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DC tsav: lub ntaus ntawv, ib txoj hauj lwm daim ntawv thov

Cov ua hauj lwm sib tham nyob rau hauv no tsab xov xwm, lub tsev nyob nkaus rau lub phenomenon ntawm electromagnetic induction. Qhov no yog qhov yooj yim hauv paus ntsiab lus ntawm cov lag luam ntawm lub cev muaj zog DC. Nws yog zoo dua lub npe hu hais tias tam sim no-nqa neeg xyuas pib txuas thereon muab tso nyob rau hauv ib tug sib nqus teb cheeb tsam, muaj ib cov nyhuv zog, uas tej zaum yuav tsum tau txiav txim nyob rau hauv raws li cov sab laug-tes cai: F = B * Kuv * L, qhov twg -electric tam sim no kuv, B - induction teb; L - lub laij ntev. Hla kab ntawm magnetic quab yuam, tus neeg xyuas pib acquires ib tug electromotive quab yuam, uas nyob rau hauv relation mus tam sim no txaus yog hais tawm tsam nws, thiab yog hu ua ib tug rov qab los yog txee. Lub cev muaj zog converts tus DC fais fab mus rau hauv ib tug txhua yam hauv daim ntawv ntawm lub zog, tab sis kuj cov siv rau cov cua kub.

Nyob rau saum npoo ntawm tus neeg kho tshuab los ua ke ntaus ntawv yuav tsum pom raws li nram no: lub DC tsav qauv yog tus yooj yim, nws yog sawv cev los ntawm lub inductor thiab lub armature, uas yog cais los ntawm ib tug huab cua kis.

Inductor tsim ib tug ruaj ruaj magnetic teb ntawm lub tshuab thiab, nyob rau hauv lem, muaj ib tug ncej, tus ncej (ntsiab thiab ntxiv). Mounted rau tus ncej tug, thiab cov substrate nws tus kheej yog muab kev koom tes nyob rau hauv lub installation ntawm lub magnetic Circuit Court. Lub ntsiab teb winding tug comprise tsim ib tug sib nqus teb, thiab ntxiv - kauj los txhim kho lub kev twb kev txuas.

Tsav DC nruab nrog thauj tog rau nkoj ntawm cais los xij, hlau thiab kauj reservoir (ntsuas rau tus ncej lub tog raj kheej ntawm tooj liab cov phiaj). Khoom tshem tawm yog nqa tawm siv tam sim no txhuam. Lawv yog tsau thiab muaj nyob rau hauv ib tug tej yam txoj hauj lwm, uas yuav muab cov uas yuav tsum tau kev quab yuam ntawm siab rau lub collector nto.

Thaum lub sij hawm lub lag luam ntawm lub DC txhuam cev muaj zog tsiv tshaj lub saum npoo ntawm circulating reservoir nyob rau hauv xws li ib tug txoj kev uas lawv tas li tsiv los ntawm ib phaj mus rau lwm lub. Yog li ntawd hloov thaum uas tig mus seem ntawm lub kauj thiab armature tam sim no yuav hloov. Txheej txheem, raws li zoo raws li phenomena txuam nrog nws, yog hu ua switching. EMF ua ntxiv tam sim no, uas muaj ib tug tsis muab faib rau ntawm lub hwj chim ceev rau ntawm qhov chaw ntawm lub txhuam. Hais tias qhov no yog qhov tseem ceeb vim li cas rau sparking lub collector (nyob rau hauv cov kev siv ntawm no phenomenon yog kwv yees li switching thiab zoo muab qhab nia sau tseg nws powers).

DC tsav peev xwm ntawm niaj excitation - tsim nyob rau hauv nws ib tug sib nqus teb yuav tsum tau nyob rau hauv lub ntaus ntawv. Lawv muab faib ua plaub pawg (tsav tsheb txujci):

  • Independent uas nws winding powered los ntawm ib tug sab nraud DC qhov chaw.
  • Parallel - winding nyob rau hauv uas tig mus rau muab lub armature kauj.
  • Zoo ib yam - kev cob cog rua nyob rau hauv series.
  • Tov (nrog serial thiab thaum uas tig mus excitation coils).

Thaum xub thawj pib voltage thiab lub armature yog tsau nyob rau hauv nws yog pes tsawg. Kuj yog me me, yog li cov pib tam sim no yuav ua tau 10-20 lub sij hawm ntau dua li cov nyob. Yuav ua kom ib tug tus start-up yog thov stepwise resistor uas nws kuj muaj nqis tau yog raug xaiv los ntawm cov oob khab lub cev muaj zog tam sim no.

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