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Overunity Machines Forum



Successful Akula 30 Watts Free Energy device Solid State Replication

Started by hartiberlin, May 18, 2014, 09:17:25 AM

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citfta

Quote from: verpies on April 04, 2017, 04:39:37 PM
Since when is core loss measured in Ohm's ?

That's easy to answer.  When you get your education from DumbTube.

Theoretical Research

Quote from: verpies on April 04, 2017, 04:39:37 PM
Since when is core loss measured in Ohm's ?
I'm referring to the loss in the core due to resistance caused by magnetic viscosity and wire resistance. If you place a cap in series with the core at resonance you can measure this resistance. Does that help?

Theoretical Research

Quote from: citfta on April 04, 2017, 05:09:08 PM
That's easy to answer.  When you get your education from DumbTube.
Haha good one. My usage of the word "loss" was a grammatical description, not a factor or unit of measurement such as "loss factor."

verpies

Quote from: Theoretical Research on April 04, 2017, 05:45:02 PM
I'm referring to the loss in the core due to resistance caused by magnetic viscosity and wire resistance. If you place a cap in series with the core at resonance you can measure this resistance. Does that help?
A little, because the loss of energy in the winding's resistance is a separate phenomenon from the loss of energy in the core, which is a separate component of an inductor or a transformer (...and an optional one at that).

Note, that I am only guessing that you mean energy loss or more precisely the undesirable conversion of other forms of energy to heat.

FYI: core loss is measured in J/kg per cycle or J/m3 per cycle.  The loss of energy in a wire's resistance is called Joule heating and is equal to i2R so it is a function of current as well as resistance.

Theoretical Research

I'm fully aware of that. I use spice sims extensively prior to building most of my circuits. Spice needs  to know resistance.

I'm not going to get into the physics of this tech, yet, but it's very difficult to build a self-runner unless one uses low loss cores. Anyhow I just thought it would be more meaningful to people to specify resistance, which causes loss. It's the parameter I would be prefer to see.

Additionally it helps to know the cores Z, X, and R curve. The core I showed in photo is fairly linear up to at least 11MHz with respect to R. IOW, twice the frequency will double R. Although to my surprise it appears to have a "sweet spot" around 330KHz where R is significantly less.