Correction: My statement is true (or more true) if the load is unsymmetrical, not likely in an amp....) It's very true if you connect the windings in parallel. You can then get losses due to not equal voltage...
My recommendation is that it's no harm to use two bridges if you can afford it and/or have the room them.
My bridge type recommendation is a slow ordinary type with 4 caps. Use 10-100nF film or ceramic, good HF performance. 100 nF polyester 63V or 100V is quite alright.
You can also use a faster bridge but beware of the emission and decouple it carefully.
We'll cross that bridge
"My bridge type recommendation is a slow ordinary type with 4 caps. Use 10-100nF film or ceramic, good HF performance. 100 nF polyester 63V or 100V is quite alright.
You can also use a faster bridge but beware of the emission and decouple it carefully"
Use RC snubbers instead of just caps.
High speed soft recovery diodes generate MUCH LESS RFI noise. That is the point of using them.
Two bridges are worth using to keep the charging current out of the finite impedances of the power supply ground wiring.
The load on a power amplifier is asymmetric during large bass transients and music signals are also asymmetric.
I suggest all interested do a search since this has been discussed in some detail in the forum.
IMO lead and silver sonically do not go well together.
96%tin/4%silver is quite ok.
60% lead/38%tin/2%copper is quite decent, and tins/solders very well.
I know this is an old thread, but I was surprised that nobody mentioned the Chord Electronics amps (UK, nothing to do with with Chord interconnects). All of their amps have used SMPS for at least a decade, possibly two. These are very highly regarded-and expensive-units.
Check out this site: www.chordelectronics.co.uk
They look gorgeous too!
The Chords are indeed an exception. They don't have an SMPS for cost reasons but because they are convinced that their power supply is better than a conventional supply.
But there is much effort put into the development and construction of their SMPS compared to a PC grade powersupply, i.e. it is definitely NOT cheaper than a conventional power supply.
I once heard a real beefy Chord amp connected to a newer Tannoy Speaker (I think the name was "Dimension 12"). And I can confirm the combination sounded clean and pleasing. And when cranked up it sounded still that clean and unstrained but quite brutal !
Chord amplifiers are the ones that are recommended for use with the larger Dynaudio Acoustics Studio Monitors.
Even though I once developped an SMPS, I would strongly recommend generously designed conventional powersupplies for DIY.
A question for Scorpion:
The IXYS high speed soft recovery diodes are excellent. I have also used RC snubber on hign speed diodes and seen reduction of high frequency noise. The only reason I can think of to use regular slow diode bridges is to save money. I have changed to high speed soft recovery diodes on dozens of audio circuits with great results.
You said :" He personnaly knows the owners (see inventors) of companies like Sim Audio, Classé, Totem (years ago) and especially Tenor Audio (recently)and has sometimes helped or commented on their project (some of the Tenor Audio stuff are now on the market)."
What is the name of this guy?
I know it was years ago but should you guies be interested in how my dual-mono power amp looks, here are a few pictures. It weights 140 lbs !!!
This is the MKII version as I modified a few things along the way.
Should you have any questions, please don't hesitate.
Marc-André alias ''Scorpion''
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