Version 4 SHEET 1 2732 1860 WIRE 1360 1120 1216 1120 WIRE 1456 1120 1360 1120 WIRE 1616 1120 1520 1120 WIRE 1680 1120 1616 1120 WIRE 2416 1120 1744 1120 WIRE 1216 1136 1216 1120 WIRE 1360 1136 1360 1120 WIRE 1616 1168 1616 1120 WIRE 2032 1168 1936 1168 WIRE 2032 1184 2032 1168 WIRE 1216 1232 1216 1216 WIRE 1360 1232 1360 1200 WIRE 2032 1280 2032 1264 WIRE 1360 1312 1232 1312 WIRE 1456 1312 1360 1312 WIRE 1504 1312 1456 1312 WIRE 1616 1312 1616 1232 WIRE 1616 1312 1568 1312 WIRE 1632 1312 1616 1312 WIRE 1728 1312 1712 1312 WIRE 1936 1312 1936 1168 WIRE 1936 1312 1728 1312 WIRE 2144 1312 1936 1312 WIRE 2160 1312 2144 1312 WIRE 2256 1312 2240 1312 WIRE 2304 1312 2256 1312 WIRE 2416 1312 2416 1120 WIRE 2416 1312 2368 1312 WIRE 2528 1312 2416 1312 WIRE 2624 1312 2528 1312 WIRE 1232 1328 1232 1312 WIRE 1360 1328 1360 1312 WIRE 2528 1328 2528 1312 WIRE 2624 1328 2624 1312 WIRE 1936 1360 1936 1312 WIRE 1456 1392 1456 1312 WIRE 2416 1392 2416 1312 WIRE 1232 1424 1232 1408 WIRE 1360 1424 1360 1392 WIRE 1728 1424 1728 1312 WIRE 1760 1424 1728 1424 WIRE 2144 1424 2144 1312 WIRE 2144 1424 2112 1424 WIRE 2528 1424 2528 1392 WIRE 2624 1424 2624 1408 WIRE 1616 1488 1616 1312 WIRE 1760 1488 1616 1488 WIRE 2256 1488 2256 1312 WIRE 2256 1488 2112 1488 WIRE 1456 1552 1456 1472 WIRE 1760 1552 1456 1552 WIRE 2416 1552 2416 1472 WIRE 2416 1552 2112 1552 WIRE 1456 1568 1456 1552 WIRE 2416 1568 2416 1552 WIRE 1824 1632 1824 1616 WIRE 1936 1632 1936 1616 WIRE 2048 1632 2048 1616 WIRE 1456 1664 1456 1648 WIRE 2416 1664 2416 1648 FLAG 1456 1664 0 FLAG 1824 1632 0 FLAG 1936 1632 0 FLAG 2048 1632 0 FLAG 2416 1664 0 FLAG 1360 1424 0 FLAG 2528 1424 0 FLAG 2624 1424 0 FLAG 1232 1424 0 FLAG 2032 1280 0 FLAG 1360 1232 0 FLAG 1216 1232 0 FLAG 1232 1312 OUT1 FLAG 2624 1312 OUT2 FLAG 2032 1168 IN FLAG 1216 1120 OUT3 SYMBOL ind 2144 1328 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 22µ SYMATTR SpiceLine Rpar=10K SYMBOL ind 1728 1328 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 22µ SYMATTR SpiceLine Rpar=2K SYMBOL RES 1440 1376 R0 SYMATTR InstName R1 SYMATTR Value 2Meg SYMBOL res 1440 1552 R0 SYMATTR InstName R2 SYMATTR Value 178K SYMBOL schottky 1568 1296 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value 1N5819 SYMBOL res 2400 1376 R0 SYMATTR InstName R3 SYMATTR Value 1Meg SYMBOL res 2400 1552 R0 SYMATTR InstName R4 SYMATTR Value 324K SYMBOL schottky 2304 1296 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value MBRS360 SYMBOL cap 2512 1328 R0 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMBOL cap 1344 1328 R0 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL VOLTAGE 2032 1168 R0 SYMATTR InstName V1 SYMATTR Value 3.5 SYMBOL POWERPRODUCTS\\LT1944-1 1936 1488 R0 SYMATTR InstName U1 SYMBOL cap 1344 1136 R0 SYMATTR InstName C3 SYMATTR Value 1µ SYMBOL schottky 1456 1104 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D3 SYMATTR Value 1N5819 SYMBOL schottky 1680 1104 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D4 SYMATTR Value 1N5819 SYMBOL cap 1600 1168 R0 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL res 2608 1312 R0 SYMATTR InstName Rload2 SYMATTR Value 125 SYMBOL res 1216 1312 R0 SYMATTR InstName Rload1 SYMATTR Value 6K SYMBOL res 1200 1120 R0 SYMATTR InstName Rload3 SYMATTR Value 10K TEXT 2496 1512 Left 2 !.tran 4m startup