economical pump controller

[Ann Margareth]

gud aftrenoon. im a 5th year ECE stud. im enrolled in project study, i chose the economical pump controller to be one of the proposed topic of our group, d problem is, i dunno how the circuit was made.. i believe that there are some computations before we arrive in the circuit as shown in the site. please help me..

 

[MP1]

It would be helpful if you would add a link to the project in your post.

MP