A shekara ta 1881, Tesla ya koma Budapest, Hungary, don yin aiki a karkashin Tivadar Puskás a kamfanin telegraph, Budapest Telephone Exchange. Bayan isowa, Tesla ya fahimci cewa kamfanin, a lokacin da ake ginawa, ba ya aiki, don haka ya yi aiki a matsayin mai tsarawa a Ofishin Telegraph na Tsakiya. A cikin 'yan watanni, Budapest Telephone Exchange ya zama aiki, kuma an ba Tesla matsayin babban mai lantarki. A lokacin aikinsa, Tesla ya yi gyare-gyare da yawa ga kayan aikin Central Station kuma ya yi iƙirarin cewa ya kammala maimaita wayar tarho ko amplifier, wanda ba a taɓa yin patent ko bayyana shi ba. Tambaya: Wace matsayi aka ba Tesla a Ofishin Telegraph na Tsakiya?
babban mai aikin lantarki