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Caduceus Coil

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LAN_403

Sun Dec 31 2006, 11:50PM

Banned on April 7, 2007
Registered Member #277 Joined: Fri Mar 03 2006, 10:15AM
Location: Florida
Posts: 157

On the topic of "caduceus coil", anyone have experience building/testing them in the application of reducing HV pulses to LV? If so, your input here is invited. I am not interested in nutty discusssions of "over-unity" some have attributed to this style coil, I am only interested in applications of reducing HV pulses to LV. Below is one url about caduceus coil, or you can Google it, beware, there are some wild claims out there made about this style coil, so let's stick to hard science please. I don't wind coils too well, so even better would be someone telling me where I could purchase a caduceus coil (or pay for custom fabrication) for voltage reduction testing. CM

Marko

Mon Jan 01 2007, 01:04AM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

You generally aren't recommended to link to JLN's site at all if you wish to be got seriously.

Caduceus coil practically consists of two coils wound in opposite directions. THeir magnetic fields cancel out and so most of inductance is eliminated.

Magic ends there.

Mon Jan 01 2007, 01:58AM

Banned on April 7, 2007
Registered Member #277 Joined: Fri Mar 03 2006, 10:15AM
Location: Florida
Posts: 157

Sorry, I must've over-looked the list of sites we're not suppose to mention, silly me. Tell me where it is so I can familarize myself with it. In the meantime, I changed the link to another for you, it describes the Caduceus coil too (some sites refer to it as a bifilar coil). CM

...

Mon Jan 01 2007, 03:22AM

Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445

If I am not mistaken, the coil (assuming it is well constructed) would act as a low value resistor... Which won't do your stepping a voltage down very well...

Bjørn

Mon Jan 01 2007, 05:54AM

Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058

Sorry, I must've over-looked the list of sites we're not suppose to mention

There is no such list but we have this rule:
I. Free energy, electrogravitics, and all other types of pseudoscience are not allowed on any part of this site, nor are links to sites that deal primarily with these subjects.

The JLN site is known to contain parts that are complete nonsense pretending to be science.

Steve Conner

Mon Jan 01 2007, 03:31PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

CM, there is no list of sites you're not supposed to mention, as such. But if you look for information about caduceus coils on the net, you'll find that people claim to use them as antennas for transmitting and receiving "scalar waves". If you don't know what scalar waves are, you probably don't want to know. Suffice it to say that some people believe that EM waves can propagate in other ways besides the usual ones described by Maxwell's equations. Their argument is that the winding of the caduceus coil cancels out all the "ordinary" EM waves and leaves only the scalar ones. They are also called "longitudinal" or "non-Hertzian" waves.

Our official stand on this is that it's complete junk science and that scalar waves don't exist. This is also the view held by the vast majority of the scientific establishment, so no surprises there! We don't really allow discussion on the matter either, unless you think you've devised a real scientific experiment that would make the theory of scalar waves testable. But that is really out of our league, you should go and tell it to some peer-reviewed physics journals and the Nobel prize commitee

If you look at it from the viewpoint of established science, a caduceus coil is just a really lossy and bad inductor. (Or a low-value resistor like firkragg suggested

) In a circuit that needs an inductor, you would get much better performance by taking the same length and gauge of wire and winding it into a normal shaped coil, maybe on a magnetic core.

Coronafix

Tue Jan 02 2007, 12:22AM

Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938

They also call them Tesla waves, as he was the first to discover them.
Whether they exist or not!

Steve Conner

Tue Jan 02 2007, 12:25AM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

They don't. Tesla was wrong, end of story.

Conundrum

Tue Jan 02 2007, 12:27AM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

I've seen something similar inside a GPS receiver for a radiosonde, presumably has to do with balancing the RF inputs to get a steady output to the GPS chipset.

-A

Marko

Tue Jan 02 2007, 03:25PM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

Oh; not to confuse bifilar and caduceus coils:

Bifilar is any coil wound with two windings, regardless direction. Multifilar coils (all windings in same direction) are often used in high frequency electronics to increase surface area and Q of the coil.

Caduceus is exclusively a coil wound with two windings in opposite directions.

Ideally, such a coil has no inductance at all, and approach is actually used where it is desirable to eliminate inductance (wire wound resistors, for example).

Although I still don't see how would anything of these help your idea about ''reducing HV pulses to LV''.

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