voltage multiplier

i want to know how a voltage multiplier works?
for example take a bridge voltage doubler or simple voltage doubler.
plz explain with suitable diagram and example...

You must be a EE major as this sounds like a different class from the one that is obviously going thru modulation schemes.

Again, provide some context about yourself. I asked some detailed questions in another thread. You need to answer those before we can continue.

You also need to show you're doing some work too. So far you appear to just be dumping the raw homework questions here. What specifically about a voltage multiplier are you confused about? Surely the basics are in your textbook. What part of the explanation there did you not understand that we can help with?

may this link can help you

http://technosains.com/Voltage-Multiplier-Circuit.htm