Isivintha sesikhathi yindlela yokuguqula umkhondo wokugcina (DC) ku-mkhondo wokuguqula (AC). Lokhu kubalulekile ngoba izinto zonke zokusebenzisa amandla ebandla nezinye izinto esizisebenzisa zihlala zisebenza ngokugcina. Isibonelo, lapho usindisela i-toaster noma i-TV, kufuneka kube nesikhathi sokugcina. Izivintha zisebenzisa kakhulu emisebenzini yamandla wesolari, apho izilayili ziyagcina amandla. Emva kwalokho isivintha siyaguqula ukuze usebenze ekhaya noma ushikele amandla kumkhosi. Kunezinhlobo eziningi zezivintha, njengoba kuka- Inverter Yonke-Enye , futhi ukukhetha okuhle kusiza ukuthintana nezimali zokusebenzisa amandla nokuthintana nezimali.
Kodwa ufuna ukuthenga amaphetha we-electrical ngokwesibonelo, kubalulekile ukubheka izinto eziningi. Okokuqala, khumbula ubukhulu be-power ofenzekayo okufuneke. Lokhu kusho ukuthi uziwe ukuthi i-devices zakho zisebenzisa yini umkhondo wokusebenza. Uma uplani ukusebenzisa izinto eziningi ngokuzimela, uzofuna amaphetha angaphezulu kakhulu. Isibonelo, ukusebenzisa isifridji, izilumkiso ne-computer, fumana eyodwa eyakwazi ukusebenzisa i-watts zonke. Okwesibili, hlole uhlobo lomaphetha. Kunezihlobo eziningi zika pure Sine Wave ne-modified sine wave. I-pure sine wave ina impilo engeyona nje kodwa iphakathi, okuyisifundo esihle kakhulu kuma-gadgets awasebenzisa ngokuphelele. Uma ungazi ukuthi yini ofuna ukuchaza, ubiza umqondo wokusho noma ubhukisane no-Minvon.