This in regard to voltage multipliers chapter given in the AAC textbook.
http://www.allaboutcircuits.com/vol_3/chpt_3/8.html
In the voltage tripler is Diode D3 connected to node 3 or is it connected to node 4.I think it is connected to node 4.Then shouldnt we have used a jumper as in the figure below, or am i going wrong somewhere???