Version 4
SHEET 1 3708 680
WIRE 32 96 0 96
WIRE 80 96 32 96
WIRE 384 96 336 96
WIRE 448 96 384 96
WIRE 592 96 448 96
WIRE 848 96 592 96
WIRE 0 144 0 96
WIRE 752 192 480 192
WIRE 848 192 848 176
WIRE 848 192 752 192
WIRE 384 208 384 176
WIRE 592 256 592 176
WIRE 592 256 576 256
WIRE 608 256 592 256
WIRE 848 256 848 192
WIRE 208 288 208 192
WIRE 384 288 208 288
WIRE 208 304 208 288
WIRE 480 304 480 272
WIRE 512 304 480 304
WIRE 704 304 672 256
WIRE 784 304 768 304
WIRE 480 320 480 304
WIRE 0 416 0 224
WIRE 208 416 208 384
WIRE 208 416 0 416
WIRE 480 416 480 400
WIRE 480 416 208 416
WIRE 576 416 576 352
WIRE 576 416 480 416
WIRE 848 416 848 352
WIRE 848 416 576 416
WIRE 0 464 0 416
FLAG 0 464 0
FLAG 32 96 in
FLAG 448 96 out+
FLAG 752 192 out-
SYMBOL voltage 0 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 25
SYMBOL PowerProducts\\LT1086-5 208 96 R0
SYMATTR InstName U1
SYMBOL res 368 80 R0
SYMATTR InstName R1
SYMATTR Value 57
SYMBOL res 368 192 R0
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL res 192 288 R0
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL Misc\\battery 848 80 R0
WINDOW 3 -1561 389 Invisible 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 8 0.1 8 0.11 9 0.2 9 0.21 10 0.3 10 0.31 10.5 0.4 10.5 0.41 11 0.5 11 0.51 11.5 0.6 11.5 0.61 12 0.7 12 0.71 12.5 0.8 12.5 0.81 13 0.9 13 0.91 13.5 1 13.5 1.01 14 1.1 14 1.11 14.5 1.2 14.5 1.21 15 1.3 15 1.31 15.5 1.4 15.5 1.41 16 1.5 16 1.51 0 1.6 0 1.61 -12)
SYMBOL res 576 80 R0
SYMATTR InstName R4
SYMATTR Value 470
SYMBOL res 464 176 R0
SYMATTR InstName R5
SYMATTR Value 2.4k
SYMBOL res 464 304 R0
SYMATTR InstName R6
SYMATTR Value 400
SYMBOL npn 512 256 R0
WINDOW 0 24 49 Left 2
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 784 256 R0
SYMATTR InstName Q2
SYMATTR Value FZT849
SYMBOL diode 704 288 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value MURS120
SYMBOL LED 608 240 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -19 120 VTop 2
SYMATTR InstName D2
SYMATTR Value NSPW500BS
SYMATTR Description Diode
SYMATTR Type diode
TEXT 40 440 Left 2 !.tran 2 startup