initial commit

examples/Educational/FRA/Eg2.asc

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+TEXT 1672 192 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
+TEXT 1680 560 Left 2 ;Loop crossover frequency: 125KHz\nPhase Margin: 92<39>
+TEXT 1664 32 Left 2 !.param Freq=125K ; iterate to 0dB gain or use the .step statement below\n.step oct param freq 50K 200K 5\n.save V(a) V(b)  I(L1)\n.option plotwinsize=0 numdgt=15
+TEXT 1672 472 Left 2 !.param t0=.2m\n.tran 0 {t0+25/freq} {t0}