Version 4 SHEET 1 880 680 WIRE -336 128 -336 96 WIRE -336 96 -320 96 WIRE -96 256 -128 256 WIRE -128 96 -208 96 WIRE -208 96 -224 96 WIRE 128 128 144 128 WIRE 128 320 144 320 WIRE 128 256 160 256 WIRE 128 192 144 192 WIRE -128 96 -128 128 WIRE -128 128 -96 128 WIRE -208 176 -128 176 WIRE -128 176 -128 192 WIRE -128 192 -96 192 WIRE 384 384 384 400 WIRE 384 224 384 256 WIRE 384 256 480 256 WIRE 384 256 384 288 WIRE -336 336 -336 320 WIRE -336 320 -320 320 WIRE -336 400 -336 416 WIRE 208 560 224 560 WIRE 560 384 560 352 WIRE 560 256 560 272 WIRE 560 464 560 448 WIRE 224 560 416 560 WIRE 80 560 112 560 WIRE 112 560 112 528 WIRE 112 560 128 560 WIRE 224 464 160 464 WIRE 0 560 -32 560 WIRE -32 576 -32 560 WIRE 32 464 64 464 WIRE 224 544 224 560 WIRE -128 368 -128 352 WIRE -128 256 -208 256 WIRE -128 448 -128 464 WIRE -128 464 -112 464 WIRE -144 352 -128 352 WIRE -128 352 -128 256 WIRE 480 464 480 448 WIRE 480 352 480 384 WIRE 432 384 432 560 WIRE 432 384 480 384 WIRE 480 288 480 256 WIRE 480 256 560 256 WIRE 288 336 304 336 WIRE 288 256 304 256 WIRE 304 256 304 336 WIRE 304 336 320 336 WIRE 208 336 192 336 WIRE 192 336 192 256 WIRE 192 256 224 256 WIRE 160 256 192 256 WIRE 384 144 384 128 WIRE 384 128 368 128 WIRE 416 560 432 560 FLAG -336 208 0 FLAG -320 96 Vs FLAG -224 96 Vs FLAG -208 320 0 FLAG 144 128 0 FLAG 144 320 Vs FLAG 160 256 o FLAG 144 192 th FLAG -144 352 th FLAG 384 400 0 FLAG 368 128 Vs FLAG 560 256 p FLAG -336 416 0 FLAG -320 320 Vs FLAG 560 464 0 FLAG 416 560 q FLAG -32 576 0 FLAG -112 464 fb FLAG 32 464 fb FLAG 480 464 0 SYMBOL voltage -336 112 R0 WINDOW 123 0 0 Left 0 WINDOW 39 -29 131 Left 0 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V1 SYMATTR Value 3 SYMBOL res -224 80 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL res -224 160 R0 SYMATTR InstName R2 SYMATTR Value 3.3k SYMBOL cap -224 256 R0 WINDOW 0 36 19 Left 0 WINDOW 3 38 55 Left 0 SYMATTR InstName C2 SYMATTR Value 390p SYMBOL sym_new\\TLC555 16 224 M0 WINDOW 39 -39 170 Center 0 SYMATTR SpiceLine VDD=3V RONX=1.0 SYMATTR InstName U2 SYMBOL npn 320 288 R0 SYMATTR InstName Q2 SYMATTR Value 2N4401 SYMBOL ind 368 128 R0 SYMATTR InstName L1 SYMATTR Value 22u SYMBOL schottky 464 288 R0 WINDOW 3 1 -80 Left 0 SYMATTR InstName D1 SYMATTR Value MBR0520L SYMATTR Description Diode SYMATTR Type diode SYMBOL res 96 576 M270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R7 SYMATTR Value 900 SYMBOL cap 464 448 M180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C5 SYMATTR Value 1e-6 SYMBOL res 224 576 M270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R6 SYMATTR Value 47 SYMBOL cap -352 336 R0 SYMATTR InstName C1 SYMATTR Value 4.7e-6 SYMBOL res 544 256 R0 SYMATTR InstName R4 SYMATTR Value 1k SYMBOL cap 544 384 R0 SYMATTR InstName C4 SYMATTR Value 330p SYMBOL pnp 64 528 R270 WINDOW 0 86 31 VLeft 0 WINDOW 3 87 124 VLeft 0 SYMATTR InstName Q3 SYMATTR Value 2N3906 SYMBOL res 208 560 M180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R5 SYMATTR Value 470 SYMBOL res -144 352 R0 SYMATTR InstName R8 SYMATTR Value 15k SYMBOL res 304 320 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL cap 288 240 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C3 SYMATTR Value 220p TEXT -352 536 Left 0 !.lib ./doclib/timers.lib\n.tran 0 0.52m 0.5m 50n