Version 4
SHEET 1 1348 680
WIRE 480 32 464 32
WIRE 704 32 560 32
WIRE 176 48 128 48
WIRE 336 48 240 48
WIRE 880 80 864 80
WIRE 1040 80 960 80
WIRE -272 160 -448 160
WIRE 128 160 128 48
WIRE 128 160 -192 160
WIRE 176 160 128 160
WIRE 336 176 336 48
WIRE 336 176 240 176
WIRE 368 176 336 176
WIRE 464 176 464 32
WIRE 464 176 448 176
WIRE 496 176 464 176
WIRE 176 192 112 192
WIRE 704 192 704 32
WIRE 704 192 560 192
WIRE 768 192 704 192
WIRE 864 192 864 80
WIRE 864 192 848 192
WIRE 880 192 864 192
WIRE 496 208 448 208
WIRE 1040 208 1040 80
WIRE 1040 208 944 208
WIRE 1136 208 1040 208
WIRE 832 224 784 224
WIRE 880 224 832 224
WIRE 112 240 112 192
WIRE 448 256 448 208
WIRE 832 256 832 224
WIRE 832 352 832 336
WIRE -224 416 -288 416
WIRE -176 416 -224 416
WIRE -224 432 -224 416
FLAG 112 240 0
FLAG -288 336 V+
IOPIN -288 336 Out
FLAG 208 144 V+
IOPIN 208 144 In
FLAG 208 208 V-
IOPIN 208 208 In
FLAG -176 336 V-
IOPIN -176 336 Out
FLAG -224 432 0
FLAG 912 240 V-
IOPIN 912 240 In
FLAG 912 176 V+
IOPIN 912 176 In
FLAG 832 352 0
FLAG 448 256 0
FLAG 528 224 V-
IOPIN 528 224 In
FLAG 528 160 V+
IOPIN 528 160 In
FLAG 704 224 V+
IOPIN 704 224 Out
FLAG -448 160 V+
IOPIN -448 160 Out
SYMBOL Comparators\\LT1716 208 176 R0
SYMATTR InstName U1
SYMBOL polcap 176 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
WINDOW 40 60 90 VBottom 2
SYMATTR InstName C1
SYMATTR Value 220µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=25 Irms=625m Rser=0.12 Lser=0 mfg="Panasonic" pn="ECA1EFQ221" type="Al electrolytic"
SYMATTR SpiceLine2 IC=0 V
SYMBOL res -176 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL Misc\\signal -288 320 R0
WINDOW 3 -90 46 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V+
SYMATTR Value 15
SYMBOL Misc\\signal -176 320 R0
WINDOW 3 56 49 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V-
SYMATTR Value -15
SYMBOL Comparators\\LT1716 912 208 R0
SYMATTR InstName U2
SYMBOL res 800 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 200k
SYMBOL res 848 352 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 200k
SYMBOL res 752 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 200k
SYMBOL res 864 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 200k
SYMBOL Comparators\\LT1716 528 192 R0
SYMATTR InstName U3
SYMBOL res 464 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 200k
SYMBOL res 576 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 200k
TEXT -258 456 Left 2 !.tran 400