Kemgbe 1990s, obodo m ewebatala ụdị ụdị igbe igbe America, na usoro nke mgba ọkụ ibu, mgbanaka netwọọkụ mgbanaka na fuse dị mfe n'ime tank mmanụ nke na-agbanwe agbanwe ma tinye ya na mmanụ.Onye njide na-anabatakwa ihe njide zinc oxide na-emikpu mmanụ.Ihe ngbanwe ahụ na-akagbu ohiri isi mmanụ, na tankị mmanụ ọkụ na radiator na-ekpughere ikuku.Ụdị mgbanwe igbe a bụ nke a na-akpọ American box Change, nke a na-atụnyere igbe nke kwụ n'akụkụ ihe ntụgharị.N'ihe gbasara olu, ndị na-agbanwe ụdị igbe ụdị nke Europe na-ebuwanye ibu n'ihi ntinye n'ime ụlọ nke kabinet na mgbanwe mgbanwe.The American igbe-ụdị transformer nwere obere olu n'ihi agbakwunyere echichi.N'ihe gbasara nchekwa, a na-echekwa akụkụ voltaji dị elu nke ihe ntụgharị igbe Europe site na ngbanwe ibu na fuse na-egbochi ugbu a.Mgbe fuse otu nkeji na-afụ, na-eji striker nke fuse na-emeghe atọ-phase ibu mgba ọkụ n'otu oge iji zere frasi ọnwụ ọrụ, na ibu mgba ọkụ na-chọrọ ka nwere ike ebipụ na nyefee ugbu a.A na-echekwa akụkụ dị ala voltaji site na ngbanwe ibu na fuse ugbu a na-ejedebe, na akụkụ elu voltaji nke igbe igbe America na-echebe ya site na fuse, ebe ngbanwe nke ibu na-enwe naanị ọrụ nke ịgbanye ma bepụ elu dị elu. -voltaji ibu ugbu a, na ike dị obere.Mgbe a na-afụ ụfụ na-agba ọsọ na akụkụ voltaji dị elu, voltaji dị n'akụkụ obere voltaji ga-ebelata, na nchebe n'okpuru voltaji ma ọ bụ nchebe nke ugbu a nke plastic ikpe akpaka ikuku mgbanwe ga-eme ihe, na obere voltaji arụ ọrụ. agaghị eme.Site n'echiche nke ọnụ ahịa ngwaahịa, ọnụahịa nke igbe ndị Europe dị elu.Site n'echiche nke ohere mbelata ọnụahịa ngwaahịa, a ka nwere ohere mbelata ọnụahịa buru ibu maka ndị na-agbanwe igbe igbe America.N'otu aka ahụ, a na-eme ka ọkpụkpụ ígwè dị n'akụkụ atọ nke ise nke ihe ngbanwe nke igbe America nwere ike gbanwee ka ọ bụrụ isi ígwè nke atọ.N'aka nke ọzọ, akụkụ nke elu voltaji nke igbe igbe America nwere ike gbanwee site na A na-ebugharị mmanụ ọkụ na-ebuga n'èzí nke tank mmanụ, na-eji ohere nke ọnụ ụlọ dị elu.