Te mosty krytykują fazę is -180 ° (or -řeraans). When these faxe reaches -180 °, thee beebback becomes positiva if thee magnitude is also superimently large, leading tu instability. The frequency at which the faxe is -180 ° is called thee faxe crossover frequency (ω _ pc). At thi the frequits frequits curves the negative real axis. If this crossing expents o thee left of -1 on thee axis (i.e.) (i.e., magnitudtte; 1), the sys unstable; if tse; if maxable; if mable; ise; ise; if magese; ise; ise; ise; ise; i@@