On Sat, 31 Aug 2019 at 00:23, mike brown <mike@n5qmg.com> wrote:

> That's really thinking outside the box Russell.  I never cease to be amaz=
ed
> by the things you come up with.


Some of them even work :-).*

Otoh, once the current draw goes back to
normal, couldn't this lead to oscillation as the input moves back to the
undefined behavior region?

Yes indeed. As per my comment.


> > Reduction of current drain will restore the voltages so there is a
> potential for oscillation depending on time constants.


BUT, the switching changes the configuration into a new state which may or
may not have the same high drain.
Low to high and high to low transistions have different Vin/Icc maps and it
may be (and may not) that something can be made to work.
As noted, it's a "naughty" enough idea that some work will be required to
see if it can be formalised to an extent that is acceptable as a "proper"
design.


            Russell
* Satisfaction and sorrow occurs when I see others implement independently
an idea that I've thought of previously - occasionally years before. This
proves that the idea was viable - but also means that I missed a chance,
had I cared enough :-) .

One such I am quite pleased with is the concept for a rocket-propellant
pump (very simple and obvious) that would very greatly reduce the cost of
rocket engine development in certain classes of engine. The overwhelmingly
major portion of a new engine design is the turbo-pump development. This is
almost all of the cost and they tend not to be transferable between designs
with any degree of significant difference.  The concept elimnates the
turbopump and replaces it with a stunningly obvious alternative. My "input"
was only a paragraph or two of description on a rocketry list with none of
the hard work of actually trying it. It turned out that others on the list
(Flometrics ltd) were working on exactly my "public domained' suggestion
and were horrified at my having suggested it. Better still, Lockheed Martin
had applied for a patent about 3 years before that but at that stage this
was not known publicly:-). The horrified ones now have a NASA contract to
develop demonstration motors. Lockheed Martin seems to have overlooked the
potential :-).

Flometrics 2010 report on their "Pistonless pump". you'll not find my name
in there :-)


http://www.flometrics.com/wp-content/uploads/2014/09/AIAA-2010-7131-314.pdf
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