Version 4 SHEET 1 1252 836 WIRE 512 -240 -64 -240 WIRE -64 -208 -64 -240 WIRE 512 -208 512 -240 WIRE 512 -32 512 -128 WIRE 512 -32 384 -32 WIRE 688 -32 512 -32 WIRE 512 16 512 -32 WIRE 112 80 48 80 WIRE 384 80 384 -32 WIRE 384 80 336 80 WIRE 48 112 48 80 WIRE 112 144 16 144 WIRE 512 144 512 96 WIRE 512 144 336 144 WIRE 608 144 512 144 WIRE 112 208 -128 208 WIRE 448 208 336 208 WIRE 512 208 512 144 WIRE 608 208 608 144 WIRE 112 272 80 272 WIRE 384 272 336 272 WIRE 16 336 16 144 WIRE 448 336 448 208 WIRE 448 336 16 336 WIRE 512 336 512 288 WIRE 512 336 448 336 WIRE 608 336 608 272 WIRE 608 336 512 336 WIRE 384 352 384 272 WIRE 448 352 448 336 WIRE 688 352 688 -32 WIRE -288 416 -288 400 WIRE -288 416 -432 416 WIRE -208 416 -288 416 WIRE -208 432 -208 416 WIRE -480 480 -496 480 WIRE 384 528 384 416 WIRE 448 528 448 416 WIRE 688 528 688 416 WIRE -432 576 -432 496 FLAG 48 112 0 FLAG 384 528 0 FLAG 448 528 0 FLAG 80 272 Vcc FLAG 448 208 A FLAG 688 528 0 FLAG -288 400 Led FLAG 384 -32 Vcc FLAG -208 576 0 FLAG -64 -240 Vers FLAG -368 96 Vers FLAG -432 576 0 FLAG -64 -128 0 FLAG -128 208 V55Out FLAG -496 480 V55Out SYMBOL Misc\\NE555 224 176 R0 SYMATTR InstName U1 SYMBOL voltage -64 -224 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 8V SYMBOL cap 368 352 R0 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL cap 432 352 R0 SYMATTR InstName C2 SYMATTR Value 47n SYMBOL res 496 192 R0 SYMATTR InstName R1 SYMATTR Value 3k3 SYMBOL LED -224 432 R0 SYMATTR InstName D1 SYMATTR Value NSCW100 SYMBOL res 496 0 R0 SYMATTR InstName R3 SYMATTR Value 2k7 SYMBOL diode 592 208 R0 SYMATTR InstName D2 SYMBOL res 496 -224 R0 SYMATTR InstName R4 SYMATTR Value 3k8 SYMBOL cap 672 352 R0 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL res -224 480 R0 SYMATTR InstName R5 SYMATTR Value 40 SYMBOL PowerProducts\\LT3092 -368 208 R0 SYMATTR InstName U2 SYMBOL res -448 304 R0 SYMATTR InstName R6 SYMATTR Value 20 SYMBOL res -304 304 R0 SYMATTR InstName R7 SYMATTR Value 1 SYMBOL nmos -480 400 R0 SYMATTR InstName M1 TEXT -576 632 Left 2 !.tran 30m startup