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-   -   Mr. Jung's new shunt regulator! (http://www.diyaudio.com/forums/power-supplies/220734-mr-jungs-new-shunt-regulator.html)

jackinnj 30th September 2012 06:09 PM

Mr. Jung's new shunt regulator!
 
AudioXpress interviews WJ in the October 2012 issue -- he describes a new shunt regulator with a cascode pair of the DN2540 depletion MOSFETs as the current source, and a PNP (D45H11) used as the shunt element for the positive.

I guess you'll have to buy the issue to see it.

Nicke 30th September 2012 06:33 PM

Quote:

Originally Posted by jackinnj (Post 3185122)

I guess you'll have to buy the issue to see it.

Or you could visit Walt´s blog and find it ;)
WaltsBlog

jackinnj 30th September 2012 08:13 PM

Here, I thought i was all up to date with my 2nd edition of Audio IC OpAmp Applications (which I purchased at the McGraw Hill bookstore on Ave. Americas sometime in the 1970s)!

WaltJ 11th October 2012 03:50 PM

That old "new" regulator
 
Quote:

Originally Posted by jackinnj (Post 3185122)
AudioXpress interviews WJ in the October 2012 issue -- he describes a new shunt regulator with a cascode pair of the DN2540 depletion MOSFETs as the current source, and a PNP (D45H11) used as the shunt element for the positive.

I guess you'll have to buy the issue to see it.

Hi Jack, and to everyone else interested in that "new" regulator. It isn't really new, rather it is just an application of previously used concepts. The current source with the DN2540's has been used by many, and is simply superb in both DC and AC terms. Data on the performance is on my website.

The regulator proper is simply the "Improved" reg as cited, adapted for a PNP shunt operation.

The basic idea of this was to steer folks towards thinking more of localizing audio dynamic currents, and keeping them isolated from the rectifiers, etc. Thus, I'd encourage everyone to think of it more of an example.

Regards to all.

Walt J
PS: Kudoes to Jack Walton on his very illuminating article on regulator listening tests, in Linear Audio.
PS2: The link to the interview with this "new" reg is here.

rsavas 11th October 2012 05:14 PM

Yes, a fine book, "Audio OPAMP Applications" from my student days. Thanks for that!!
Bob C. has also talked about local regulation and the benefits, for his "Vinyl Track" Phono Pre-amp. Something that is on my Xmas wish list!!

Cheers
Rick


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