PPR1 (positive) and NPR1* (negative) utilise a high speed and ultra low output impedance FET and guarantees peak current demands are instantly and effortlessly met. This coupled with our propriety self noise cancelling system give Invisus DC regulators outstanding resilience, reliability and performance.
Those nice words are for the Audiocom's super regulator Invisus. Anybody who knows more what's all about? I wonder also if a marketing person with or without technical insight has wrote this. Some people are good with words but what is really true and what does it mean?
There other super regulator was just a plain Sulzer regulator so I get a bit suspcious although it looked very nice.
Picture here
you can attain better noise levels with an LT431 /LM329DZ and an MJD44H11 -- for about $2.00 -- and even some of the stock Linear Tech and TI regulators will beat their advertised noise levels (and probably superior in several other aspects as well.)
Nothing is parted more quickly than a fool and his money.
Nothing is parted more quickly than a fool and his money.
Good Idea!How about a diyaudio low noise regulator design, and flogg it for serious cash ?
opamp fed from the unregulated sideBas Horneman said:By the way..what is a Sultzer regulator?
the reference is fed from the regulated side
feedback
single emitter follower as series element.
David Sulzer wrote about long time ago therefore people here call it "The Sulzer Regulator".
here is another great link http://www.alw.audio.dsl.pipex.com/dc_is_dc.htm
David Sulzer wrote in the 80's about a type of regulator (nothing new though)Bas Horneman said:Why do people say Sultzer/Jung?
Walter Jung did also write about some other kind of regulator (nothing new either).
Both Mr. Sulzer and Mr. Jung made those regulators known. As we speak we should not forget Mr. Didden who made pcb's for Mr. Jung's article.
A super regulator from 1977, Mr. Kaneda, Japan. Picture here
Anybody who have seen a super regulator before 1977?
If you use a LM317/337 these devices determines max current, 1-1,5 A but basicly the pass element set the max current.thomas997 said:Current rating of these things?
Anybody who have an idea what this may be in real life? Can it be a voltage reference with a LP-filter plus feedback and of this make those nice looking and sounding words?self noise cancelling system
an advertising term for Feedback?Anybody who have an idea what this may be in real life?
Topology is the same, but some of the actual components differ from the circuit you posted, PerAnders.
A lot of the circuits of Akihito Kaneda were published in the editions of the L'audiophile magazine in those days.
L'Audiophile sold the pcb's of the Kaneda regulator.
I'll have to dig up the mag, its been over 20 years that i did Kaneda and Hiraga stuff, i should even have a L'audiophile parts catalogue from the early 80s somewhere.
A lot of the circuits of Akihito Kaneda were published in the editions of the L'audiophile magazine in those days.
L'Audiophile sold the pcb's of the Kaneda regulator.
I'll have to dig up the mag, its been over 20 years that i did Kaneda and Hiraga stuff, i should even have a L'audiophile parts catalogue from the early 80s somewhere.
peranders said:How does your Kaneda regulator look like?
You smell another bussiness opportunity, Per? Best I keep my copy to myself...
Jan Didden
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