ɪn sˈʌtʃ kˈeɪsᵻz, vˈoʊltɪdʒ kənvˈɜːɾɚz nˈiːd ˈoʊnli biː spˈɛsᵻfˌaɪd tə kənvˈɜːt ˌɛni vˈoʊltɪdʒ wɪðˌɪn wˈʌn ɹˈeɪndʒ, tʊ ɐ vˈoʊltɪdʒ wɪðˌɪn ðɪ ˈʌðɚ, ɹˈæðɚ ðɐn sˈɛpɹət kənvˈɜːɾɚz bˌiːɪŋ nˈiːdᵻd fɔːɹ ˈɔːl pˈɑːsᵻbəl pˈɛɹz ʌv nˈɑːmɪnəl vˈoʊltɪdʒᵻz wˈʌnhˈʌndɹɪd tˈɛn tˈuːhˈʌndɹɪd twˈɛnti, wˈʌnhˈʌndɹɪd sˈɛvəntˌiːn tˈuːhˈʌndɹɪd twˈɛnti, wˈʌnhˈʌndɹɪd tˈɛn tˈuːhˈʌndɹɪd θˈɜːɾi, ɛtsˈɛtɹə.
In such cases, voltage converters need only be specified to convert any voltage within one range, to a voltage within the other, rather than separate converters being needed for all possible pairs of nominal voltages (110–220, 117–220, 110–230, etc.)