Hom capacitors: strengths and weaknesses

Ib tug capacitor yog ib qho hluav taws xob ntaus ntawv uas tso cai rau mus khaws thiab ces xa ib tug hluav taws xob tawm. Lub ntsiab yam ntxwv ntawm lub caij yog lub peev xwm, kev txiav txim them nyiaj voltage dependence.

kev faib ntawm condensers

Ntau yam pab kiag li lawm tso technologies pub rau tsim ntau yam ntawm pab kiag li lawm. Los ntawm huab cua condensers muaj xws li cov khoom nyob rau hauv uas lub dielectric yog huab cua. Qhov zoo ntawm no hom ntawm pab kiag li lawm yog qhov yooj yim ntawm kev siv thiab ua. Lawv yog tsim rau cov neeg kho tshuab tswj peev xwm thiab yog tsim kev nruam txhua yam kev cuam tshuam. Qhov tsis zoo ntawm no hom ntawm ntaus ntawv muaj xws li tsis khov, cov neeg pluag cia siab rau, cov dependence rau cov av noo thiab kub ntawm qhov nruab nrab, loj loj, kuj tsis tshua muaj dielectric dag lub zog uas yog tas los ntawm huab cua neej puas ntawm cov sinkers thiab tsawg capacitance.

Muaj daim ntawv hom capacitors, uas ua raws li ib tug dielectric transformer roj impregnated ntawv. Cov pab kiag li lawm muaj ib tug siab dielectric zog thiab kev cia siab. Thaum ib tug high voltage , lawv muaj lub siab capacitance thiab tsawg to tam sim no.

Muaj ntau capacitors yog ua rau ib daim ntawv hauv paus rau fais fab nroj tsuag. Ua li no, quav ua ke rau ob daim hlau, ntawm uas daim ntawv. Tus ntaus ntawv yog ces dov rau hauv ib tug yob thiab muab tso rau hauv ib lub thawv, uas yog lawm ua tus sau nrog transformer roj thiab ces kaw. Qhov tsis zoo ntawm tus dais xws li ib tug ntau ntawm qhov ceeb thawj, siab nws tus kheej-inductance thiab kuj.

Electrolytic capacitors muaj dielectric hom, nyob rau hauv daim ntawv ntawm ib tug oxide txheej tsim rau ntawm qhov chaw ntawm lub active hlau (feem ntau yog txhuas). Tus ntaus ntawv los ntawm muab nyob rau hauv ib tug ntsha ua los ntawm ib tug active hlau daim kab xev, rau qhov chaw uas ib tug zaj duab xis yog tsim los ntawm ib tug ruaj oxide, uas cais tawm cov hlau.

Lub ntsiab feature ntawm lub electrolytic capacitors yog lub xub ntiag ntawm hom ntawm polarity, ib tug nqi uas lawv tuav lub nyob voltage, thiab thaum twg nws hloov sai pov tseg. Qhov no yog vim tshuaj dab tshwm sim nruab nrab ntawm cov ntsha thiab cov hlau phaj. Oxide zaj duab xis maj tej kab nrib pleb thiab so.

Txawm li cas los, nyob rau hauv kev ua raws cai nrog qhov tseeb polarity microcracks sai sai nruj tshiab oxide. Qhov zoo ntawm cov pab kiag li lawm xws li ib tug muaj peev xwm, lub shortcomings - polarity, tsis khoom, ceev ceev coj, siab nrog inductance.

Hom capacitors thiab lawv daim ntawv sau npe

Muaj kuj pab kiag li lawm nyob rau hauv uas ua hauj lwm pab raws li lub dielectric mica, lawv yog siv nyob rau hauv sib txawv sib. Txij li thaum mica ib leeg muaj peev xwm sawv ntawm khaws cia zog, cov capacitors muaj siab capacitance thiab dielectric zog. Qhov tsis zoo muaj xws li qhov tsis muaj tsis khov, nonlinearity, nqi siab thiab lub dependence ntawm lub capacitance tam sim no.

Tsis tas li ntawd siv no yog ua los ntawm tej hub hom capacitors, zaj duab xis, teflon, polypropylene thiab lwm yam pab kiag li lawm.