Version 4 SHEET 1 4188 1652 WIRE 1920 608 1712 608 WIRE 2256 608 1920 608 WIRE 2320 608 2256 608 WIRE 2384 608 2320 608 WIRE 2624 608 2384 608 WIRE 2880 608 2624 608 WIRE 2976 608 2880 608 WIRE 1920 624 1920 608 WIRE 2384 624 2384 608 WIRE 2976 640 2976 608 WIRE 2880 656 2880 608 WIRE 2624 704 2624 608 WIRE 1920 720 1920 704 WIRE 2320 720 2320 608 WIRE 2384 752 2384 704 WIRE 2416 752 2384 752 WIRE 2880 752 2880 736 WIRE 2880 752 2832 752 WIRE 2256 784 2256 608 WIRE 2048 816 1984 816 WIRE 2160 816 2112 816 WIRE 2224 816 2160 816 WIRE 2320 816 2320 800 WIRE 2416 816 2320 816 WIRE 2976 816 2976 720 WIRE 2976 816 2832 816 WIRE 2160 832 2160 816 WIRE 2256 880 2256 864 WIRE 2416 880 2256 880 WIRE 2912 880 2832 880 WIRE 3232 880 2912 880 WIRE 1904 912 1776 912 WIRE 1984 912 1984 816 WIRE 1984 912 1904 912 WIRE 2048 912 1984 912 WIRE 2160 912 2160 896 WIRE 2160 912 2128 912 WIRE 2192 912 2160 912 WIRE 1776 928 1776 912 WIRE 1904 944 1904 912 WIRE 2160 944 2160 912 WIRE 2224 944 2224 816 WIRE 2416 944 2224 944 WIRE 2912 944 2912 880 WIRE 2912 944 2832 944 WIRE 1984 960 1984 912 WIRE 3056 960 3008 960 WIRE 3136 960 3056 960 WIRE 3232 960 3232 880 WIRE 3232 960 3200 960 WIRE 3296 960 3232 960 WIRE 3408 960 3296 960 WIRE 3296 976 3296 960 WIRE 3408 976 3408 960 WIRE 3056 992 3056 960 WIRE 2192 1008 2192 912 WIRE 2416 1008 2192 1008 WIRE 3008 1008 3008 960 WIRE 3008 1008 2832 1008 WIRE 1776 1024 1776 1008 WIRE 1904 1024 1904 1008 WIRE 2160 1040 2160 1008 WIRE 2416 1072 2224 1072 WIRE 3056 1072 3056 1056 WIRE 3056 1072 2832 1072 WIRE 3120 1072 3056 1072 WIRE 3232 1072 3232 960 WIRE 3232 1072 3200 1072 WIRE 3296 1072 3296 1040 WIRE 3408 1072 3408 1056 WIRE 1888 1104 1872 1104 WIRE 1984 1104 1984 1040 WIRE 1984 1104 1968 1104 WIRE 2224 1104 2224 1072 WIRE 2224 1104 1984 1104 WIRE 3056 1104 3056 1072 WIRE 3232 1104 3232 1072 WIRE 2336 1136 2320 1136 WIRE 2416 1136 2400 1136 WIRE 3008 1136 2832 1136 WIRE 3056 1184 3056 1168 WIRE 1712 1200 1712 608 WIRE 2064 1200 1712 1200 WIRE 2176 1200 2144 1200 WIRE 2416 1200 2176 1200 WIRE 2848 1200 2832 1200 WIRE 2960 1200 2912 1200 WIRE 2176 1216 2176 1200 WIRE 3008 1216 3008 1136 WIRE 3232 1216 3232 1184 WIRE 3232 1216 3008 1216 WIRE 3232 1232 3232 1216 WIRE 2320 1264 2288 1264 WIRE 2416 1264 2400 1264 WIRE 2912 1264 2832 1264 WIRE 3040 1264 2976 1264 WIRE 3136 1264 3120 1264 WIRE 1920 1296 1808 1296 WIRE 2016 1296 1920 1296 WIRE 2064 1296 2016 1296 WIRE 2176 1296 2176 1280 WIRE 2176 1296 2144 1296 WIRE 1808 1312 1808 1296 WIRE 2016 1312 2016 1296 WIRE 2176 1312 2176 1296 WIRE 1920 1328 1920 1296 WIRE 2288 1328 2288 1264 WIRE 2416 1328 2288 1328 WIRE 2848 1328 2832 1328 WIRE 2976 1328 2912 1328 WIRE 3136 1328 3056 1328 WIRE 3232 1328 3232 1312 WIRE 2176 1392 2176 1376 WIRE 2336 1392 2320 1392 WIRE 2416 1392 2400 1392 WIRE 2912 1392 2832 1392 WIRE 3040 1392 2976 1392 WIRE 3136 1392 3120 1392 WIRE 1808 1424 1808 1392 WIRE 1920 1424 1920 1392 WIRE 2016 1424 2016 1392 WIRE 2288 1424 2288 1328 WIRE 2288 1424 2016 1424 WIRE 2624 1456 2624 1424 FLAG 1920 720 0 FLAG 2624 1456 0 FLAG 2960 1200 0 FLAG 3232 1328 0 FLAG 3056 1184 0 FLAG 3296 1072 0 FLAG 3408 1072 0 FLAG 3408 960 OUT1 FLAG 3136 1264 0 FLAG 2320 1136 0 FLAG 1872 1104 0 FLAG 2160 1040 0 FLAG 1904 1024 0 FLAG 1776 1024 0 FLAG 1776 912 OUT2 FLAG 3136 1328 0 FLAG 3136 1392 0 FLAG 2320 1392 0 FLAG 2176 1392 0 FLAG 1920 1424 0 FLAG 1808 1424 0 FLAG 1808 1296 OUT3 FLAG 1920 608 IN SYMBOL VOLTAGE 1920 608 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 2848 1216 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C5 SYMATTR