I want to ask that why do we use Bridge rectifier instead of Single diode?? in short single diode can also covert the AC to DC. I want o update my knowledge with strong logic. please do help me to know about it.

Thanks!

 

http://en.wikipedia.org/wiki/Diode_bridgeTry this and see if it makes sense to you.

 

Hello,

Have a look at the following page of the eBook:
http://www.allaboutcircuits.com/vol_3/chpt_3/4.html

Keep in mind that there are no buffer capacitors on the circuits shown.

Bertus

 

Thanks @ErnieM and @bertus I really appreciate your help.

 

there is less ripple with a four diode bridge, making it easier to filter.
cliff

 

Try this and see if it makes sense to you.

A single diode filters off the bottom half of the sine wave. A bridge rectifier flips the bottom half to the top hence more voltage and more current and less ripple.

Draw a sine wave. Cover the bottom half with a piece of paper. What's showing is what you get with a single diode. Now cut the paper with the sine wave on it along the zero line and flip the bottom half to the top of the zero line. That's what you get with a bridge rectifier. Pretty simple, really.

 

thanks for all.