sˌuːpɚvˈɪsɚɹi sˈɜːkɪts ɑːɹ ᵻlɛktɹˈɑːnɪk sˈɜːkɪts ðæt mˈɑːnɪɾɚ wˈʌn ɔːɹ mˈoːɹ pɚɹˈæmɪɾɚz ʌv sˈɪstəmz sˈʌtʃ ɐz pˈaʊɚ səplˈaɪz ænd mˌaɪkɹoʊpɹˈɑːsɛsɚz wˌɪtʃ mˈʌst biː meɪntˈeɪnd wɪðˌɪn sˈɜːʔn̩ lˈɪmɪts, ænd tˈeɪk ɐpɹˈoʊpɹɪət ˈækʃən ɪf ɐ pɚɹˈæmɪɾɚ ɡoʊz ˌaʊɾəv bˈaʊndz, kɹiːˈeɪɾɪŋ ɐn ʌnɐksˈɛptəbəl ɔːɹ dˈeɪndʒɚɹəs sˌɪtʃuːˈeɪʃən.
Supervisory circuits are electronic circuits that monitor one or more parameters of systems such as power supplies and microprocessors which must be maintained within certain limits, and take appropriate action if a parameter goes out of bounds, creating an unacceptable or dangerous situation.