Version 4
SHEET 1 2552 1424
WIRE 1312 928 1216 928
WIRE 1536 928 1312 928
WIRE 1216 960 1216 928
WIRE 1312 960 1312 928
WIRE 1536 960 1536 928
WIRE 1760 976 1712 976
WIRE 1824 976 1760 976
WIRE 1936 976 1904 976
WIRE 2048 976 1936 976
WIRE 2160 976 2048 976
WIRE 1760 992 1760 976
WIRE 2048 992 2048 976
WIRE 2160 992 2160 976
WIRE 1936 1008 1936 976
WIRE 1408 1040 1392 1040
WIRE 1712 1040 1712 976
WIRE 1712 1040 1664 1040
WIRE 1216 1072 1216 1040
WIRE 1312 1072 1312 1024
WIRE 1760 1072 1760 1056
WIRE 2048 1088 2048 1056
WIRE 2160 1088 2160 1072
WIRE 1936 1104 1936 1088
WIRE 1936 1104 1664 1104
WIRE 1936 1120 1936 1104
WIRE 1408 1168 1392 1168
WIRE 1696 1168 1664 1168
WIRE 1808 1168 1776 1168
WIRE 1808 1184 1808 1168
WIRE 1936 1216 1936 1200
WIRE 1536 1264 1536 1248
WIRE 1808 1264 1808 1248
FLAG 1808 1264 0
FLAG 1536 1264 0
FLAG 1216 1072 0
FLAG 1312 1072 0
FLAG 1760 1072 0
FLAG 2160 1088 0
FLAG 2048 1088 0
FLAG 1936 1216 0
FLAG 2160 976 OUT
FLAG 1216 928 IN
SYMBOL RES 1680 1184 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 2K
SYMBOL RES 1920 1104 R0
SYMATTR InstName R2
SYMATTR Value 2.21K
SYMBOL RES 1920 992 R0
SYMATTR InstName R1
SYMATTR Value 2.8K
SYMBOL IND 1808 992 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 50µ
SYMBOL schottky 1744 1056 M180
WINDOW 0 31 63 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL POLCAP 1296 960 R0
SYMATTR InstName C1
SYMATTR Value 470µ
SYMATTR SpiceLine Rser=0.05
SYMBOL POLCAP 2032 992 R0
SYMATTR InstName C2
SYMATTR Value 330µ
SYMATTR SpiceLine Rser=0.07
SYMBOL VOLTAGE 1216 944 R0
SYMATTR InstName V1
SYMATTR Value 20
SYMATTR SpiceLine Rser=0.02
SYMBOL cap 1792 1184 R0
SYMATTR InstName C3
SYMATTR Value .1µ
SYMBOL POWERPRODUCTS\\LT1074 1536 1104 R0
SYMATTR InstName U1
SYMBOL res 2144 976 R0
SYMATTR InstName Rload
SYMATTR Value 5
TEXT 1912 1272 Left 2 !.tran 2m steady startup