Version 4
SHEET 1 1428 680
WIRE 80 80 -96 80
WIRE 192 80 80 80
WIRE 320 80 272 80
WIRE 512 80 320 80
WIRE 752 96 576 96
WIRE 880 96 848 96
WIRE 944 96 880 96
WIRE 1088 96 944 96
WIRE 512 112 496 112
WIRE 1344 112 1152 112
WIRE 1392 112 1344 112
WIRE 1088 128 1056 128
WIRE 80 192 80 144
WIRE 1056 224 1056 128
WIRE 496 240 496 112
WIRE 80 304 80 256
WIRE 144 304 80 304
WIRE 768 320 768 144
WIRE 768 320 208 320
WIRE 144 336 112 336
WIRE 80 400 80 384
WIRE 112 400 112 336
WIRE 112 400 80 400
WIRE 80 432 80 400
FLAG -320 224 0
FLAG -320 144 VCC
FLAG -96 160 0
FLAG 320 144 0
FLAG 576 240 0
FLAG 176 352 VCC
FLAG 544 128 VCC
FLAG 176 288 0
FLAG 544 64 0
FLAG 944 176 0
FLAG 880 160 0
FLAG 1136 224 0
FLAG 416 240 VCC
FLAG 976 224 VCC
FLAG 1120 144 VCC
FLAG 1120 80 0
FLAG 1344 192 0
FLAG 80 432 0
SYMBOL cap 64 80 R0
SYMATTR InstName C1
SYMATTR Value 470p
SYMBOL diode 96 256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL res 288 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 680k
SYMBOL cap 304 80 R0
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL res 512 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL res 592 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 30k
SYMBOL voltage -96 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 99m 0 100m 5 4.999 5 5 0 14.999 0 15 5 24.999 5 25 0)
SYMBOL voltage -320 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL pmos 848 144 M270
SYMATTR InstName M1
SYMATTR Value AO6407
SYMBOL cap 864 96 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL res 928 80 R0
SYMATTR InstName R5
SYMATTR Value 680k
SYMBOL res 1072 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 20k
SYMBOL res 1152 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 30k
SYMBOL res 1328 96 R0
SYMATTR InstName R8
SYMATTR Value 680k
SYMBOL res 64 288 R0
SYMATTR InstName R9
SYMATTR Value 100k
SYMBOL Comparators\\LT1018 544 96 M180
SYMATTR InstName U1
SYMBOL Comparators\\LT1018 1120 112 M180
SYMATTR InstName U2
SYMBOL Comparators\\LT1716 176 320 M180
SYMATTR InstName U3
TEXT -370 338 Left 2 !.tran 35