Electromagnet Txoj Cai

Thaum cov tub ntxhais hlau tau muab tso rau hauv ib qho tam sim no - nqa solenoid, cov tub ntxhais yog magnetized los ntawm solenoid lub magnetic teb. Cov tub ntxhais hlau nplaum ces dhau los ua cov hlau nplaum nws tus kheej. Vim hais tias ob lub teb sib nqus superimpose, lub solenoid cov hlau nplaum yog qhov zoo heev. Txhawm rau ua kom cov hlau nplaum electromagnet muaj zog dua, cov tub ntxhais hlau feem ntau yog ua rau hauv cov duab horseshoe. Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias cov coils ntawm tus nees nees - zoo li tus tub ntxhais raug mob nyob rau hauv cov lus qhia tsis sib xws; ib sab yog clockwise, thiab lwm yam yuav tsum tau counterclockwise. Yog tias cov lus qhia winding zoo ib yam, cov hlau nplaum ntawm cov tub ntxhais los ntawm ob lub coils yuav tshem tawm ib leeg, ua rau cov tub ntxhais tsis yog - hlau nplaum. Tsis tas li ntawd, electromagnet lub hauv paus yog ua los ntawm cov hlau mos, tsis yog hlau. Txwv tsis pub, ib zaug hlau yog hlau nplaum, nws yuav khaws nws cov hlau nplaum ntev ntev thiab tsis tuaj yeem demagnetized. Yog li ntawd, lub zog ntawm nws cov hlau nplaum tsis tuaj yeem tswj tau los ntawm qhov loj ntawm qhov tam sim no, thiab electromagnet poob nws qhov txiaj ntsig zoo.

Electromagnet yog ib qho khoom siv uas tuaj yeem tsim lub zog sib nqus los ntawm kev hla cov hluav taws xob los ntawm nws. Nws yog ib qho uas tsis yog- cov hlau nplaum tas mus li, thiab nws cov hlau nplaum tuaj yeem qhib tau yooj yim lossis tsis ua haujlwm. Piv txwv li, cov cranes loj siv electromagnets nqa cov tsheb uas tso tseg.

Thaum tam sim no dhau los ntawm tus neeg xyuas pib, qhov chaw sib nqus yog tsim nyob ib ncig ntawm tus neeg xyuas pib. Siv cov cuab yeej no, thaum hluav taws xob tam sim no dhau los ntawm solenoid, ib qho chaw sib nqus sib nqus yog tsim nyob rau hauv lub solenoid. Yog tias cov khoom siv ferromagnetic muab tso rau hauv nruab nrab ntawm lub solenoid, cov khoom no yuav raug hlau nplaum, ua kom muaj zog ntawm cov hlau nplaum.

Feem ntau, cov hlau nplaum uas tsim los ntawm electromagnet muaj feem xyuam rau qhov loj ntawm qhov tam sim no, tus naj npawb ntawm cov lem hauv lub kauj, thiab cov khoom siv hauv nruab nrab ferromagnetic. Thaum tsim cov khoom siv hluav taws xob, kev saib xyuas yog them rau kev faib cov coils thiab xaiv cov khoom siv ferromagnetic, thiab qhov loj ntawm qhov tam sim no yog siv los tswj cov magnetic teb. Vim hais tias cov khoom siv coil muaj qhov tsis kam, qhov no txwv qhov loj ntawm cov hlau nplaum uas lub electromagnet tuaj yeem tsim tau, tab sis nrog kev tshawb pom thiab kev siv cov superconductors, nws yuav muaj peev xwm kov yeej cov kev txwv no.