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Re: New capacitor problem



At 10:53 PM 3/31/97, Donald E. Simanek wrote:

... in charging a capacitor by
attaching it to a power supply of fixed output potential, the charge rate
isn't constant, but has an exponential dependence on time. Now if you get
yourself a constant-current-source (not at all out of the question these
days) your description would make some sense, but do your students know
about regulated current sources and regulated potential sources?
...
Dr. Donald E. Simanek

It is a very pleasing thing when a distinguished contributor to this list thinks
that under given specified circumstances, admittedly different than those he
assumes to be in effect, some description of mine might "make some sense".
This is certainly far far better than being cast down to that place where one
issues forth only unadulterated nonsense. :-)

But this discourse makes a second unwarranted assumption - that
I have students. It is necessary to say that I do not, have not, and undoubtedly
will not, other than the people who have on occasion been induced to pay an
entrance fee when I have spoken.

Having bolted from the closet in this dramatic way, let me mention that I
have found it most helpful to consider the action of that celebrated
American invention by Mr. Van der Graaff, whereby a charge sprayed onto a
resistive belt is transported (In a constant current mode) to a distinctive
high voltage electrode.
No, not out of the question, "these days". :-)

Regards
brian whatcott <inet@intellisys.net>
Altus OK