Kodi ndi capacitor mu AC dera?

Ngati ndi AC magetsi chikugwirizana ndi resistor ndi, panopa ndi voteji mu dera pamalo alionse chithunzi nthawi ndi njila kwa wina ndi mnzake. Izi zikutanthauza kuti zokhotakhota wa panopa ndi voteji lidzafika "pachimake" mfundo imodzi. Pankhaniyi tinganene kuti panopa ndi voteji ali mu gawo.

Tiyeni tsopano tione mmene zinthu mu capacitor AC dera.

Ngati variable voteji gwero olumikizidwa kwa capacitor, ndi mtengo pazipita voteji kudutsa chidzakhala molingana ndi phindu pazipita panopa osefukira dera la. Komabe, pachimake yoweyula sine yoweyula voteji sadzakhala patsogolo pa nthawi yofanana ndi apano pazipita.

Mu chitsanzo ichi phindu yomweyo wa panopa ukufika mtengo wake pazipita ndi nthawi kotala (90 el.grad.) Pamaso NDIDZAKHALA nkhawa. Pankhaniyi tinganene kuti "panopa akutsogolera voteji ndi 90◦».

Mosiyana ndi vuto mu dera postoyanngo mtengo panopa V / Ine si nthawi zonse. Komabe, chiŵerengero cha V Max / Ine mtengo Max ndi zothandiza mu Magetsi otchedwa capacitive impedance (Xc) wa chigawo cha. Popeza mtengo ichi chikusonyeza chiŵerengero cha voteji kuti panopa, ie, weniweni ndi kukana kuyeza unit ohms ake. Mtengo Xc capacitor zimadalira capacitance (C) ndi AC pafupipafupi (f).

Popeza kugwirizana kwa capacitor ndi AC umagwiritsidwa rms voteji, monga akupezeka alternating dera panopa, amene okha capacitor a. malire Ichi ndi chifukwa cha reactance wa capacitor lapansi.

Choncho, phindu la masiku ano ndi dera munali palibe zigawo zina kupatula capacitor ndi anatsimikiza mtima Ohm M'chilamulo zina Baibulo

Ine _RMS = U _RMS / X _C

Kodi U _RMS - muzu zikutanthauza lalikulu (rms) voteji. Onani kuti X m'malo _ndi mtengo wa R mu buku la Chilamulo Ohm kwa DC.

Tsopano ife tikuona kuti capacitor mu AC dera khalidwe monga resistor amodzi ndi zinthu Choncho zovuta. Pofuna kumvetsa bwino njira kunachitika dera amenewa, m'pofunika kuti atchule chiphunzitso cha vekitala lapansi.

Ganizo yaikulu ya vekitala wa - chifaniziro ichi kuti kufunika zovuta za nthawi-osiyanasiyana chizindikiro akhoza ankayimiridwa ngati mankhwala a nambala zovuta (zomwe zimadalira pa nthawi) ndi chizindikiro zovuta zomwe ndi ntchito ya nthawi.

Mwachitsanzo, tikhoza akuimira Ko ntchito A (2πνt + θ) monga zovuta zonse A ∙ mauthenga ^jΘ.

Popeza zamoyo zina akuimira ndi kuchuluka (kapena gawo) ndi ngodya, ndiye iwo amakhala zimaonetsa ndi muvi (vekitala kapena) onsewo mu XY ndege.

Popeza kuti voteji kudutsa capacitor "zomwe zikutsalirazi" pankhani panopa woimira mfundo zawo imakonzedwa ndege zovuta monga tikuonera chithunzi pamwambapa. Mu chithunzi ichi, voteji ndi zamoyo zina panopa ali zimayenda zosiyaniratu malangizo kutsogolo.

Mu chitsanzo ichi pano pa capacitor chifukwa kudulitsa ake nthawi. Monga capacitor AC dera amatha kusunga ndi nthawi bwererani ndi mlandu magetsi, pakati pa izo ndi gwero mphamvu kuwombola zonse mphamvu, amene ali magetsi otchedwa zotakasika.