Version 4 SHEET 1 880 928 WIRE -1008 -336 -1088 -336 WIRE -1088 -304 -1088 -336 WIRE -1008 -288 -1008 -336 WIRE -1488 -208 -1520 -208 WIRE -1232 -208 -1408 -208 WIRE -1136 -208 -1232 -208 WIRE -384 -192 -752 -192 WIRE -1520 -176 -1520 -208 WIRE -1232 -112 -1232 -208 WIRE -1136 -112 -1136 -208 WIRE -848 -80 -896 -80 WIRE -752 -80 -752 -192 WIRE -752 -80 -784 -80 WIRE -720 -80 -752 -80 WIRE -464 -16 -832 -16 WIRE -1520 0 -1600 0 WIRE -1376 0 -1456 0 WIRE -1328 0 -1376 0 WIRE -1232 0 -1232 -32 WIRE -1232 0 -1248 0 WIRE -1088 0 -1232 0 WIRE -1008 0 -1008 -208 WIRE -1136 16 -1136 -32 WIRE -1040 16 -1136 16 WIRE -1600 32 -1600 0 WIRE -896 32 -896 -80 WIRE -896 32 -976 32 WIRE -832 32 -832 -16 WIRE -832 32 -896 32 WIRE -784 32 -832 32 WIRE -1376 48 -1376 0 WIRE -1088 48 -1088 0 WIRE -1040 48 -1088 48 WIRE -1136 64 -1136 16 WIRE -528 96 -608 96 WIRE -608 112 -608 96 WIRE -528 128 -528 96 WIRE -1600 160 -1600 112 WIRE -1376 160 -1376 128 WIRE -1376 160 -1600 160 WIRE -1136 160 -1136 144 WIRE -1136 160 -1376 160 WIRE -1008 160 -1008 64 WIRE -1008 160 -1024 160 WIRE -1136 176 -1136 160 WIRE -1024 192 -1024 160 WIRE -704 192 -832 192 WIRE -832 224 -832 192 WIRE -704 240 -704 192 WIRE -384 240 -384 -192 WIRE -336 240 -384 240 WIRE -336 256 -432 256 WIRE 160 288 -272 288 WIRE -832 336 -832 304 WIRE -608 336 -608 192 WIRE -704 352 -704 320 WIRE -640 352 -704 352 WIRE -432 368 -432 256 WIRE -432 368 -576 368 WIRE -1104 384 -1136 384 WIRE -992 384 -1024 384 WIRE -640 384 -992 384 WIRE -992 416 -992 384 WIRE -464 416 -464 -16 WIRE -336 416 -464 416 WIRE -1136 432 -1136 384 WIRE -432 432 -432 368 WIRE -336 432 -432 432 WIRE -704 448 -704 352 WIRE 160 464 -272 464 WIRE -1136 560 -1136 512 WIRE -992 560 -992 480 WIRE -992 560 -1136 560 WIRE -848 560 -992 560 WIRE -704 560 -704 528 WIRE -704 560 -848 560 WIRE -608 560 -608 400 WIRE -608 560 -704 560 WIRE -848 608 -848 560 FLAG -1024 192 0 FLAG -784 32 POS IOPIN -784 32 Out FLAG -1136 176 0 FLAG -720 -80 NEG IOPIN -720 -80 Out FLAG -1520 -176 0 FLAG -1088 -304 0 FLAG -848 608 0 FLAG -832 336 0 FLAG -528 128 0 FLAG 160 288 PWM1 IOPIN 160 288 Out FLAG 160 464 PWM2 IOPIN 160 464 Out DATAFLAG -736 -80 "" DATAFLAG -736 -80 "" DATAFLAG -736 -80 "" SYMBOL voltage -1600 16 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 44 Left 2 WINDOW 3 24 96 Invisible 2 SYMATTR SpiceLine Rser=100m SYMATTR Value SINE(0 7 33) SYMATTR InstName V1 SYMBOL res -1392 32 R0 SYMATTR InstName R1 SYMATTR Value 91K SYMBOL res -1232 -16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 5K SYMBOL res -1248 -128 R0 WINDOW 3 36 76 Invisible 2 SYMATTR Value 1000000 SYMATTR InstName R3 SYMBOL res -1152 -128 R0 WINDOW 3 36 76 Invisible 2 SYMATTR Value 10000000 SYMATTR InstName R4 SYMBOL res -1152 48 R0 SYMATTR InstName R5 SYMATTR Value 510K SYMBOL Digital\\inv -848 -144 R0 WINDOW 39 13 96 Left 2 WINDOW 40 -16 115 Left 2 SYMATTR SpiceLine Vhigh=vhigh SYMATTR SpiceLine2 tau=tau tripdt=tdt td=td SYMATTR InstName A1 SYMBOL Comparators\\LT1018 -1008 32 R0 SYMATTR InstName U1 SYMBOL voltage -1392 -208 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 0 WINDOW 39 -4 56 VBottom 2 SYMATTR InstName V2 SYMATTR Value 1.5 SYMATTR SpiceLine Rser=100m SYMBOL Misc\\xtal -1456 -16 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 30 35 VTop 2 SYMATTR InstName C1 SYMATTR Value 0.00048 SYMBOL voltage -1008 -192 R180 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 0 WINDOW 39 -60 56 VBottom 2 SYMATTR InstName V3 SYMATTR Value 1.5 SYMATTR SpiceLine Rser=100m SYMBOL res -1008 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 460K SYMBOL res -720 432 R0 SYMATTR InstName R7 SYMATTR Value 2000000 SYMBOL res -720 224 R0 WINDOW 3 47 70 Left 2 SYMATTR Value 2000000 SYMATTR InstName R8 SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL cap -1008 416 R0 SYMATTR InstName C2 SYMATTR Value 7p SYMBOL Digital\\and -304 208 R0 WINDOW 39 -33 117 Left 2 WINDOW 40 -29 136 Left 2 SYMATTR SpiceLine Vhigh=vhigh SYMATTR SpiceLine2 tau=tau tripdt=tdt td=td SYMATTR InstName A2 SYMBOL voltage -1136 416 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 44 Left 2 WINDOW 3 24 96 Invisible 2 SYMATTR SpiceLine Rser=100m SYMATTR Value PULSE(0 1.5 0 100n 100n 0.0220m 0.0305m) SYMATTR InstName V4 SYMBOL voltage -832 208 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=100m SYMATTR InstName V5 SYMATTR Value 1.5 SYMBOL voltage -608 208 R180 WINDOW 0 24 96 Left 2 WINDOW 3 24 16 Left 2 WINDOW 123 0 0 Left 0 WINDOW 39 24 -12 Left 2 SYMATTR InstName V6 SYMATTR Value 1.5 SYMATTR SpiceLine Rser=100m SYMBOL Comparators\\LT1018 -608 368 R0 SYMATTR InstName U2 SYMBOL Digital\\and -304 384 R0 WINDOW 39 -29 126 Left 2 WINDOW 40 -29 151 Left 2 SYMATTR SpiceLine Vhigh=vhigh SYMATTR SpiceLine2 tau=tau tripdt=tdt td=td SYMATTR InstName A3 TEXT -760 912 Left 2 !.tran 0 1 0 500m startup step TEXT -1616 216 Left 2 !;tran 0 1000m 0 TEXT -1624 -80 Left 2 ;piezosensor TEXT -1712 296 Left 2 !;tran 0 600m 0 TEXT -976 696 Left 2 !;tran 0 3000m 0 TEXT -632 672 Left 2 !.param tau=20n\n.param tdt=5n\n.param td=1n\n.param vhigh=1.5 RECTANGLE Normal -1392 288 -1712 -144 2