Hi!
I found a website who are selling a products called Cascode PSU. What
is this?

After talking to the person who sell this stuff, he said that the
cascode power supply can be use for high voltage application such as
tube preamplifier B+ supply.

This is the website of Cascode PSU:
http://www.wnaudio.com/cascode.html


Also, what do you think this Cascode PSU compare to Allen Wright
SuperReg or other two shunt regulator recently I found online.

http://home.t-online.de/home/MHuber/bjtreg.htm

http://www.euronet.nl/~aespreng/Shuntregv11d/Manual.pdf

Thanks!

Wing wrote:

Hi!
I found a website who are selling a products called Cascode PSU. What
is this?

After talking to the person who sell this stuff, he said that the
cascode power supply can be use for high voltage application such as
tube preamplifier B+ supply.

This is the website of Cascode PSU:
http://www.wnaudio.com/cascode.html
[...]

You have to be careful, the author is implying that output ripple is
completely eliminated, which is not quite true. It may be greatly
reduced using the technique he describes, but in essence it merely
provides a higher open-loop gain, allowing more feedback to be applied
and therefore provide a lower ripple level.

I suppose you could use nulling techniques to get ripple down to
unmeasurable levels, but what's the point? If the goal is perfection for
its own sake, go for it. If the goal is a well-performing amplifier, it
doesn't matter.

Cheers,
Fred

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