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Recent content by iman28aban

  1. I

    Problem in proving an equation in Digital Communication (J.G.Proakis 5th Edition)

    Digital Communication by G.Proakis, Chapter 3(Digital Modulation Schemes) , Page 133 Please help me how to prove this equation? The book considers this as an equation that students should already know! My professor also put a question mark on it and made it an assignment for students. Thanks...
  2. I

    adding high voltage AC and DC signals

    I accept as true that transformer would saturate while transforming DC voltages from primary side to secondary. That's why I wanted to add this DC voltage in the secondary side rather than primary. So what other choices do you recommend? Isn't there really a possible way to create such an...
  3. I

    adding high voltage AC and DC signals

    Thanks for your answer Audioguru, the project as the name suggests, is in the field of power electronics. the load can be up to 1 ampere in the output side. The goal of this project is approaching a asymmetrical of high voltage sin-wave with frequency of 100 Hz(each steps considered 1 volt per...
  4. I

    adding high voltage AC and DC signals

    Hi and salute to everyone who just read this post, I am an electrical and electronic engineering student and have a question about adding high voltage AC and DC signals. AC->150 volts Sin(2*pi*100*t) DC->50 volt I know that operational amplifiers(OP-AMP) can be used for purpose of...
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