Version 4
SHEET 1 896 680
WIRE -368 -192 -400 -192
WIRE -80 -112 -80 -144
WIRE -80 -96 -80 -112
WIRE -288 -80 -288 -192
WIRE -272 -80 -288 -80
WIRE -112 -80 -192 -80
WIRE -48 -64 -48 -80
WIRE 32 -64 -48 -64
WIRE -112 -48 -176 -48
WIRE -256 0 -288 0
WIRE -176 0 -176 -48
WIRE -592 16 -592 -32
WIRE -496 16 -496 -32
WIRE -400 16 -400 -192
WIRE -80 16 -80 -48
WIRE -288 48 -288 0
WIRE -176 96 -176 0
WIRE 32 96 32 -64
WIRE 32 96 -96 96
WIRE -592 144 -592 96
WIRE -496 144 -496 96
WIRE -400 144 -400 96
WIRE -288 160 -288 128
FLAG -592 144 0
FLAG -496 144 0
FLAG -400 144 0
FLAG -592 -32 V+
FLAG -496 -32 V-
FLAG -80 -144 V+
FLAG -80 16 V-
FLAG -288 160 0
SYMBOL voltage -592 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -496 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL voltage -400 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL res -176 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1000k
SYMBOL res -80 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 200k
SYMBOL res -160 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL res -272 -208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 2000
SYMBOL voltage -288 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 6
SYMBOL Comparators\\LT1017 -80 -80 R0
SYMATTR InstName U2
TEXT -616 192 Left 2 !.tran 10m