could anyone tell me what are the differences b/t bridge FW rectifier and centre tapped FW rectifier

 

Do not hijack three year old threads.

 

Pretty sure its half the Peak to Peak voltage for Center tapped.

 

what about the peak inverse voltage,why do we use a bridge rectifier instead of the centre tapped one

 

A bridge rectifier will work with any transformer, center-tapped or not. Example: a 12Vrms center tapped secondary will serve to supply either 17Vpk or 8.5Vpk, or two each 8.5Vpk using two bridge rectifiers using a bridge rectifier. The same transformer will supply only 8.5Vpk using a two-diode full wave rectifier.