Suggestions for DIY Power Supply Kit/Plans

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F_Dieckmann

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I'm sorry to say that almost nothing was right here
« Reply #20 on: 25 Nov 2004, 07:59 am »
Andrew L Weeks regulator is indeed a Jung Super Regulator. It based on the regulator design Walt Jung over several years in The Audio Amateur and Audio Electronics. Andy design is based on the final published results by Walt Jung. Andy's communications with Mr. Jung has given Walt enough familiarity with the design to feel comfortable with giving Andy permission to call it a Jung Super Regulator. Peranders design was a copy of the design with some changes including, but not limited to SMT parts, options for different voltage references, a universal PCB for positive and negative voltages. I cannot comment on the performance of Peranders regulator, other than to state that a few years of work went into the evolution of ALWs Jung Super Regulator and that Peranders design was designed after much discussion of the ALW Jung Super Regulator on the DIYaudio.com forum. Also that Walt Jung asked Peranders not call his design a Jung Super Regulator due to the changes made in the published Jung design and with Walts unfamiliarity with the effect of these changes on the performance goals of his original design.

Layout and component choice are extremely important for the best measured and sonic performance. Having four of ALWs PCBs I can state that he has made some excellent choices in his design and it is probably the State of the Art as far as available op amp based regulator designs available at present. The general consensus on speed, stability, and sonics; is that the AD 825 op is the best choice for this design and is superior to the AD 797 for the design. I am playing with some further changes with the design including a mosfet buffer for the op amp and a preregulator based on a high speed low noise chip amps (instead the over two decades old three terminal regulator designs like the LM317 and LM337) and may report on my results if there is sufficient interest.

Occam

Suggestions for DIY Power Supply Kit/Plans
« Reply #21 on: 25 Nov 2004, 02:34 pm »
Hey Fred,

Welcome to AudioCircles, and especially the Lab Circle!!!
I'm looking forward to your allways astute contributions.

Regards,
Occam

peranders

Suggestions for DIY Power Supply Kit/Plans
« Reply #22 on: 25 Nov 2004, 02:44 pm »
Yes, Mr. Dieckmann has great knowledge and I would call him a high-end audio expert without any hesitation. He is really helpfull also to solve your tricky problems.

Feel very much welcome, Mr. Dieckmann.  :D

andyr

Suggestions for DIY Power Supply Kit/Plans
« Reply #23 on: 26 Nov 2004, 09:04 am »
Quote from: JoshK
Excuse the dumb question but if you were to build a PS for a phono stage, would you use a regulated or unregulated PS and why?  Or is it case by case?
Hi, Josh,

Not sure if you got a good answer to your Qu in this long thread so I thought I'd chip in ... as I've just finished building power supplies for my phono stage and active crossovers.

As peranders said "only power amps have unregulated supplies" ... because you want them to be able to suck high instantaneous current and, as I understand it, "regulation" by its very nature acts against this.

A constant-current source device, in contrast, basically does not make unreasonable demands on its power supply ... so you can use regulation to stabilise the DC rail and reduce ripple ... leading to less noise and more detail from the audio circuit.

Regards,

Andy

peranders

Re: Suggestions for DIY Power Supply Kit/Plans
« Reply #24 on: 19 Apr 2006, 08:32 am »
Quote from: covermye
Looking for a good DIY power supply kit or at least general plans (just plans prefered, actually).  Caveat is that I'd like to be able to "fine tune" the voltage.  

Thanks in advance, guys...

Hi!

Did you find anything?