Version 4
SHEET 1 1636 680
WIRE -64 -64 -176 -64
WIRE 240 -64 -64 -64
WIRE 512 -64 240 -64
WIRE 672 -64 512 -64
WIRE -176 -48 -176 -64
WIRE 512 -48 512 -64
WIRE -64 -32 -64 -64
WIRE 800 -32 720 -32
WIRE 912 -32 864 -32
WIRE 1024 -32 912 -32
WIRE 672 -16 672 -64
WIRE 720 -16 720 -32
WIRE 912 -16 912 -32
WIRE 1024 -16 1024 -32
WIRE 512 32 512 16
WIRE -176 48 -176 32
WIRE 240 48 240 -64
WIRE 720 80 720 64
WIRE 912 80 912 48
WIRE 1024 80 1024 64
WIRE -64 112 -64 48
WIRE 80 112 -64 112
WIRE 416 112 400 112
WIRE 512 112 512 96
WIRE 512 112 496 112
WIRE 672 112 672 64
WIRE 672 112 512 112
WIRE -64 128 -64 112
WIRE 672 192 672 112
WIRE 672 192 400 192
WIRE -64 224 -64 208
WIRE -64 272 -112 272
WIRE 80 272 16 272
WIRE 416 272 400 272
WIRE 512 272 496 272
WIRE -96 352 -112 352
WIRE 0 352 -16 352
WIRE 80 352 64 352
WIRE 432 352 400 352
WIRE 512 352 496 352
WIRE 240 432 240 416
FLAG 240 432 0
FLAG 512 272 0
FLAG 720 80 0
FLAG 912 80 0
FLAG 1024 80 0
FLAG -64 224 0
FLAG 512 352 0
FLAG -112 352 0
FLAG -112 272 0
FLAG -176 48 0
FLAG -176 -64 IN
FLAG 1024 -32 OUT
SYMBOL ind2 656 -32 R0
WINDOW 0 4 37 Right 2
WINDOW 3 0 74 Right 2
SYMATTR InstName L1
SYMATTR Value 175µ
SYMATTR Type ind
SYMBOL ind2 736 80 R180
WINDOW 0 1 75 Right 2
WINDOW 3 0 39 Right 2
SYMATTR InstName L2
SYMATTR Value 11µ
SYMATTR Type ind
SYMBOL cap 896 -16 R0
SYMATTR InstName C1
SYMATTR Value 47µ
SYMBOL diode 496 96 M180
WINDOW 0 26 59 Left 2
WINDOW 3 25 6 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL zener 496 -48 R0
WINDOW 3 27 62 Left 2
SYMATTR Value DFLZ33
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 800 -16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMATTR Value MBR0540
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -80 -48 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res -80 112 R0
SYMATTR InstName R2
SYMATTR Value 43.2K
SYMBOL res 32 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 57.6K
SYMBOL res 512 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 169K
SYMBOL res 512 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap 496 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 4.7µ
SYMBOL cap 64 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 2.2n
SYMBOL res 0 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 16.9K
SYMBOL voltage -176 -64 R0
SYMATTR InstName V1
SYMATTR Value 50
SYMBOL res 1008 -32 R0
SYMATTR InstName R7
SYMATTR Value 20
SYMBOL PowerProducts\\LT3512 240 224 R0
SYMATTR InstName U1
TEXT 696 320 Left 2 !.tran 3m startup
TEXT 696 -64 Bottom 2 !K1 L1 L2 1.