# full wave rectifier

Discussion in 'General Electronics Chat' started by sarika rajesh, Jun 5, 2014.

1. ### sarika rajesh Thread Starter New Member

Jun 3, 2014
3
0
Hi,

from so many days am not clear at full wave bridge rectifier calculation.
consider i have used 8-0-8 step up trnasformer and bridge rectifeir is designed.
what will be the voltage at transformer secondery and volatge at bridge rectifier output.
requesting you to help me with clear gud example of full wave bridge rectifier with calculations.

Thank you
Sarika

Jan 2, 2010
400
134
3. ### ScottWang Moderator

Aug 23, 2012
4,929
777
AC 8-0-8 → Full wave rectifier → Cap filter → Vout
Vout = 8Vac x 1.414 - (0.7V*2) = 11.3Vdc - 1.4Vdc =9.9Vdc

Last edited: Jun 6, 2014
4. ### BobTPH Active Member

Jun 5, 2013
806
121
Depends on which kind of full wave rectifier you are talking about. If you use one diode from each of the ends and use the center tap as ground, you will get 8 * 1.414 -0.7 = 10.6V.

If you place a full wave bridge across the two ends, leaving the center tap unused, you get 16 * 1.414 = 2 * 0.7 = 21.2V

Bob

5. ### ScottWang Moderator

Aug 23, 2012
4,929
777
Oh, I forgot the 8V-0-8V no need to use the full bridge, so only need to reducing 0.7V, thanks.