Hi guys, just a quick note on power supply regs:
In standard form, the shig receives 8V. This voltage, which can be supplied off a super reg, feeds the motors. It is also used by one of the chips to create a seperate 5v output, which feeds stuff like processors etc
What I have done, using one of Peter's recent photo's, is cut the 5v link and fed this from a alwsr reg. The 8v is fed from a standard LM317
What I would still like to do is feed VREF from a JohnW reg
FWIW
In standard form, the shig receives 8V. This voltage, which can be supplied off a super reg, feeds the motors. It is also used by one of the chips to create a seperate 5v output, which feeds stuff like processors etc
What I have done, using one of Peter's recent photo's, is cut the 5v link and fed this from a alwsr reg. The 8v is fed from a standard LM317
What I would still like to do is feed VREF from a JohnW reg
FWIW
I use two separate transformers, the voltage to 5V regulator is much smaller (around 10V or so). Most regulators will handle higher input voltages, the biggest problem is current draw, but the 5V circuitry shouldn't draw much.
I also started this topic, the Belleson Superpower, the ultimate voltage regulator: http://www.diyaudio.com/forums/powe...on-superpower-ultimate-voltage-regulator.html
· Superpower compared to a Battery
· Superpower compared to a Jung style super regulator
· Superpower compared to LM317
· Superpower compared to LM7812
· Superpower compared to Dexa NewClassD
· Superpower compared to Burson
· Superpower compared to a Battery
· Superpower compared to a Jung style super regulator
· Superpower compared to LM317
· Superpower compared to LM7812
· Superpower compared to Dexa NewClassD
· Superpower compared to Burson
additional problem seems to be that bsp129 is not available from Mouser or Digikey.
In Europe Distrelec has those Infineon fets. You can also try to find the old T092 variant BSS129
Hi Peter,
There are much choises in regulators why have you chosen this one.
Have you test also other brands or is this the only one you test in the Shigaclone?
I know, nobody can test "ALL" brands because this is to expensive.
I ask this because finised products are easy to use for the most people, the only negative is they are very expensive.
What do you all think of the Sallas regulator, you find that reg here on the forum?
Regards,
Rudy
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Thanks massimo,
Utsource has the BSS129, Distrelec has no stock, will order them for me....same huge leadtime.
I'm not the type of person who needs to try everything, I also almost never measure anything.
When it comes to regulators, to me the sound is most important, and regulators, as well as raw power supplies, behave exactly the same way as any other audio circuit. Which means they add their own signature and with parts selection can be tweaked to deliver desired "effect".
Over the last two years we've been working with Bobken on optimizing my NOS DAC circuit. Many changes have been introduced (mostly simplification of existing circuit) with special attention to parts choices and of course implementation of discreet regulators. I posted pics of my latest prototypes here: http://www.diyaudio.com/forums/pass-labs/3840-beaty-p2p-wiring-4.html#post2412552
We've been using highly optimized series regulator initially and later switched to the shunt one, and that made subtle but important difference. Also, even small changes to parts selection, where influencing sound substantially. In other words, it's not only the circuit, but also the type of parts and caps values that can either make it an average or spectacular sounding regulator. And we've been fiddling with those for at least a year. So when I already had an optimized 5V regulator proven and tested in a DAC, it was only natural to try it with a transport.
When I was developing the phono stage circuit, I also tried ALWSR and teddy regulators, but they didn't sound as good as the shunt I used there. That shunt is somewhat different that 5V reg I used in a DAC , but if you look at the circuit you may notice that configuration is very similar, just different devices were used: http://www.diyaudio.com/forums/audio-sector/151938-phono-stage.html#post1928600
That's why when I saw Bobken circuit, I didn't really feel the need to look any further.
As to Salas, I never tried it, however, the need to use heatsinks makes it very inconvenient for small digital circuits.
