Version 4 SHEET 1 2188 2244 WIRE 1392 1056 1296 1056 WIRE 1472 1056 1392 1056 WIRE 1616 1056 1552 1056 WIRE 1680 1056 1616 1056 WIRE 1296 1072 1296 1056 WIRE 1680 1072 1680 1056 WIRE 1296 1168 1296 1152 WIRE 1392 1168 1392 1056 WIRE 1472 1168 1392 1168 WIRE 1616 1168 1616 1056 WIRE 1616 1168 1552 1168 WIRE 1680 1168 1680 1152 WIRE 1216 1232 1104 1232 WIRE 1504 1232 1216 1232 WIRE 1712 1232 1504 1232 WIRE 1904 1232 1760 1232 WIRE 2048 1232 1904 1232 WIRE 2128 1232 2048 1232 WIRE 1904 1264 1904 1232 WIRE 2128 1264 2128 1232 WIRE 1216 1280 1216 1232 WIRE 1760 1280 1760 1232 WIRE 1408 1296 1392 1296 WIRE 1504 1296 1504 1232 WIRE 1504 1296 1488 1296 WIRE 1520 1296 1504 1296 WIRE 1632 1296 1600 1296 WIRE 1104 1328 1104 1232 WIRE 1904 1360 1904 1328 WIRE 2128 1360 2128 1344 WIRE 1472 1392 1312 1392 WIRE 1760 1392 1760 1360 WIRE 1760 1392 1552 1392 WIRE 1104 1440 1104 1392 WIRE 1216 1440 1216 1360 WIRE 1216 1440 1104 1440 WIRE 1392 1488 1392 1296 WIRE 1472 1488 1392 1488 WIRE 1632 1488 1632 1296 WIRE 1632 1488 1536 1488 WIRE 1216 1520 1216 1440 WIRE 1392 1520 1392 1488 WIRE 1632 1520 1632 1488 WIRE 1312 1568 1312 1392 WIRE 1328 1568 1312 1568 WIRE 1760 1568 1760 1392 WIRE 1760 1568 1696 1568 WIRE 1216 1632 1216 1600 WIRE 1392 1632 1392 1616 WIRE 1392 1632 1216 1632 WIRE 1504 1632 1392 1632 WIRE 1632 1632 1632 1616 WIRE 1632 1632 1504 1632 WIRE 1104 1664 1104 1440 WIRE 1264 1664 1104 1664 WIRE 1504 1664 1504 1632 WIRE 816 1696 704 1696 WIRE 1040 1696 816 1696 WIRE 704 1712 704 1696 WIRE 1040 1728 1040 1696 WIRE 1264 1728 1264 1664 WIRE 704 1808 704 1792 WIRE 816 1808 816 1696 WIRE 928 1808 896 1808 WIRE 1440 1808 1376 1808 WIRE 1504 1808 1504 1744 WIRE 1504 1808 1440 1808 WIRE 1568 1808 1504 1808 WIRE 1648 1808 1632 1808 WIRE 1440 1824 1440 1808 WIRE 928 1904 896 1904 WIRE 1440 1904 1440 1888 WIRE 1440 1904 1376 1904 WIRE 2048 1904 2048 1232 WIRE 2048 1904 1440 1904 WIRE 816 2000 816 1888 WIRE 928 2000 816 2000 WIRE 1712 2000 1712 1232 WIRE 1712 2000 1376 2000 WIRE 928 2096 896 2096 WIRE 1392 2096 1376 2096 WIRE 1472 2096 1456 2096 WIRE 1040 2192 1040 2176 WIRE 1264 2192 1264 2176 FLAG 2128 1360 0 FLAG 1040 2192 0 FLAG 1472 2096 0 FLAG 704 1808 0 FLAG 1648 1808 0 FLAG 1264 2192 0 FLAG 896 1808 0 FLAG 1680 1168 0 FLAG 1296 1168 0 FLAG 1904 1360 0 SYMBOL NPN 1328 1520 R0 SYMATTR InstName Q1 SYMATTR Value FZT849 SYMBOL npn 1696 1520 M0 SYMATTR InstName Q2 SYMATTR Value FZT849 SYMBOL ind2 1392 1312 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 20µ SYMBOL ind2 1504 1312 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 20µ SYMBOL cap 1536 1472 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value .068µ SYMBOL ind2 1568 1408 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 4 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value 1µ SYMBOL VOLTAGE 2128 1248 R0 SYMATTR InstName V1 SYMATTR Value 28 SYMBOL ind2 1456 1152 M90 WINDOW 0 4 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L4 SYMATTR Value 50m SYMBOL RES 1568 1040 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 70K SYMBOL ind 1488 1648 R0 SYMATTR InstName L5 SYMATTR Value 100µ SYMBOL schottky 1424 1824 R0 WINDOW 3 31 65 Left 2 SYMATTR Value 1N5818 SYMATTR InstName D1 SYMBOL res 1200 1264 R0 SYMATTR InstName R2 SYMATTR Value 220K SYMBOL res 1200 1504 R0 SYMATTR InstName R3 SYMATTR Value 100K SYMBOL cap 1088 1328 R0 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL res 800 1792 R0 SYMATTR InstName R4 SYMATTR Value 89.6K SYMBOL schottky 1632 1792 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value 1N5818 SYMBOL cap 1392 2112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 1µ SYMBOL VOLTAGE 704 1696 R0 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL cap 1888 1264 R0 WINDOW 39 24 92 Left 2 SYMATTR InstName C5 SYMATTR Value 2.2µ SYMBOL res 1744 1264 R0 SYMATTR InstName R5 SYMATTR Value 500 SYMBOL POWERPRODUCTS\\LT1184F 1152 1952 R0 SYMATTR InstName U1 SYMBOL res 1664 1056 R0 SYMATTR InstName R6 SYMATTR Value 1G SYMBOL res 1280 1056 R0 SYMATTR InstName R7 SYMATTR Value 1G TEXT 1736 2064 Left 2 !.tran 10m startup TEXT 1552 1208 Left 2 !K1 L1 L2 L3 L4 1