Version 4
SHEET 1 1060 680
WIRE 1024 -16 64 -16
WIRE 64 48 64 -16
WIRE 112 48 64 48
WIRE 224 48 192 48
WIRE 384 48 224 48
WIRE 224 64 224 48
WIRE 816 64 672 64
WIRE 1024 64 1024 -16
WIRE 1024 64 880 64
WIRE 608 80 528 80
WIRE 816 96 752 96
WIRE 224 144 224 128
WIRE 752 144 752 96
WIRE 64 240 64 192
WIRE 224 240 224 224
WIRE 224 240 64 240
WIRE 224 256 224 240
FLAG 224 256 0
FLAG 752 224 0
SYMBOL cap 208 64 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res 208 128 R0
SYMATTR InstName R1
SYMATTR Value 438
SYMBOL RES 208 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 46k
SYMBOL voltage 64 96 R0
WINDOW 3 -27 200 Left 2
WINDOW 123 -22 222 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 0 100n 100n 11u 4.86u)
SYMATTR Value2 AC 1 0
SYMBOL SPECIALFUNCTIONS\\MODULATE 384 48 R0
WINDOW 0 55 -48 Right 2
WINDOW 3 110 116 Right 2
SYMATTR InstName A1
SYMATTR Value mark=18.6k space=0
SYMBOL Digital\\schmitt 608 16 R0
WINDOW 3 8 32 Invisible 2
SYMATTR InstName A2
SYMATTR Value Vhigh=5 Vt=0 Vh=0.01 Td=0.01n
SYMBOL DIGITAL\\XOR 864 16 R0
WINDOW 0 -33 16 Left 2
WINDOW 3 -99 -15 Invisible 2
SYMATTR InstName A3
SYMATTR Value Ref=0.01
SYMATTR Value2 Vhigh=5
SYMBOL voltage 752 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 100n 100n 7.93u 15.87u)
TEXT 30 272 Left 2 !.tran 1000m