Version 4 SHEET 1 940 680 WIRE 240 -128 -176 -128 WIRE 336 -128 240 -128 WIRE 592 -128 336 -128 WIRE 272 -96 -96 -96 WIRE 336 -96 336 -128 WIRE -96 -48 -96 -96 WIRE 16 -48 -96 -48 WIRE 128 -48 96 -48 WIRE 192 -48 128 -48 WIRE 272 -48 272 -96 WIRE 336 16 336 -16 WIRE 336 16 272 16 WIRE 128 32 128 -48 WIRE 128 32 -80 32 WIRE 592 32 592 -128 WIRE 672 32 592 32 WIRE 672 48 672 32 WIRE -64 96 -256 96 WIRE 240 96 240 -128 WIRE 240 96 160 96 WIRE 336 96 256 96 WIRE 592 96 592 32 WIRE 592 96 560 96 WIRE -176 144 -176 -128 WIRE -80 160 -80 32 WIRE -64 160 -80 160 WIRE 272 160 272 16 WIRE 336 160 272 160 WIRE 608 160 560 160 WIRE 672 160 672 128 WIRE 672 160 608 160 WIRE -96 224 -96 -48 WIRE -64 224 -96 224 WIRE 192 224 192 -48 WIRE 192 224 160 224 WIRE 336 224 304 224 WIRE 608 224 608 160 WIRE 608 224 560 224 WIRE 752 240 672 240 WIRE 752 272 752 240 WIRE -64 288 -96 288 WIRE 240 288 240 96 WIRE 336 288 240 288 WIRE 672 288 672 240 WIRE 672 288 560 288 WIRE 608 304 608 224 WIRE -96 336 -96 288 WIRE 240 336 240 288 WIRE 240 336 -96 336 WIRE 192 352 192 224 WIRE 304 400 304 224 WIRE 864 400 304 400 WIRE -256 432 -256 96 WIRE -176 432 -176 224 WIRE -176 432 -256 432 WIRE -32 432 -176 432 WIRE 192 432 192 416 WIRE 192 432 -32 432 WIRE 256 432 256 96 WIRE 256 432 192 432 WIRE 608 432 608 368 WIRE 608 432 256 432 WIRE 752 432 752 352 WIRE 752 432 608 432 FLAG -32 432 0 SYMBOL 1JPS\ ITEMS\\NE555 48 192 R0 SYMATTR InstName U1 SYMBOL 1JPS\ ITEMS\\NE555 448 192 R0 SYMATTR InstName U2 SYMBOL Misc\\battery -176 128 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 112 -64 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 15K SYMBOL cap 208 352 M0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL cap 592 304 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL cap 256 -48 R0 WINDOW 0 4 -58 Left 2 WINDOW 3 -3 -29 Left 2 SYMATTR InstName C3 SYMATTR Value .01µ SYMBOL res 320 -112 R0 SYMATTR InstName R2 SYMATTR Value 10K SYMBOL res 656 32 R0 SYMATTR InstName R3 SYMATTR Value 20K SYMBOL voltage 752 256 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PWL(0 0 1 8) TEXT -258 442 Left 2 !.tran 1 TEXT 8 184 Left 2 ;48KHz TEXT 408 192 Left 2 ;2.2ms TEXT 384 344 Left 2 ;36us - 2.2ms