Version 4 SHEET 1 2576 1300 WIRE 1856 544 1808 544 WIRE 1968 544 1920 544 WIRE 2064 544 1968 544 WIRE 2192 544 2128 544 WIRE 2368 544 2192 544 WIRE 1968 560 1968 544 WIRE 2192 560 2192 544 WIRE 2368 560 2368 544 WIRE 1856 624 1440 624 WIRE 1440 640 1440 624 WIRE 2192 656 2192 624 WIRE 2368 656 2368 640 WIRE 1616 720 1520 720 WIRE 1744 720 1680 720 WIRE 1760 720 1744 720 WIRE 1856 720 1856 624 WIRE 1856 720 1840 720 WIRE 1872 720 1856 720 WIRE 1968 720 1968 624 WIRE 1968 720 1952 720 WIRE 2016 720 1968 720 WIRE 2128 720 2080 720 WIRE 2256 720 2128 720 WIRE 2368 720 2256 720 WIRE 1440 736 1440 720 WIRE 2368 736 2368 720 WIRE 2128 752 2128 720 WIRE 2256 752 2256 720 WIRE 1744 800 1744 720 WIRE 1856 800 1856 720 WIRE 1968 800 1968 720 WIRE 2256 832 2256 816 WIRE 2368 832 2368 816 WIRE 1408 880 1264 880 WIRE 1520 880 1520 720 WIRE 1520 880 1408 880 WIRE 1664 880 1520 880 WIRE 2128 880 2128 832 WIRE 2128 880 2048 880 WIRE 1264 896 1264 880 WIRE 1408 896 1408 880 WIRE 1520 896 1520 880 WIRE 2128 912 2128 880 WIRE 1264 992 1264 976 WIRE 1408 992 1408 960 WIRE 1520 992 1520 976 WIRE 1664 992 1520 992 WIRE 1520 1008 1520 992 WIRE 2128 1008 2128 992 WIRE 1520 1104 1520 1088 WIRE 1664 1104 1648 1104 WIRE 2080 1104 2048 1104 WIRE 2176 1104 2160 1104 WIRE 1760 1200 1760 1184 WIRE 1952 1200 1952 1184 WIRE 1760 1280 1760 1264 FLAG 2128 1008 0 FLAG 2256 832 0 FLAG 2368 832 0 FLAG 1760 1280 0 FLAG 1952 1200 0 FLAG 1520 1104 0 FLAG 1408 992 0 FLAG 2192 656 0 FLAG 1808 544 0 FLAG 2368 656 0 FLAG 2176 1104 0 FLAG 1440 736 0 FLAG 1264 880 +24 FLAG 2368 544 -8 FLAG 2368 720 +8 FLAG 1264 992 0 FLAG 1440 624 IN SYMBOL ind 1856 736 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 3.3µ SYMBOL ind 1744 736 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 4.7µ SYMBOL schottky 2016 736 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value 1N5819 SYMBOL RES 2112 736 R0 SYMATTR InstName R1 SYMATTR Value 53.6K SYMBOL res 2112 896 R0 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL cap 2240 752 R0 WINDOW 123 34 64 Left 2 WINDOW 3 36 38 Left 2 SYMATTR Value2 x2 SYMATTR Value 3.3µ SYMATTR InstName C1 SYMBOL cap 1744 1200 R0 SYMATTR InstName C2 SYMATTR Value 10n SYMBOL schottky 1680 736 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value 1N5819 SYMBOL res 1504 992 R0 SYMATTR InstName R3 SYMATTR Value 10K SYMBOL res 1504 880 R0 SYMATTR InstName R4 SYMATTR Value 182K SYMBOL cap 1392 896 R0 SYMATTR InstName C3 SYMATTR Value .22µ SYMBOL cap 1952 560 R0 SYMATTR InstName C4 SYMATTR Value .68µ SYMBOL schottky 1920 560 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value 1N5819 SYMBOL schottky 2128 560 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D4 SYMATTR Value 1N5819 SYMBOL cap 2176 560 R0 SYMATTR InstName C5 SYMATTR Value .68µ SYMBOL res 2064 1120 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 2.4K SYMBOL VOLTAGE 1440 624 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL POWERPRODUCTS\\LT1947 1856 992 R0 SYMATTR InstName U1 SYMBOL res 2352 544 R0 SYMATTR InstName Rload2 SYMATTR Value 800 SYMBOL res 2352 720 R0 SYMATTR InstName Rload3 SYMATTR Value 40 SYMBOL res 1248 880 R0 SYMATTR InstName Rload1 SYMATTR Value 5K TEXT 2000 1240 Left 2 !.tran 500u startup