wˌɛn ɐ dˌiːsˈiː səplˈaɪ vˈoʊltɪdʒ nˈiːdz təbi dʒˈɛnɚɹˌeɪɾᵻd fɹʌm wˈʌn əvə nˈʌmbɚɹ ʌv dˈɪfɹənt sˈoːɹsᵻz, fɔːɹ ɛɡzˈæmpəl wɛn tˈɜːmᵻnˌeɪɾɪŋ ɐ pˈæɹəlˌɛl skˈʌzi bˈʌs, ɐ vˈɛɹi sˈɪmpəl sˈɜːkɪt lˈaɪk ðɪs kæn biː jˈuːzd:
When a DC supply voltage needs to be generated from one of a number of different sources, for example when terminating a parallel SCSI bus, a very simple circuit like this can be used: