Version 4
SHEET 1 972 724
WIRE 48 0 -64 0
WIRE 128 0 48 0
WIRE 208 0 128 0
WIRE 352 0 336 0
WIRE 432 0 416 0
WIRE -64 16 -64 0
WIRE 208 48 208 0
WIRE 336 48 336 0
WIRE -64 112 -64 96
WIRE 48 112 48 0
WIRE 128 112 128 0
WIRE 144 112 128 112
WIRE 432 112 432 0
WIRE 432 112 400 112
WIRE 448 112 432 112
WIRE 544 112 528 112
WIRE 608 112 544 112
WIRE 688 112 608 112
WIRE 608 128 608 112
WIRE 688 128 688 112
WIRE 48 208 48 192
WIRE 144 208 48 208
WIRE 544 208 544 112
WIRE 544 208 400 208
WIRE 608 224 608 192
WIRE 688 224 688 208
WIRE 48 304 32 304
WIRE 144 304 128 304
WIRE 544 304 544 208
WIRE 544 304 400 304
WIRE 272 384 272 368
FLAG 272 384 0
FLAG 32 304 0
FLAG 608 224 0
FLAG 688 224 0
FLAG -64 112 0
FLAG -64 0 IN
FLAG 688 112 OUT
SYMBOL ind 432 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 22µ
SYMBOL res 144 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 226K
SYMBOL cap 352 16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value .22µ
SYMBOL cap 592 128 R0
SYMATTR InstName C2
SYMATTR Value 22µ
SYMBOL res 32 96 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL voltage -64 0 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL res 672 112 R0
SYMATTR InstName Rload
SYMATTR Value 15
SYMBOL PowerProducts\\LT3970-5 272 208 R0
SYMATTR InstName U1
TEXT 496 352 Left 2 !.tran 750u startup