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Parallel bridges?
Parallel bridges?
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Old 8th January 2008, 10:41 AM   #1
Skorpio is offline Skorpio  Denmark
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Default 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?
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Old 8th January 2008, 11:00 AM   #2
Nordic is offline Nordic  South Africa
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Works quite well in fact... assuming each will have a capacitor bank or some other type of PSU after it...
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Old 8th January 2008, 01:05 PM   #3
Skorpio is offline Skorpio  Denmark
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Yes, it was the idea....each having a double pair of capacitors and equal load...

Thank you....
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Old 26th June 2009, 08:02 PM   #4
Groundloops is offline Groundloops
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Parallel bridges?
Just stumbling about this - By paralleling you mean connecting two bridges on one transformer? Or do you mean "stacking" two bridges?
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Old 27th June 2009, 12:30 AM   #5
wwenze is offline wwenze  Singapore
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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.
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Old 27th June 2009, 04:42 AM   #6
star882 is offline star882  United States
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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.)
"Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!
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Old 27th June 2009, 04:56 AM   #7
Jan Dupont is offline Jan Dupont  Denmark
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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
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
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