[time-nuts] Simple Super Ripple Eater

[David]

On Mon, 16 Jan 2012 12:48:24 -0500, michael taylor <mctylr at gmail.com>
wrote:

>On Mon, Jan 16, 2012 at 12:17 PM, John Lofgren <jlofgren at lsr.com> wrote:
>> There have been discussions in the past about ways to reduce regulator output noise or clean-up oscillator or voltage reference power supplies.  Here's an article from Design Ideas in Electronic Design that looks promising.  It has pretty decent rejection even at 1 Hz.
>>
>> http://electronicdesign.com/article/power/Simple-Super-Ripple-Eater-Also-Cleans-Battery-Based-Supply.aspx
>
>Am I wrong in assuming this is a similar to a circuit mentioned in
>time-nuts in the past in regards to voltage regulator noise, "Finesse
>Voltage Regulator Noise!" from Wenzel Associates?
><http://www.wenzel.com/documents/finesse.html>

It is a series configuration instead of a shunt configuration.  They
both accomplish the same thing but in different ways.  The Wenzel
design requires gain matching but should be unconditionally stable.