Version 4 SHEET 1 3092 680 WIRE 1584 -1200 1520 -1200 WIRE 1728 -1200 1664 -1200 WIRE 1520 -1072 1520 -1200 WIRE 1520 -1072 1152 -1072 WIRE 1584 -1072 1520 -1072 WIRE 1728 -1072 1728 -1200 WIRE 1728 -1072 1648 -1072 WIRE 2048 -1072 1728 -1072 WIRE 592 -784 592 -912 WIRE 736 -784 736 -912 WIRE 816 -784 736 -784 WIRE 1792 -784 816 -784 WIRE 1792 -656 1792 -784 WIRE 1792 -656 1712 -656 WIRE 1648 -608 1584 -608 WIRE 592 -592 592 -704 WIRE 1792 -560 1712 -560 WIRE 736 -528 736 -784 WIRE 816 -528 816 -784 WIRE 1152 -528 1152 -1072 WIRE 1152 -528 1008 -528 WIRE 1008 -496 1008 -528 WIRE 1248 -432 1248 -464 WIRE 1152 -416 1152 -528 WIRE 1216 -416 1152 -416 WIRE 736 -400 736 -448 WIRE 816 -400 816 -464 WIRE 816 -400 736 -400 WIRE 1008 -400 1008 -416 WIRE 1008 -400 816 -400 WIRE 1584 -400 1584 -608 WIRE 1584 -400 1280 -400 WIRE 1664 -400 1584 -400 WIRE 1792 -400 1792 -560 WIRE 1792 -400 1744 -400 WIRE 1856 -400 1792 -400 WIRE 2048 -400 2048 -1072 WIRE 2048 -400 1856 -400 WIRE 1008 -384 1008 -400 WIRE 1216 -384 1152 -384 WIRE 1248 -336 1248 -368 WIRE 736 -320 736 -400 WIRE 1376 -320 1344 -320 WIRE 1504 -320 1456 -320 WIRE 816 -304 816 -400 WIRE 1504 -272 1504 -320 WIRE 1792 -272 1792 -400 WIRE 1792 -272 1504 -272 WIRE 1792 -240 1792 -272 WIRE 1792 -240 1712 -240 WIRE 1008 -224 1008 -304 WIRE 1152 -224 1152 -384 WIRE 1152 -224 1008 -224 WIRE 1344 -224 1344 -320 WIRE 1344 -224 1152 -224 WIRE 1392 -224 1344 -224 WIRE 1504 -224 1504 -272 WIRE 1504 -224 1456 -224 WIRE 1584 -192 1584 -400 WIRE 1648 -192 1584 -192 WIRE 736 -176 736 -240 WIRE 816 -176 816 -240 WIRE 816 -176 736 -176 WIRE 1792 -144 1712 -144 WIRE 1792 -64 1792 -144 WIRE 736 -48 736 -176 FLAG 592 -592 0 FLAG 592 -912 VCC FLAG 1792 -64 0 FLAG 736 -912 VCC FLAG 736 -48 0 FLAG 1248 -464 VCC FLAG 1248 -336 0 FLAG 1856 -400 out SYMBOL res 1760 -416 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 100 SYMBOL res 1024 -400 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 15 SYMBOL cap 832 -464 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C2 SYMATTR Value 1µF SYMBOL voltage 592 -800 R0 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 2 WINDOW 39 60 56 VTop 2 SYMATTR InstName V1 SYMATTR Value 22V SYMATTR SpiceLine Rser=100m SYMBOL res 1024 -288 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R11 SYMATTR Value 1.5K SYMBOL cap 832 -240 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C6 SYMATTR Value 1µF SYMBOL res 752 -432 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R12 SYMATTR Value 100K SYMBOL res 752 -224 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R13 SYMATTR Value 100K SYMBOL res 1472 -336 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 270K SYMBOL cap 1456 -240 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 100nF SYMBOL npn 1648 -656 R0 SYMATTR InstName Q1 SYMBOL pnp 1648 -144 M180 SYMATTR InstName Q2 SYMBOL cap 1648 -1088 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 8nF SYMBOL res 1680 -1216 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL Opamps/opamp2 1248 -464 R0 SYMATTR InstName U2 SYMATTR Value LM7321 TEXT 800 -1192 Left 2 !.tran 10m startup TEXT 808 -1136 Left 2 !.inc LM7321.MOD TEXT 1408 -968 Left 6 ;PIEZO-LAST