Piezoelectric crystals can help us in dis matter...bt at d most dey generate power in the range of mW which can drive handheld devices or wearable electronics..harvesting electrical energy of...

Mobile-phones emits small amount of electromagnetic signal via the radio waves which is RF energy. Every Mobile-phone has a low power transmitter in them. While talking over the cell-phone, the...

acc to me d best way to learn matlab is thru its help..its explains d basics very well nd den a little bit a xploring around d interface...dis is wat...

i have one ebook bt hvnt read it...contact me if u want it

* Network Analysis VanValkenburg * Engg Circuit Analysis Hayt & Kemmerly * Electric Circuits by Joseph A. Edminister * Fundamentals of Electric Circuits – Sadiku * Schaum Series....