Taw qhia
Cov hlau nplaum yog ib yam khoom uas ntxim nyiam tshaj plaws hauv ntiaj teb, thiab lawv tau siv ntau yam kev siv xws li hluav taws xob motors mus rau cov khoom siv kho mob. Muaj ob hom hlau nplaum: cov hlau nplaum tawv thiab cov hlau nplaum mos. Cov hlau nplaum tawv yog tus cwj pwm los ntawm lawv cov hlau nplaum muaj zog, thaum cov hlau nplaum mos muaj cov hlau nplaum tsis muaj zog. Hauv tsab xov xwm no, peb yuav tham txog dab tsi cov hlau nplaum mos yog thiab muab piv txwv ntawm cov hlau nplaum mos.
Soft Magnet yog dab tsi?
Cov hlau nplaum mos yog cov khoom sib nqus uas yooj yim hlau nplaum thiab demagnetized. Nws muaj qhov coercivity tsawg, uas txhais tau hais tias nws yuav tsum tau siv zog tsawg dua los ua kom nws sib nqus thiab hloov nws txoj kev sib nqus. Cov hlau nplaum mos yog siv rau hauv cov ntawv thov uas yuav tsum tau hloov ceev ntawm cov hlau nplaum.
Cov hlau nplaum mos tseem hu ua cov hlau nplaum ib ntus vim tias lawv poob lawv cov hlau nplaum tom qab tshem tawm cov hlau nplaum sab nraud. Cov cuab yeej no ua rau lawv zoo tagnrho rau cov ntawv thov uas qhov chaw sib nqus yuav tsum tau hloov tsis tu ncua.
Cov hlau nplaum mos tuaj yeem ua los ntawm cov khoom sib txawv, suav nrog hlau, npib tsib xee, thiab cobalt. Cov ntaub ntawv no yog ferromagnetic, uas txhais tau hais tias lawv muaj ib tug natural magnetic teb. Thaum lawv muab tso rau hauv ib qho chaw sib nqus sab nraud, lub ntuj sib nqus sib nqus nrog rau sab nraud magnetic teb, tsim kom muaj zog sib nqus.
Piv txwv ntawm Soft Magnet
Ib qho piv txwv ntawm cov hlau nplaum mos yog hlau. Hlau yog cov khoom siv ferromagnetic, uas txhais tau hais tias nws muaj qhov sib nqus ntawm lub ntuj. Thaum cov hlau muab tso rau hauv ib qho chaw sib nqus sab nraud, lub ntuj sib nqus ua ke nrog cov hlau nplaum sab nraud, tsim kom muaj zog sib nqus.
Hlau yog cov khoom siv nrov rau cov hlau nplaum mos vim nws muaj ntau thiab pheej yig. Nws kuj yog ib qho yooj yim rau magnetize thiab demagnetize, ua rau nws zoo tagnrho rau cov ntawv thov uas yuav tsum tau ceev-switching magnetic teb. Ib qho kev siv cov hlau nplaum mos ua los ntawm cov hlau yog nyob rau hauv hluav taws xob transformers.
Thaum ib qho alternating tam sim no dhau los ntawm cov hlau kauj, nws tsim ib qho chaw sib nqus uas oscillates rov qab thiab tawm mus. Cov tub ntxhais hlau ntawm lub transformer yog magnetized thiab demagnetized nyob rau hauv sync nrog rau alternating tam sim no, transforming lub zog los ntawm cov hluav taws xob fais fab mus rau qhov tso zis. Cov tub ntxhais hlau yuav tsum tau ua los ntawm cov khoom siv hlau nplaum mos kom tso cai rau kev hloov pauv sai ntawm cov hlau nplaum.
Cov hlau nplaum mos uas ua los ntawm cov hlau kuj tseem siv rau hauv daim ntawv thov sib nqus. Sib nqus shielding yog siv los txo cov kev cuam tshuam ntawm cov chaw sib nqus sab nraud ntawm cov khoom siv hluav taws xob lossis cov khoom siv kho mob. Cov khoom siv hlau nplaum mos tuaj yeem ua rau hauv daim ntaub thaiv, uas redirects lub magnetic teb nyob ib ncig ntawm cov khoom rhiab, txo qhov cuam tshuam ntawm sab nraud teb.
Xaus
Hauv kev xaus, cov hlau nplaum mos yog cov khoom sib nqus uas yooj yim magnetized thiab demagnetized. Nws muaj qhov coercivity tsawg, uas txhais tau hais tias nws yuav tsum tau siv zog tsawg dua los ua kom nws sib nqus thiab hloov nws txoj kev sib nqus. Cov hlau nplaum mos yog siv rau hauv cov ntawv thov uas yuav tsum tau hloov cov hlau nplaum nrawm.
Ib qho piv txwv ntawm cov hlau nplaum mos yog hlau. Hlau yog cov khoom siv ferromagnetic uas muaj lub ntuj sib nqus. Thaum hlau muab tso rau hauv ib qho chaw sib nqus sab nraud, nws ua raws li cov hlau nplaum sab nraud, tsim kom muaj zog sib nqus. Cov hlau nplaum mos uas ua los ntawm cov hlau yog siv rau hauv cov khoom siv hluav taws xob thiab cov ntaub ntawv sib nqus shielding.
