Mgbe ihe fọrọ nke nta ka ọ bụrụ afọ 10 nke mmepe, ụgbọ ala eletrik ọhụrụ emepụtala ụfọdụ nkwụnye ego. Nhazi nke akụkụ ụgbọ ala eletrik na akụrụngwa nwere ọtụtụ ihe ọmụma, n'etiti nke atụmatụ nkeprecharge resistorna sekit tupu odori kwesịrị ịtụle ọtụtụ ọnọdụ na ọnọdụ ọrụ. Nhọrọ nke precharge resistor na-ekpebi ọsọ nke ụgbọ ala tupu oge ịchaji, nha nke ohere nke precharge resistor, nchekwa ụgbọ ala dị elu, ntụkwasị obi na nkwụsi ike.
Precharge resistorbụ resistor nke ji nwayọọ nwayọọ na-ana capacitor n'oge mmalite nke ike ọkụ dị elu nke ụgbọ ala, ma ọ bụrụ na ọ dịghị pre-charge resistor, chaja ugbu a ga-adị oke ukwuu iji mebie capacitor. Ike voltaji dị elu agbakwunyere ozugbo na capacitor, ya na mkpirisi mkpirisi ozugbo, oke mkpirisi okirikiri ga-emebi ihe eletriki voltaji dị elu. Ya mere, mgbe ị na-emepụta sekit, ekwesịrị iburu n'uche precharge resistor iji hụ na nchekwa nke sekit.
Enwere ebe abụọ na sekit voltaji dị elu nke ụgbọ ala eletrik ebeprecharge resistora na-eji ya, ya bụ moto njikwa precharge circuit na elu-voltage ngwa pre-charging circuit. Onye na-ahụ maka moto (inverter circuit) nwere nnukwu capacitor, nke a ga-ebu ụzọ kwụọ ụgwọ iji jikwaa capacitor chaja ugbu a. Ngwa ngwa voltaji dị elu n'ozuzu nwekwara DCDC (DC converter), OBC ( chaja on-board), PDU (igbe nkesa voltaji dị elu), mgbapụta mmanụ ọkụ, mgbapụta mmiri, AC (conditioning compressor) na akụkụ ndị ọzọ, a ga-enwe. nnukwu capacitance n'ime akụkụ ahụ, n'ihi ya, ha kwesịrị ibu ụzọ kwụọ ụgwọ.
