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-   -   Parallel bridges? (http://www.diyaudio.com/forums/power-supplies/115063-parallel-bridges.html)

Skorpio 8th January 2008 11:41 AM

Parallel bridges?
 
Is it possible to use parallel bridge rectifiers in a power supply if seperate psu for each channel is wanted with only one transformator?

Is there any drawbacks?

Nordic 8th January 2008 12:00 PM

Works quite well in fact... assuming each will have a capacitor bank or some other type of PSU after it...

Skorpio 8th January 2008 02:05 PM

Yes, it was the idea....each having a double pair of capacitors and equal load...

Thank you....;)

Groundloops 26th June 2009 09:02 PM

Just stumbling about this - By paralleling you mean connecting two bridges on one transformer? Or do you mean "stacking" two bridges?

wwenze 27th June 2009 01:30 AM

I'm guessing threadstarter is trying to make some kind of dual-mono supply without the additional transformer.

Although I'm not sure how having separate bridges will help apart from more capacity and better isolating between the two capacitor banks... wait... that's a good enough reason.

star882 27th June 2009 05:42 AM

Some PC power supplies with multiple 12v rails have a separate rectifier and filter stage for each rail, but sharing the transformer. (The best ones have completely separate switching supplies for each rail, most simply have separate post-filters, and the cheapest ones lie and do not really have multiple rails.)

Jan Dupont 27th June 2009 05:56 AM

Many amps uses this type of separated PSU.
And it works quite well. Go with it, but remember to use lots of uF to get full benefit from this design ;)

Sadly many manufactorers using this type of PSU claims that their amps are true mono build, even though the two channels shares the same transformer :(


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