Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #391   Report Post  
Old February 12th 04, 04:22 AM
Cecil Moore
 
Posts: n/a
Default

Dr. Slick wrote:
Kinda like how you imagine you are saying something important
or intelligent!


Makes one wonder why something so unimportant is worth the energy
you expend in arguing about it. :-) Sure seems to me that dQ/dt
is negative for 1/2 half of an AC cycle.
--
73, Cecil http://www.qsl.net/w5dxp



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
  #392   Report Post  
Old February 12th 04, 08:03 PM
Jim Kelley
 
Posts: n/a
Default

Cecil Moore wrote:
Sure seems to me that dQ/dt
is negative for 1/2 half of an AC cycle.


So then according to Shriners convention, AC would be flowing away from
the load and sloshing up against the source? (hic)

:-)

73 de ac6xg
  #393   Report Post  
Old February 12th 04, 08:52 PM
Cecil Moore
 
Posts: n/a
Default

Jim Kelley wrote:
Cecil Moore wrote:

Sure seems to me that dQ/dt
is negative for 1/2 half of an AC cycle.


So then according to Shriners convention, AC would be flowing away from
the load and sloshing up against the source? (hic)


Not sloshing up against the source - forced back through the
source and out the other source terminal (just like a battery).
Do you understand what happens when you reverse the polarity
of a battery in a DC circuit? Current flows in the opposite
direction. AC is somewhat similar to reversing the DC battery
polarity.

In any one AC supply wire, AC current flows away from the
load toward the source 1/2 of the time. Electrons flow back and
forth through the source. Electrons flow back and forth through
the load. The electrons near the source may never make it to the
RF load and vice versa. The driving EMF changes directions every
1/2 cycle.

It appears that the DC model adapted for AC has seduced a lot of
people into ignoring the most basic characteristics of an AC signal
which is somewhat like reversing the polarity on a DC battery.
--
73, Cecil, W5DXP

  #394   Report Post  
Old February 12th 04, 09:03 PM
Dr. Slick
 
Posts: n/a
Default

Cecil Moore wrote in message ...
Dr. Slick wrote:
Kinda like how you imagine you are saying something important
or intelligent!


Makes one wonder why something so unimportant is worth the energy
you expend in arguing about it. :-) Sure seems to me that dQ/dt
is negative for 1/2 half of an AC cycle.



I think every so often, it's important to point out how
full of sh** Cecil Moore really is...


S.
  #395   Report Post  
Old February 12th 04, 09:18 PM
Jim Kelley
 
Posts: n/a
Default



Cecil Moore wrote:
It appears that the DC model adapted for AC has seduced a lot of
people into ignoring the most basic characteristics of an AC signal
which is somewhat like reversing the polarity on a DC battery.


Cecil, OM. The point you so hard-headedly and steadfastly refuse to
acknowledge is that YOU are the one trying to employ a "DC model" when
describing alternating current. AC doesn't go into one end of something
and then come out the other end of that thing. If you would simply
acknowledge that fact then maybe we wouldn't have to endure any more of
your 2nd Grade electricity tutorials.

Okay?

73 de AC6XG


  #396   Report Post  
Old February 12th 04, 09:26 PM
Cecil Moore
 
Posts: n/a
Default

Dr. Slick wrote:
I think every so often, it's important to point out how
full of sh** Cecil Moore really is...


When you cannot present a rational argument, mount an ad
hominem attack? What is it that you disagree with me about?
Do you think AC current doesn't reverse direction every 1/2
cycle?
--
73, Cecil, W5DXP

  #397   Report Post  
Old February 12th 04, 10:11 PM
Cecil Moore
 
Posts: n/a
Default

Jim Kelley wrote:

Cecil Moore wrote:
It appears that the DC model adapted for AC has seduced a lot of
people into ignoring the most basic characteristics of an AC signal
which is somewhat like reversing the polarity on a DC battery.


Cecil, OM. The point you so hard-headedly and steadfastly refuse to
acknowledge is that YOU are the one trying to employ a "DC model" when
describing alternating current. AC doesn't go into one end of something
and then come out the other end of that thing. If you would simply
acknowledge that fact then maybe we wouldn't have to endure any more of
your 2nd Grade electricity tutorials.


Here's a snapshot of the current maximum points, including direction of
current flow, in a 2 WL matched transmission line. The next snapshot is
the same thing 1/2 cycle later. Note: Current is going into the bottom
of the source and coming out of the top. Same for the load.

*----------------------*
| |
Source Load
| |
*----------------------*



*----------------------*
| |
Source Load
| |
*----------------------*

1/2 cycle later: Current is flowing out of the bottom and into the top
of the source. Same for the load.

The transmission line is 2 wavelengths long. That means that instantaneous
current in the transmission line is simultaneously flowing toward the load
and toward the source at different points up and down the line.

AC is akin to reversing the polarity of a battery. What happens to the
direction of current flow through the load when the polarity of a
battery is reversed? Don't you realize that if current is flowing out
of the '+' terminal of a battery, that same current is flowing into the
'-' terminal?
--
73, Cecil, W5DXP

  #398   Report Post  
Old February 12th 04, 10:13 PM
Yuri Blanarovich
 
Posts: n/a
Default

AC doesn't go into one end of something
and then come out the other end of that thing. If you would simply
acknowledge that fact then maybe we wouldn't have to endure any more of
your 2nd Grade electricity tutorials.

Okay?

73 de AC6XG


So when I plug my toaster into the AC outlet the current doesn't go into one
end? The same with transmitter and antenna?

Live and learn (garbage)?

Yuri
  #399   Report Post  
Old February 12th 04, 10:18 PM
Jim Kelley
 
Posts: n/a
Default



Cecil Moore wrote:

Don't you realize that if current is flowing out
of the '+' terminal of a battery, that same current is flowing into the
'-' terminal?


Everybody realizes that Cecil. You don't need to explain. You need to
understand.

Thanks though.

73, Jim AC6XG
  #400   Report Post  
Old February 12th 04, 10:31 PM
Jim Kelley
 
Posts: n/a
Default



Yuri Blanarovich wrote:
So when I plug my toaster into the AC outlet the current doesn't go into one
end?


Have you got standing waves on your toaster, Yuri?

73, Jim AC6XG
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
current/inductance discusion Art Unwin KB9MZ Antenna 54 January 4th 04 07:08 PM
A Subtle Detail of Reflection Coefficients (but important to know) Dr. Slick Antenna 199 September 12th 03 10:06 PM
Eznec modeling loading coils? Roy Lewallen Antenna 11 August 18th 03 02:40 AM


All times are GMT +1. The time now is 09:38 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017