Curie kub ntawm transformer core

"Qee lub sij hawm rov qab, ib tug neeg nug yog hais tias lub magnetic core muaj qhov kub thiab txias tsis kam. Thiab ib tug neeg teb zoo li no:

'Tsub tiv thaiv qib yog rau cov ntaub ntawv insulating. Cov tub ntxhais hlau nplaum tsis suav tias yog cov khoom siv insulating, yog li nws tsis muaj qhov ntsuas kub tsis kam. Tab sis nws muaj qhov tseem ceeb ntawm qhov ntsuas kub ntsig txog hu uaCurie kub.'

Hnub no wb tham txog 'Curie kub' ntawm lub magnetic core.

Curie kub, tseem hu ua Curie point lossis magnetic transition point, yog thaum lub zog magnetic teb ntawm cov khoom poob rau 0 raws li nws rhuab. Nws tau tshawb pom los ntawm Curies thaum xyoo pua 19th: thaum koj ua kom sov ib lub hlau nplaum rau qhov kub thiab txias, nws cov hlau nplaum qub ploj mus.

Hauv transformers (inductors), if themagnetic tub ntxhaisQhov kub siab tshaj nws qhov kub ntawm Curie, nws tuaj yeem ua rau inductance poob mus rau 0. Thaum cov khoom feem ntau tuaj yeem rov ua haujlwm tom qab txias, rau transformers (inductors) hauv kev ua haujlwm, muaj pes tsawg inductance yuav ua rau tsis ua hauj lwm thiab burnout.

Yog li thaum tsim thiab xaivtransformers(inductors), nws yog ib qho tseem ceeb uas yuav tsum tau tawm ntawm ib co paj rau khaws cov hlau nplaum core kub hauv qab nws Curie point thaum lub sijhawm ua haujlwm.

Curie kub ntawm lub zog manganese-zinc ferrite yog tshaj 210 ° C. Feem ntau cov khoom siv hluav taws xob (inductor) rwb thaiv tsev muaj qhov kub qis dua qhov no, yog li thaum lub sijhawm ua haujlwm, cov hlau nplaum feem ntau yuav tsis ncav cuag qhov kub siab. "

Curie kub ntawm high-conductivity manganese-zinc ferrite yog tshaj 110 ° C. Feem ntau cov khoom siv hluav taws xob (inductor) rwb thaiv tsev tuaj yeem tswj tau qhov kub siab tshaj qhov no, thiab qhov kub ntawm qhov hloov pauv (inductor) tom qab ua haujlwm tuaj yeem yooj yim mus rau saum toj no. Yog li, peb yuav tsum tau them sai sai rau qhov peb tsim high-conductivity sib nqus cores kom paub tseeb tias lawv tsis kub dhau thaum lawv siv.

Curie kub ntawm nickel-zinc ferrite yog tshaj 100 ° C. Ib yam li nrog high-conductivity ferrite, nws yog ib qho tseem ceeb heev kom paub tseeb tias cov hlau nplaum tsis tau kub dua li Curie kub thaum lub transformer (inductor) ua hauj lwm. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau peb cov khoom siv nickel-zinc, xws li I-shaped inductors, pas nrig-shaped inductors, thiab nickel-zinc toroidal inductors.

Curie kub ntawm cov hmoov hlau alloy yog tshaj 450 ℃, uas yog qhov zoo nkauj heev. Nyob rau hauv cov ntaub ntawv no, peb yuav tsum tau ceev faj ntxiv txog yuav ua li cas zoo lwm yam Cheebtsam ntawm transformer (inductor) yuav ua tau cua sov.

Kab lus no los ntawm Internet thiab belongs rau nws tus thawj sau.