First, the non-linear devices are simulated assuming perfect supply voltages and the currents drawn by the devices are measured.
fˈɜːst, ðə nˈɑːnlˈɪnɪɹ dɪvˈaɪsᵻz ɑːɹ sˈɪmjʊlˌeɪɾᵻd ɐsˈuːmɪŋ pˈɜːfɛkt səplˈaɪ vˈoʊltɪdʒᵻz ænd ðə kˈɜːɹənts dɹˈɔːn baɪ ðə dɪvˈaɪsᵻz ɑːɹ mˈɛʒɚd.