Version 4
SHEET 1 1436 800
WIRE 928 64 736 64
WIRE 1056 64 928 64
WIRE 1152 64 1056 64
WIRE 736 80 736 64
WIRE 1056 80 1056 64
WIRE 1152 80 1152 64
WIRE 928 112 928 64
WIRE 848 160 816 160
WIRE 736 176 736 160
WIRE 1056 176 1056 160
WIRE 1056 176 1008 176
WIRE 608 240 576 240
WIRE 816 240 816 160
WIRE 816 240 688 240
WIRE 848 240 816 240
WIRE 1152 256 1152 160
WIRE 1152 256 1008 256
WIRE 848 304 832 304
WIRE 976 400 976 384
WIRE 880 416 880 384
FLAG 736 176 0
FLAG 576 240 0
FLAG 880 416 0
SYMBOL voltage 736 64 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 704 240 R90
WINDOW 3 32 56 VTop 2
WINDOW 123 74 56 VTop 2
WINDOW 39 53 56 VTop 2
WINDOW 0 -32 56 VBottom 2
SYMATTR Value PULSE(0 3.3 0 .5m .5m 0 1m)
SYMATTR InstName V2
SYMBOL res 1040 64 R0
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL Comparators\\LTC1842 928 240 R0
SYMATTR InstName U1
SYMBOL res 1136 64 R0
SYMATTR InstName R2
SYMATTR Value 10K
TEXT 1096 352 Left 2 !.tran 3m