Version 4
SHEET 1 2740 1752
WIRE 1616 1040 1536 1040
WIRE 1808 1040 1616 1040
WIRE 2064 1040 1808 1040
WIRE 2192 1040 2112 1040
WIRE 2304 1040 2256 1040
WIRE 1536 1056 1536 1040
WIRE 2064 1056 2064 1040
WIRE 2112 1056 2112 1040
WIRE 2304 1056 2304 1040
WIRE 1536 1152 1536 1136
WIRE 2304 1152 2304 1120
WIRE 1968 1184 1936 1184
WIRE 2064 1184 2064 1136
WIRE 2064 1184 2048 1184
WIRE 1808 1232 1808 1040
WIRE 1936 1232 1936 1184
WIRE 1616 1312 1616 1040
WIRE 1728 1312 1616 1312
WIRE 2064 1312 2064 1184
WIRE 2064 1312 2016 1312
WIRE 1616 1392 1616 1312
WIRE 1632 1392 1616 1392
WIRE 1728 1392 1712 1392
WIRE 2112 1392 2112 1136
WIRE 2112 1392 2016 1392
WIRE 1616 1472 1616 1392
WIRE 1728 1472 1616 1472
WIRE 2032 1472 2016 1472
WIRE 2128 1472 2112 1472
WIRE 1808 1568 1808 1552
WIRE 1936 1568 1936 1552
WIRE 1808 1648 1808 1632
FLAG 2304 1152 0
FLAG 2128 1472 0
FLAG 1936 1568 0
FLAG 1808 1648 0
FLAG 1536 1152 0
FLAG 2304 1040 OUT
FLAG 1536 1040 IN
SYMBOL ind2 2048 1040 R0
WINDOW 0 -6 35 Right 2
WINDOW 3 -4 73 Right 2
SYMATTR InstName L1
SYMATTR Value 20µ
SYMATTR SpiceLine Rpar=2K Rser=.1
SYMBOL ind2 2128 1152 R180
WINDOW 0 -3 72 Right 2
WINDOW 3 0 43 Right 2
SYMATTR InstName L2
SYMATTR Value {20u*12*12}
SYMATTR SpiceLine Rpar=1Meg
SYMBOL RES 2064 1168 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 51.1K
SYMBOL cap 2288 1056 R0
SYMATTR InstName C1
SYMATTR Value .1µ
SYMATTR SpiceLine Rpar=.1Meg
SYMBOL diode 2192 1056 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL res 2016 1488 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL cap 1792 1568 R0
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL res 1728 1376 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL VOLTAGE 1536 1040 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL PowerProducts\\LT3420-1 1872 1392 R0
SYMATTR InstName U1
TEXT 2200 1328 Left 2 !.tran 10m startup
TEXT 2088 1040 Bottom 2 !K1 L1 L2 1