRE 528 144 528 128
WIRE 112 192 96 192
WIRE 480 192 480 128
WIRE 480 192 368 192
WIRE 528 224 528 208
WIRE -256 240 -256 224
WIRE 160 272 160 256
WIRE 320 272 320 256
FLAG 160 272 0
FLAG 320 272 0
FLAG 528 224 0
FLAG 528 128 OUT
FLAG 496 96 0
FLAG 64 96 0
FLAG -256 240 0
FLAG 96 192 0
SYMBOL voltage 64 -16 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 496 -16 R0
WINDOW 123 24 132 Left 2
WINDOW 39 24 114 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL res 480 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 5
SYMBOL cap 512 144 R0
SYMATTR InstName C1
SYMATTR Value 2n
SYMBOL voltage -256 128 R0
WINDOW 123 24 132 Left 2
WINDOW 39 24 114 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 0 2n 2n 998n 2u)
SYMBOL PowerProducts\\ADUm4121C 240 160 R0
SYMATTR InstName U1
TEXT 400 272 Left 2 !.tran 100u startup