Version 4
SHEET 1 2552 1424
WIRE 1536 944 1264 944
WIRE 1264 960 1264 944
WIRE 1536 960 1536 944
WIRE 1760 976 1712 976
WIRE 1856 976 1760 976
WIRE 1984 976 1936 976
WIRE 2096 976 1984 976
WIRE 2208 976 2096 976
WIRE 1760 992 1760 976
WIRE 1984 992 1984 976
WIRE 2096 992 2096 976
WIRE 2208 992 2208 976
WIRE 1408 1040 1392 1040
WIRE 1712 1040 1712 976
WIRE 1712 1040 1664 1040
WIRE 1264 1056 1264 1040
WIRE 1760 1072 1760 1056
WIRE 2096 1088 2096 1056
WIRE 2208 1088 2208 1072
WIRE 1984 1104 1984 1072
WIRE 1984 1104 1664 1104
WIRE 1984 1120 1984 1104
WIRE 1408 1168 1392 1168
WIRE 1696 1168 1664 1168
WIRE 1808 1168 1776 1168
WIRE 1808 1184 1808 1168
WIRE 1984 1216 1984 1200
WIRE 1536 1264 1536 1248
WIRE 1808 1264 1808 1248
FLAG 1808 1264 0
FLAG 1536 1264 0
FLAG 1264 1056 0
FLAG 1760 1072 0
FLAG 2208 1088 0
FLAG 2096 1088 0
FLAG 1984 1216 0
FLAG 2208 976 OUT
FLAG 1264 944 IN
SYMBOL RES 1680 1184 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 2K
SYMBOL RES 1968 1104 R0
SYMATTR InstName R2
SYMATTR Value 2.21K
SYMBOL RES 1968 976 R0
SYMATTR InstName R3
SYMATTR Value 2.8K
SYMBOL ind 1840 992 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 50µ
SYMATTR SpiceLine Rpar=2K
SYMBOL schottky 1744 1056 M180
WINDOW 0 31 63 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MBRS140
SYMBOL POLCAP 2080 992 R0
SYMATTR InstName C1
SYMATTR Value 330µ
SYMATTR SpiceLine Rser=0.07
SYMBOL cap 1792 1184 R0
SYMATTR InstName C2
SYMATTR Value .1µ
SYMBOL PowerProducts\\LT1074HV 1536 1104 R0
SYMATTR InstName U1
SYMBOL voltage 1264 944 R0
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL res 2192 976 R0
SYMATTR InstName Rload
SYMATTR Value 5
TEXT 1904 1272 Left 2 !.tran 2m startup