Version 4 SHEET 1 2344 1936 WIRE 400 1152 192 1152 WIRE 576 1152 400 1152 WIRE 400 1168 400 1152 WIRE 576 1168 576 1152 WIRE 192 1184 192 1152 WIRE 400 1264 400 1248 WIRE 400 1264 272 1264 WIRE 448 1264 400 1264 WIRE 576 1264 576 1248 WIRE 272 1280 272 1264 WIRE 400 1312 400 1264 WIRE 80 1360 16 1360 WIRE 192 1360 192 1264 WIRE 192 1360 144 1360 WIRE 272 1360 272 1344 WIRE 272 1360 192 1360 WIRE 336 1360 272 1360 WIRE 16 1392 16 1360 WIRE 192 1392 192 1360 WIRE 400 1424 400 1408 WIRE 480 1424 400 1424 WIRE 400 1440 400 1424 WIRE 480 1456 480 1424 WIRE 16 1520 16 1472 WIRE 192 1520 192 1472 WIRE 400 1536 400 1520 WIRE 480 1536 480 1520 FLAG 16 1520 0 FLAG 16 1360 IN FLAG 192 1520 0 FLAG 400 1536 0 FLAG 448 1264 OUT FLAG 576 1264 0 FLAG 480 1536 0 SYMBOL npn 336 1312 R0 SYMATTR InstName Q1 SYMATTR Value 2N3904 SYMBOL res 384 1424 R0 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL voltage 16 1376 R0 WINDOW 123 24 105 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V3 SYMATTR Value "" SYMBOL res 176 1488 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL cap 144 1344 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL res 176 1280 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R2 SYMATTR Value 100K SYMBOL voltage 576 1152 R0 SYMATTR InstName V1 SYMATTR Value 9 SYMBOL cap 464 1456 R0 SYMATTR InstName C2 SYMATTR Value 20µ SYMBOL res 384 1152 R0 SYMATTR InstName R4 SYMATTR Value 20K SYMBOL cap 256 1344 M180 WINDOW 0 28 52 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C3 SYMATTR Value 100p TEXT 560 1392 Left 2 !.ac oct 10 1 10Meg TEXT 424 1632 Top 1 ;This example schematic is supplied for informational/educational purposes only. TEXT -48 1584 Left 2 !.measure tmp max mag(V(out))\n.measure BW trig mag(V(out))=tmp/sqrt(2) rise=1 targ mag(V(out))=tmp/sqrt(2) fall=last TEXT -72 1088 Left 2 ;Example of using a .measure script to measure the 3dB bandwidth of a response.\nExecute View=>SPICE Error Log after running the simulation to see the output of the\n.measure statements.