This query is highly specific and refers to a well-known textbook in the Italian electrical engineering academic community. "Circuiti Elettrici" (literally "Electric Circuits") is a university-level textbook authored by Renzo Perfetti , a professor at the Sapienza University of Rome. It is a standard reference for courses in Electrical Engineering, Electronic Engineering, and Physics of Matter at many Italian universities.
If you are an instructor or student with legal access credentials, always log in through your university's proxy to access the publisher's official digital version. renzo perfetti circuiti elettrici pdf