Xa sinezinto ezininzi zokuchasa kwisekethe yombane, i ukumelana ngokulinganayo, iba sisichasi esinye esinokuthi sithathe indawo yazo zonke ezinye kwisekethe eyenziwe lula. Ukuba ufuna ukwazi ngakumbi malunga noku, gcina ukufunda ukuze wazi yonke into malunga Ukuchasana ngokulinganayo kunye nezibalo zayo.
Ukubala konqaba olulinganayo kuthotho.
Kukuthini ukumelana okulinganayo?
Kuya kufuneka siyiqonde into yokuba ixabiso lokuchasana nombane, ngokubhekisele koku sele kukhankanyiwe, ukuyenza ilungelelane, kuya kufuneka ukuba i-voltages, imisinga kunye nokuchasana okupheleleyo kwesekethe enye kufane nezo zesekethe yoqobo nazo zonke izichasi zokuqala, ke ziimeko zokuba zilingane ngokwenene.
Ngokukwanjalo, kufuneka ukhumbule ukuba ukuxhathisa umbane ngokulinganayo kukuchasana endaweni enye ukuze kube lula ukubala ngaphakathi kweesekethe. Ke ngoko, sisakhono semathematika apho kunokwenzeka khona ukuba ufunde indlela yokuziphatha kwesekethe ngokulula ngokuxhathisa.
Resistors alinganayo kuthotho
Ukuba sinesekethe enezinto ezimbini okanye ezingaphezulu zokuxhathisa kuthotho ilingana nenye enesichaso esinye esixabisekileyo sisisixa sazo zonke izinto ezichasayo kuthotho kwaye siyakubizwa ngokuba yiTotal Equivalent Resistance. Ukuba, umzekelo, sinikwe izichasi ezi-3 kuthotho njengakwimifanekiso yangaphambili, ukubala ukulingana kwazo okanye zizonke, kufuneka sizongeze:
- Ukulingana ngokulinganayo = 10 + 5 + 15 = 30Ω
Ke ngoko umbane uya kuhlala uyi-6V. I-Re efanayo iya kuba kukuchasana okupheleleyo kwesekethe, kwaye ukuba sibala ubungakanani besekethe iya kufana nesekethe yokuqala ebizwa ngokuba sisekethe efanayo. Kuyimfuneko ukuba uyigcine engqondweni into yokuba ngokulingana, oko akuthethi ukuba kuyafana, zahlukile kodwa ziyafana iisekethe, kuba ivolthi yazo iyonke, uxinzelelo olupheleleyo kunye nokuqina okupheleleyo kuyafana.
Ngaphakathi kwisekethe elinganayo, kusetyenziswa umthetho ka-Ohm, iitotali zangoku zesekethe zifunyenwe njengesiphumo, ukubala: I totali = VT / Rt = 6/30 = 0,2A. Oku kuyakufana kwiisekethe zombini. Ke ngoku, ukuze sikwazi ukusombulula isekethe yokuqala kulula, kuba siyazi ukuba ixabiso lesekethe lixabiseke kangakanani, enkosi ukumelana ngokulinganayo esizibalileyo kwisekethe yesibini.
Ukuchasana ngokulinganayo ngokufanayo
Kwiisekethe ezifanayo, ukubala ukunganyangeki kuya kuba nzima ngakumbi, kodwa hayi ukufela. Ukuba sinokumelana ngokulinganayo kwezinto ezininzi ezichaseneyo ngokufanayo, kuya kufuneka sibale ngefomula yoku:
- Rt = 1/1-R1 + 1-R2 + 1-R3 +…
Nangona ibukeka inzima ngakumbi kunokuba kuthotho, kufuneka ihlangane neemeko zokulingana ngale fomyula. Ngokufaka amaxabiso endaweni ye-R1, R2 kunye ne-R3, uxhathiso olulinganayo lubalwa; Ukulingana ngokulinganayo = 2,73, kuthathelwa ingqalelo ukuba ukuxhathisa okupheleleyo ngoku ngoku kuya kuba kuncinci kunoluhlu.
Ukuchasana ngokufanayo.
Kwelinye icala, ukuba ubungakanani besekethe bubaliwe, ubalo osinike lona luya kufana nolo lweesekethe ezidlulileyo ezichasayo ezi-3: Itotal = Vt / Rt = 5 / 2,73 = 1,83A.
Ngoku sinokubala imisinga kwindawo nganye kwisekethe yokuqala kuba siyazi umbane kwisebe ngalinye (5V kuyo kuba iyahambelana) kwaye siyayazi into yokumelana kwisebe ngalinye (R1, R2 okanye R3).
- I1 = V / R1; I2 = V / R2; I3 = V / R3; Isiphumo sokuqina kwe-3 kuyakufuneka silingane ne-Itotal ebalwe ngaphambili.
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