Version 4
SHEET 1 1104 804
WIRE -352 64 -448 64
WIRE 32 64 -352 64
WIRE 560 64 160 64
WIRE -448 80 -448 64
WIRE -352 80 -352 64
WIRE 32 96 32 64
WIRE 160 96 160 64
WIRE -64 160 -352 160
WIRE 560 160 560 64
WIRE 560 160 256 160
WIRE -448 176 -448 160
WIRE -352 176 -352 160
WIRE -240 240 -256 240
WIRE -160 240 -176 240
WIRE -64 240 -80 240
WIRE 288 240 256 240
WIRE 384 240 288 240
WIRE 448 240 384 240
WIRE 560 240 560 160
WIRE 560 240 528 240
WIRE 656 240 560 240
WIRE 752 240 656 240
WIRE 848 240 752 240
WIRE -352 256 -352 240
WIRE 288 256 288 240
WIRE 384 256 384 240
WIRE 752 256 752 240
WIRE 848 256 848 240
WIRE 560 272 560 240
WIRE -208 320 -256 320
WIRE -64 320 -128 320
WIRE 288 320 256 320
WIRE 384 336 384 320
WIRE 656 336 656 240
WIRE 752 352 752 320
WIRE 848 352 848 336
WIRE -64 400 -80 400
WIRE 560 400 560 352
WIRE 560 400 256 400
WIRE 560 416 560 400
WIRE 96 464 96 448
WIRE 560 512 560 496
WIRE -80 544 -80 400
WIRE 656 544 656 416
WIRE 656 544 -80 544
FLAG 384 336 0
FLAG 752 352 0
FLAG 560 512 0
FLAG -256 240 0
FLAG -448 176 0
FLAG 96 464 0
FLAG 848 352 0
FLAG -256 320 0
FLAG -352 256 0
FLAG 848 240 OUT
FLAG -448 64 IN
SYMBOL ind 432 256 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 4.7µ
SYMATTR SpiceLine Rpar=2K
SYMBOL schottky 368 320 M180
WINDOW 0 37 61 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 736 256 R0
SYMATTR InstName C1
SYMATTR Value 22µ
SYMBOL voltage -448 64 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL res 544 256 R0
SYMATTR InstName R1
SYMATTR Value 324K
SYMBOL res 544 400 R0
SYMATTR InstName R2
SYMATTR Value 200K
SYMBOL cap 272 256 R0
WINDOW 3 30 49 Left 2
SYMATTR Value .47µ
SYMATTR InstName C2
SYMBOL cap -176 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 680p
SYMBOL res -64 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 16.2K
SYMBOL res -112 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 60.4K
SYMBOL res 640 320 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL res -368 64 R0
SYMATTR InstName R6
SYMATTR Value 500K
SYMBOL cap -368 176 R0
SYMATTR InstName C4
SYMATTR Value .01µ
SYMBOL res 832 240 R0
SYMATTR InstName Rload
SYMATTR Value 1.5
SYMBOL PowerProducts\\LT1938 96 288 R0
SYMATTR InstName U1
TEXT 736 528 Left 2 !.tran 750u startup