Isifinyezo:

Kumasekhethi, ama-resistors ayingxenye ebalulekile engakhawulela ukuhamba kwamanje futhi iguqule amandla kagesi abe amandla ashisayo. Lapho ama-voltage angu-380V kanye no-220V exhunywe kuzo zombili iziphetho ze-resistor, kuzoba khona umehluko obalulekile. Lesi sihloko sizohlaziya lo mehluko ezicini ezintathu: umehluko we-voltage, ukulahleka kwamandla, nokuphepha.

isingeniso:

Ngokuqhubeka okuqhubekayo kwezobuchwepheshe kanye nokuthuthuka okusheshayo komphakathi, ukunikezwa kwamandla kuye kwaduma kuwo wonke amagumbi. Izinga lamandla kagesi nalo liyahlukahluka, okuvame kakhulu ukuthi ngu-380V no-220V. Uyini umehluko ekusebenzeni kwe-resistor njengengxenye ye-elekthronikhi eyisisekelo kusekethe ngaphansi kwezimo ezimbili zamandla kagesi?

1. Umehluko wamandla kagesi:

I-Voltage isho umehluko ongaba khona, olinganiswa ngamavolthi (V). I-380V kanye ne-220V ngokulandelanayo imelela izinga le-voltage yokunikezwa kwamandla, okusho ukuthi umehluko we-voltage phakathi kwamaphethelo amabili e-resistor nawo uhlukile kuzo zombili izimo. Ngokomthetho ka-Ohm, ubuhlobo phakathi kwe-voltage ne-current i-U=IR, lapho u-U eyi-voltage, mina eyamanje, futhi u-R ukumelana. Kungabonakala ukuthi ngaphansi kokumelana okufanayo, uma kuxhunywe kugesi we-380V, okwamanje kuzoba mkhulu kunalapho kuxhunywe ku-220V amandla kagesi, ngoba umehluko we-voltage udala ushintsho lwamanje. Ngakho-ke, lapho ibhendi yokumelana ixhunywe kugesi ngama-voltage ahlukene emikhawulweni yomibili, kuzoba nomehluko kubukhulu bamanje.

2. Ukulahleka kwamandla:

Amandla ipharamitha ebalulekile kuyisekethe, emele izinga lokuguqulwa kwamandla ngeyunithi ngayinye yesikhathi, elinganiswa ngama-watts (W). Ngokusho kwefomula yamandla engu-P=IV, lapho u-P engamandla, mina ngikhona, kanti u-V uyi-voltage, kunganqunywa ukuthi amandla ahlobene nomkhiqizo wamanje kanye ne-voltage. Ngakho-ke, lapho imithombo yamandla ehlukene ixhunywe kuzo zombili iziphetho zesiphikisa, ukulahleka kwamandla nakho kuzohluka. Uma uxhunywe kugesi we-380V, ngenxa yamanje ephezulu, ukulahlekelwa kwamandla kuzokwanda ngokufanele; Uma uxhuma kugesi we-220V, ngenxa yamanje encane, ukulahlekelwa kwamandla kuncane uma kuqhathaniswa.

3, Ukuphepha:

Ukuphepha kuwukukhathazeka okukhethekile lapho usebenzisa amasekhethi. Lapho ukunikezwa kwamandla okungu-380V kuxhunywe kuzo zombili iziphetho ze-resistor, ukulimala emzimbeni womuntu kuyanda ngenxa yamanje ephezulu. Izingozi zokushaqeka kukagesi zingadala ukulimala okubi kakhulu noma izimo ezisongela ukuphila. Ngakho-ke, lapho uxhumeka kugesi we-voltage ephezulu, izinyathelo zokuphepha ezihambisanayo kufanele zithathwe, njengedizayini yesekethe enengqondo, ukuvikelwa kwe-insulation, njll. Uma uxhumeka kugesi we-220V, ngenxa yamanje encane uma kuqhathaniswa, ukuphepha kuphezulu uma kuqhathaniswa. .

Isifinyezo:

Njengengxenye eyisisekelo kusekethe, izinqamuleli zingase zibe nomehluko othile lapho zixhunywe kumithombo yamandla engu-380V no-220V kuzo zombili iziphetho. Uma uxhumeka kugesi we-380V, i-current iphezulu, ukulahlekelwa kwamandla kuphezulu, futhi ingozi yokuphepha iyanda ngokuqhathaniswa; Uma ixhunywe kugesi we-220V, okwamanje incane uma kuqhathaniswa, ukulahlekelwa kwamandla kuncane, futhi ukuphepha kuphezulu uma kuqhathaniswa. Ngakho-ke, lapho uklama ama-circuits, kuyadingeka ukukhetha amazinga kagesi ahlukene ngokwezidingo zangempela futhi uthathe izinyathelo zokuphepha ezihambisanayo ngesikhathi sokusetshenziswa kwangempela ukuqinisekisa ukusebenza okujwayelekile kwesekethe nokuphepha komuntu siqu.

Qaphela: Le ndatshana ingeyereferensi kuphela, futhi izimo ezithile zidinga ukwahlulelwa futhi zisingathwe ngokusekelwe ezidingweni zangempela kanye nomklamo othile wesekethe.