i have to make a two page essay for three phase full wave rectifier and three phase half wave rectifier...but i cannot understand although i have read n search on the internet..can anyone explain more detail about it or does anyone know where to find full information of this topic..thank you

 

Your question is vague as to what you do not understand. Try our Ebook chapter on diodes to see if it helps - http://www.allaboutcircuits.com/vol_3/chpt_3/1.html

 

You mustn't have searched very hard - there are many hits available.

Try this link which gives a good overview of the topic.

http://books.google.com.au/books?id=A7w4_Nw85soC&pg=PA28&lpg=PA28&dq=half+wave+three+phase+rectifier&source=bl&ots=dLw6Kj6GLO&sig=D1G-QRbzKnHREcG_4iLy1ZI94Ic&hl=en&ei=PN5sTL6LJIfSsAP39MS4Cw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CDYQ6AEwCDg8#v=onepage&q=half%20wave%20three%20phase%20rectifier&f=false