Value .00047µ SYMBOL cap 3040 992 R0 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL RES 3216 1088 R0 SYMATTR InstName R3 SYMATTR Value 10.7K SYMBOL res 3216 1328 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R4 SYMATTR Value 2.49K SYMBOL schottky 3040 1168 M180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D3 SYMATTR Value MBRS340 SYMBOL diode 3200 944 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D4 SYMATTR Value 1N914 SYMBOL cap 3280 976 R0 SYMATTR InstName C8 SYMATTR Value 22µ SYMBOL res 3392 960 R0 SYMATTR InstName Rload1 SYMATTR Value 2.35 SYMBOL cap 2912 1280 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C9 SYMATTR Value 6800p SYMBOL res 2368 608 R0 SYMATTR InstName R5 SYMATTR Value 10K SYMBOL cap 2400 1152 M270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C6 SYMATTR Value .00047µ SYMBOL cap 2144 832 R0 WINDOW 3 30 56 Left 0 SYMATTR Value .1µ SYMATTR InstName C10 SYMBOL RES 1968 944 R0 WINDOW 3 35 87 Left 0 SYMATTR Value 6.19K SYMATTR InstName R6 SYMBOL res 1872 1088 M90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 3.3K SYMBOL schottky 2176 1008 R180 WINDOW 0 27 61 Left 0 WINDOW 3 18 4 Left 0 SYMATTR InstName D5 SYMATTR Value MBRS130L SYMBOL diode 2048 800 M90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D6 SYMATTR Value 1N914 SYMBOL cap 1888 944 R0 SYMATTR InstName C11 SYMATTR Value 22µ SYMBOL res 1760 912 R0 SYMATTR InstName Rload2 SYMATTR Value 2.35 SYMBOL res 2304 816 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R8 SYMATTR Value 10K SYMBOL PowerProducts\\LT1941 2624 1056 R0 SYMATTR InstName U1 SYMBOL res 2240 880 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL res 2864 640 R0 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL res 2960 736 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R9 SYMATTR Value 10K SYMBOL res 3136 1248 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R10 SYMATTR Value 4.7K SYMBOL res 3072 1312 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R11 SYMATTR Value 4.7K SYMBOL cap 2848 1344 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C1 SYMATTR Value 6800p SYMBOL res 3136 1376 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R12 SYMATTR Value 4.7K SYMBOL cap 2912 1408 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C2 SYMATTR Value 680p SYMBOL cap 2400 1408 M270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C3 SYMATTR Value .00047µ SYMBOL cap 2160 1216 R0 SYMATTR InstName C12 SYMATTR Value 1µ SYMATTR SpiceLine Rser=.1 SYMBOL schottky 2160 1312 R0 WINDOW 3 35 61 Left 0 SYMATTR Value 1N5818 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1904 1328 R0 SYMATTR InstName C13 SYMATTR Value 10µ SYMATTR SpiceLine Rser=100m SYMBOL res 1792 1296 R0 SYMATTR InstName Rload3 SYMATTR Value 35 SYMBOL ind2 2048 1216 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 4 56 VBottom 0 SYMATTR InstName L3 SYMATTR Value 10µ SYMATTR Type ind SYMBOL ind2 2048 1312 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 4 56 VBottom 0 SYMATTR InstName L4 SYMATTR Value 10µ SYMATTR Type ind SYMBOL ind 2144 928 M270 WINDOW 0 32 56 VTop 0 WINDOW 3 4 56 VBottom 0 SYMATTR InstName L2 SYMATTR Value 3µ SYMBOL ind 3104 1088 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 4 56 VBottom 0 SYMATTR InstName L1 SYMATTR Value 3µ SYMBOL res 2000 1408 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R13 SYMATTR Value 133K SYMBOL res 2416 1248 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R14 SYMATTR Value 13.7K TEXT 2808 1472 Left 0 !.tran 600u startup TEXT 1920 1240 Left 0 !K1 L3 L4 1