Version 4 SHEET 1 2748 2324 WIRE 2416 1728 2016 1728 WIRE 2464 1728 2416 1728 WIRE 2608 1728 2464 1728 WIRE 2016 1760 2016 1728 WIRE 2464 1760 2464 1728 WIRE 2608 1760 2608 1728 WIRE 2144 1792 2112 1792 WIRE 2416 1792 2416 1728 WIRE 2416 1792 2400 1792 WIRE 2016 1856 2016 1840 WIRE 2144 1856 2016 1856 WIRE 2464 1856 2464 1840 WIRE 2464 1856 2400 1856 WIRE 2608 1856 2608 1840 WIRE 2464 1872 2464 1856 WIRE 2144 1920 1632 1920 WIRE 2416 1920 2400 1920 WIRE 1632 1936 1632 1920 WIRE 2016 1952 2016 1856 WIRE 2464 1952 2464 1936 WIRE 2144 1984 2112 1984 WIRE 2416 1984 2400 1984 WIRE 1632 2032 1632 2016 WIRE 2016 2048 2016 2032 WIRE 2416 2048 2416 1984 WIRE 2416 2048 2016 2048 WIRE 2016 2064 2016 2048 WIRE 2016 2160 2016 2144 FLAG 2464 1952 0 FLAG 2608 1856 0 FLAG 2112 1984 0 FLAG 1632 2032 0 FLAG 2016 2160 0 SYMBOL VOLTAGE 2608 1744 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL RES 2448 1744 R0 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL cap 2448 1872 R0 SYMATTR InstName C1 SYMATTR Value .001µ SYMBOL voltage 1632 1920 R0 WINDOW 0 37 38 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 5 0 5m 5m 0 10m) SYMBOL Comparators\\LTC1042 2272 1888 R0 SYMATTR InstName U1 SYMBOL RES 2000 1936 R0 SYMATTR InstName R2 SYMATTR Value 90K SYMBOL RES 2000 1744 R0 SYMATTR InstName R3 SYMATTR Value 100K SYMBOL RES 2000 2048 R0 SYMATTR InstName R4 SYMATTR Value 10K TEXT 2232 2136 Left 2 !.tran 10m