Version 4
SHEET 1 1076 1948
WIRE 64 64 48 64
WIRE 256 64 208 64
WIRE 208 80 208 64
WIRE 48 96 48 64
WIRE 208 176 208 160
WIRE 48 192 48 176
WIRE 48 272 -32 272
WIRE 256 272 240 272
WIRE 736 272 656 272
WIRE 944 272 928 272
WIRE 256 336 240 336
WIRE 352 336 336 336
WIRE 944 336 928 336
WIRE 1040 336 1024 336
WIRE -32 368 -32 352
WIRE 48 368 -32 368
WIRE 656 368 656 352
WIRE 736 368 656 368
WIRE -32 384 -32 368
WIRE 656 384 656 368
WIRE 48 464 -32 464
WIRE 256 464 240 464
WIRE 736 464 656 464
WIRE 944 464 928 464
WIRE 256 528 240 528
WIRE 352 528 336 528
WIRE 944 528 928 528
WIRE 1040 528 1024 528
WIRE -32 560 -32 544
WIRE 48 560 -32 560
WIRE 656 560 656 544
WIRE 736 560 656 560
WIRE -32 576 -32 560
WIRE 656 576 656 560
WIRE 48 656 -32 656
WIRE 256 656 240 656
WIRE 736 656 656 656
WIRE 944 656 928 656
WIRE 256 720 240 720
WIRE 352 720 336 720
WIRE 944 720 928 720
WIRE 1040 720 1024 720
WIRE -32 752 -32 736
WIRE 48 752 -32 752
WIRE 656 752 656 736
WIRE 736 752 656 752
WIRE -32 768 -32 752
WIRE 656 768 656 752
WIRE 48 848 -32 848
WIRE 256 848 240 848
WIRE 736 848 656 848
WIRE 944 848 928 848
WIRE 256 912 240 912
WIRE 352 912 336 912
WIRE 944 912 928 912
WIRE 1040 912 1024 912
WIRE -32 944 -32 928
WIRE 48 944 -32 944
WIRE 656 944 656 928
WIRE 736 944 656 944
WIRE -32 960 -32 944
WIRE 656 960 656 944
WIRE 48 1040 -32 1040
WIRE 256 1040 240 1040
WIRE 736 1040 656 1040
WIRE 944 1040 928 1040
WIRE 256 1104 240 1104
WIRE 352 1104 336 1104
WIRE 944 1104 928 1104
WIRE 1040 1104 1024 1104
WIRE -32 1136 -32 1120
WIRE 48 1136 -32 1136
WIRE 656 1136 656 1120
WIRE 736 1136 656 1136
WIRE -32 1152 -32 1136
WIRE 656 1152 656 1136
WIRE 48 1232 -32 1232
WIRE 256 1232 240 1232
WIRE 736 1232 656 1232
WIRE 944 1232 928 1232
WIRE 256 1296 240 1296
WIRE 352 1296 336 1296
WIRE 944 1296 928 1296
WIRE 1040 1296 1024 1296
WIRE -32 1328 -32 1312
WIRE 48 1328 -32 1328
WIRE 656 1328 656 1312
WIRE 736 1328 656 1328
WIRE -32 1344 -32 1328
WIRE 656 1344 656 1328
WIRE 48 1424 -32 1424
WIRE 256 1424 240 1424
WIRE 736 1424 656 1424
WIRE 944 1424 928 1424
WIRE 256 1488 240 1488
WIRE 352 1488 336 1488
WIRE 944 1488 928 1488
WIRE 1040 1488 1024 1488
WIRE -32 1520 -32 1504
WIRE 48 1520 -32 1520
WIRE 656 1520 656 1504
WIRE 736 1520 656 1520
WIRE -32 1536 -32 1520
WIRE 656 1536 656 1520
WIRE 48 1616 -32 1616
WIRE 256 1616 240 1616
WIRE 736 1616 656 1616
WIRE 944 1616 928 1616
WIRE 256 1680 240 1680
WIRE 352 1680 336 1680
WIRE 944 1680 928 1680
WIRE 1040 1680 1024 1680
WIRE -32 1712 -32 1696
WIRE 48 1712 -32 1712
WIRE 656 1712 656 1696
WIRE 736 1712 656 1712
WIRE -32 1728 -32 1712
WIRE 656 1728 656 1712
WIRE 48 1808 -32 1808
WIRE 256 1808 240 1808
WIRE 736 1808 656 1808
WIRE 944 1808 928 1808
WIRE 256 1872 240 1872
WIRE 352 1872 336 1872
WIRE 944 1872 928 1872
WIRE 1040 1872 1024 1872
WIRE -32 1904 -32 1888
WIRE 48 1904 -32 1904
WIRE 656 1904 656 1888
WIRE 736 1904 656 1904
WIRE -32 1920 -32 1904
WIRE 656 1920 656 1904
FLAG 208 176 0
FLAG 256 64 out
FLAG 48 192 0
FLAG 64 64 Vref
FLAG 256 272 Vref
FLAG 352 336 out
FLAG -32 384 0
FLAG 256 464 Vref
FLAG 352 528 out
FLAG -32 576 0
FLAG 256 656 Vref
FLAG 352 720 out
FLAG -32 768 0
FLAG 256 848 Vref
FLAG 352 912 out
FLAG -32 960 0
FLAG 256 1040 Vref
FLAG 352 1104 out
FLAG -32 1152 0
FLAG 256 1232 Vref
FLAG 352 1296 out
FLAG -32 1344 0
FLAG 256 1424 Vref
FLAG 352 1488 out
FLAG -32 1536 0
FLAG 256 1616 Vref
FLAG 352 1680 out
FLAG -32 1728 0
FLAG 256 1808 Vref
FLAG 352 1872 out
FLAG -32 1920 0
FLAG 944 272 Vref
FLAG 1040 336 out
FLAG 656 384 0
FLAG 944 464 Vref
FLAG 1040 528 out
FLAG 656 576 0
FLAG 944 656 Vref
FLAG 1040 720 out
FLAG 656 768 0
FLAG 944 848 Vref
FLAG 1040 912 out
FLAG 656 960 0
FLAG 944 1040 Vref
FLAG 1040 1104 out
FLAG 656 1152 0
FLAG 944 1232 Vref
FLAG 1040 1296 out
FLAG 656 1344 0
FLAG 944 1424 Vref
FLAG 1040 1488 out
FLAG 656 1536 0
FLAG 944 1616 Vref
FLAG 1040 1680 out
FLAG 656 1728 0
FLAG 944 1808 Vref
FLAG 1040 1872 out
FLAG 656 1920 0
SYMBOL res 192 64 R0
SYMATTR InstName R0
SYMATTR Value 10k
SYMBOL voltage 48 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V0
SYMATTR Value 10
SYMBOL Optos\\4N27 144 336 R0
SYMATTR InstName U1
SYMBOL res 240 352 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 170290
SYMBOL current -32 352 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(0 10m 1m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 528 R0
SYMATTR InstName U2
SYMBOL res 240 544 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 151111
