60 lines
2.2 KiB
Plaintext
60 lines
2.2 KiB
Plaintext
Version 4
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SHEET 1 4156 1252
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WIRE 1424 544 1392 544
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WIRE 1520 544 1504 544
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WIRE 1696 544 1520 544
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WIRE 1856 544 1776 544
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WIRE 1936 576 1936 560
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WIRE 2032 576 2032 560
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WIRE 1520 640 1520 544
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WIRE 1552 640 1520 640
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WIRE 1584 640 1552 640
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WIRE 1696 640 1664 640
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WIRE 1760 640 1696 640
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WIRE 1856 656 1856 544
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WIRE 1856 656 1824 656
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WIRE 1760 672 1744 672
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WIRE 1936 672 1936 656
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WIRE 2032 672 2032 656
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FLAG 1552 640 A
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FLAG 1696 640 B
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FLAG 1936 672 0
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FLAG 2032 672 0
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FLAG 1936 560 +V
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FLAG 1792 624 +V
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FLAG 2032 560 -V
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FLAG 1792 688 -V
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FLAG 1744 672 0
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FLAG 1392 544 0
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SYMBOL VOLTAGE 1568 640 M90
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WINDOW 0 -32 56 VBottom 2
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WINDOW 3 32 56 VTop 2
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SYMATTR InstName V3
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SYMATTR Value SINE(0 10m {Freq})
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SYMATTR Value2 ac 1
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SYMBOL Opamps\\UniversalOpamp2 1792 656 R0
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SYMATTR InstName U1
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SYMBOL voltage 1936 560 R0
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SYMATTR InstName V1
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SYMATTR Value 5
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SYMBOL voltage 2032 560 R0
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SYMATTR InstName V2
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SYMATTR Value -5
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SYMBOL res 1792 528 R90
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WINDOW 0 0 56 VBottom 2
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WINDOW 3 32 56 VTop 2
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SYMATTR InstName R1
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SYMATTR Value 10K
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SYMBOL res 1520 528 R90
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WINDOW 0 0 56 VBottom 2
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WINDOW 3 32 56 VTop 2
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SYMATTR InstName R2
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SYMATTR Value 1K
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TEXT 2200 560 Left 2 !.tran 0 {5/Freq+.1m} .1m\n.step oct param Freq .1 10Meg 3
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TEXT 1504 752 Left 2 !.measure Aavg avg V(a)\n.measure Bavg avg V(b)\n.measure Are avg (V(a)-Aavg)*cos(360*time*Freq)\n.measure Aim avg -(V(a)-Aavg)*sin(360*time*Freq)\n.measure Bre avg (V(b)-Bavg)*cos(360*time*Freq)\n.measure Bim avg -(V(b)-Bavg)*sin(360*time*Freq)\n.measure GainMag param 20*log10(hypot(Are,Aim) / hypot(Bre,Bim))\n.measure GainPhi param mod(atan2(Aim, Are) - atan2(Bim, Bre)+180,360)-180
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TEXT 2200 448 Left 2 !.save V(a) V(b)\n.option nomarch\n.option plotwinsize=0 numdgt=15
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TEXT 2200 648 Left 2 ;.ac oct 10 .1 10Meg\n.param freq=0
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TEXT 1856 248 Center 2 ;This example shows the basic principle of extracting\nthe small signal AC characteristics from time domain simulation.\n \nAfter running the simulation, execute menu command\nView=>SPICE Error Log. Then right click and select\n"Plot .step'ed .meas data". Press "yes" to the dialog\nasking if it should combine the data to complex numbers.
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TEXT 2200 784 Left 2 ;To use this technique in your\nown simulations, include these\n.measure statements
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RECTANGLE Normal 2608 976 1488 720 2
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