[Jukebox-list] Selenium Rectifier

[Jim Poe]

Thanks everyone,
Not planning to change it at this point, 'cus it ain't broke.  Just 
asking in case I come across the situation again.

Thanks again
Jim

Don wrote:
> Usually when you see a center tapped secondary winding powering a two 
> diode rectifier you need to watch to see if the center tap also serves 
> as the ground reference.   I think putting a four diode bridge across 
> the whole transformer secondary complicates things.... you get about 
> double the voltage which is not what the loads want.... even if you put 
> a bridge from center tap to one end of the secondary and another bridge 
> from center tap to the other end of the secondary, then tied the bridge 
> outputs together properly you run shorting risks in the bridges when 
> their diodes have extremely small differences in switching times.... 
> ergo they'll run hot even in the best case scenario... even if this 
> would seem to work it seems one risks overheated bridges and also the 
> possiblility that the wire size in the transformer secondary would not 
> be correct for the changed current demand.
> Ron is right, it was engineered for two diodes..... leave good news alone.
> Cheers,
> Don
>