art wrote:
On 19 Oct, 03:55, "Dave" wrote:
"art" wrote in message

oups.com...

Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG
it turns around and goes right back down the way it came.

So a electrical generater doesn't keep turning in one direction
but instead it occillates at the desired frequency.
I have never seen one do that!
And "end effect" is the confusion created at the top of the radiator


I don't have to be an engineer to question this one. An electrical
"generator" does indeed keep turning in a single direction. It has
brushes and split commutator rings to keep the current flowing in only
one direction. That is in the very nature of a "generator." The device
I suspect that you are alluding to is an "alternator" in which a
magnetic field is rotated through a coil of wire and passes through both
halves of the coil at the same time. Since in a well designed, single
phase alternator the center of the magnetic field and the center of the
coil of wire are coincident the current does indeed alternate because
unlike a generator the alternator does not include any means of flopping
the connections on the coil in time with the magnetic field. So as the
negative and positive fields of the magnet pass through each half of the
coil of wire in turn the current reverses direction.
--
Tom Horne, W3TDH