SYMBOL current -32 544 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value PULSE(0 10m 2m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 720 R0
SYMATTR InstName U3
SYMBOL res 240 736 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 133333
SYMBOL current -32 736 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I3
SYMATTR Value PULSE(0 10m 3m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 912 R0
SYMATTR InstName U4
SYMBOL res 240 928 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 116667
SYMBOL current -32 928 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I4
SYMATTR Value PULSE(0 10m 4m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 1104 R0
SYMATTR InstName U5
SYMBOL res 240 1120 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 101111
SYMBOL current -32 1120 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I5
SYMATTR Value PULSE(0 10m 5m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 1296 R0
SYMATTR InstName U6
SYMBOL res 240 1312 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 86667
SYMBOL current -32 1312 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I6
SYMATTR Value PULSE(0 10m 6m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 1488 R0
SYMATTR InstName U7
SYMBOL res 240 1504 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 73333
SYMBOL current -32 1504 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I7
SYMATTR Value PULSE(0 10m 7m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 1680 R0
SYMATTR InstName U8
SYMBOL res 240 1696 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 61111
SYMBOL current -32 1696 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I8
SYMATTR Value PULSE(0 10m 8m 100n 100n 1 1)
SYMBOL Optos\\4N27 144 1872 R0
SYMATTR InstName U9
SYMBOL res 240 1888 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R9
SYMATTR Value 50000
SYMBOL current -32 1888 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I9
SYMATTR Value PULSE(0 10m 9m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 336 R0
SYMATTR InstName U10
SYMBOL res 928 352 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R10
SYMATTR Value 40000
SYMBOL current 656 352 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I10
SYMATTR Value PULSE(0 10m 10m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 528 R0
SYMATTR InstName U11
SYMBOL res 928 544 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 31111
SYMBOL current 656 544 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I11
SYMATTR Value PULSE(0 10m 11m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 720 R0
SYMATTR InstName U12
SYMBOL res 928 736 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 23333
SYMBOL current 656 736 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I12
SYMATTR Value PULSE(0 10m 12m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 912 R0
SYMATTR InstName U13
SYMBOL res 928 928 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R13
SYMATTR Value 16667
SYMBOL current 656 928 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I13
SYMATTR Value PULSE(0 10m 13m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 1104 R0
SYMATTR InstName U14
SYMBOL res 928 1120 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R14
SYMATTR Value 11111
SYMBOL current 656 1120 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I14
SYMATTR Value PULSE(0 10m 14m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 1296 R0
SYMATTR InstName U15
SYMBOL res 928 1312 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R15
SYMATTR Value 6667
SYMBOL current 656 1312 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I15
SYMATTR Value PULSE(0 10m 15m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 1488 R0
SYMATTR InstName U16
SYMBOL res 928 1504 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R16
SYMATTR Value 3333
SYMBOL current 656 1504 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I16
SYMATTR Value PULSE(0 10m 16m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 1680 R0
SYMATTR InstName U17
SYMBOL res 928 1696 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R17
SYMATTR Value 1111
SYMBOL current 656 1696 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I17
SYMATTR Value PULSE(0 10m 17m 100n 100n 1 1)
SYMBOL Optos\\4N27 832 1872 R0
SYMATTR InstName U18
SYMBOL res 928 1888 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R18
SYMATTR Value 1m
SYMBOL current 656 1888 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I18
SYMATTR Value PULSE(0 10m 18m 100n 100n 1 1)
TEXT 16 -8 Left 2 !.tran 20m