LEADER 00773nam0-22002891i-450 001 990001758040403321 005 20190529131354.0 035 $a000175804 035 $aFED01000175804 035 $a(Aleph)000175804FED01 035 $a000175804 100 $a20030910d1943----km-y0itay50------ba 101 0 $afre 102 $aFR 200 1 $a<>etude du sol et sa necessite au Congo Belge$fJ. Livens 210 $aGembloux$cINEAC$d1943 215 $a50 p.$d24 cm 610 0 $aSuolo 676 $a631.4 700 1$aLivens,$bJ.$0356044 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aLG 912 $a990001758040403321 952 $a60 OP. 43/12$b33838$fFAGBC 959 $aFAGBC 996 $aEtude du sol et sa necessite au Congo Belge$9362845 997 $aUNINA LEADER 02135nam 2200373 450 001 9910136434303321 005 20231206214113.0 010 $a1-5044-0346-0 024 7 $a10.1109/IEEESTD.1982.7419192 035 $a(CKB)3710000000601305 035 $a(NjHacI)993710000000601305 035 $a(EXLCZ)993710000000601305 100 $a20231206d1982 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aANSI/IEEE Std 449-1984 $eIEEE Standard for Ferroresonant Voltage Regulators /$fInstitute of Electrical and Electronics Engineers 210 1$aNew York, N.Y. :$cIEEE,$d1982. 215 $a1 online resource (26 pages) $cillustrations 330 $aThis standard pertains to ferroresonant voltage regulators which operate at relatively constant frequencies and provide substantially constant output voltages in spite of relatively large changes of input voltage, and to controlled ferroresonant regulators which maintain substantially constant output voltages regardless of variations, within limits, of input voltage, temperature, frequency, and output load. Guides to application and test procedures are included. Provision is made for relating the characteristics of ferroresonant regulators to associated rectifiers and circuits. Definitions pertaining to ferroresonance and ferroresonant regulators which have not been found elsewhere are included with an appropriate discussion. This standard includes, but is not limited to, the following types of ferroresonant regulators: (1) Series ferroresonant regulators (2) Series-parallel ferroresonant regulators (electrically connected) (3) Ferroresonant transformer regulators (magnetically coupled) (4) Controlled ferroresonant regulators. 517 $aANSI/IEEE Std 449-1984 606 $aVoltage regulators 606 $aTransistors 615 0$aVoltage regulators. 615 0$aTransistors. 676 $a621.3815 801 0$bNjHacI 801 1$bNjHacl 906 $aDOCUMENT 912 $a9910136434303321 996 $aANSI$92072434 997 $aUNINA