Transformer and bridge rectifiers

Thread Starter


Joined Dec 17, 2015
Why do we use bridge rectifiers with laminated core transformers? If the transformer steps down the voltage to 24v volts (in my case) why should i use a bridge rectifier if i am building a linear voltage regulated power supply.

Currently working on an LM338K linear power supply.


Joined Mar 14, 2008
The lamination of a transformer core has nothing to do with using a rectifier to convert the transformer AC to the DC required by the regulator.
Why did you think there was some relation between those?


Joined Dec 2, 2013
I am missing the cap's over the diodes these are needed to conform with the emc directive.
Reason: The diode goes on when the voltage goes above the .6V approx this could produce a spike.
Caps at the Dc site will not eliminate this (it is a short cut for that spike) and the spike goes into the mains.