To Fuse or Not to Fuse... That is the question!

You are confused because GK keeps parroting that the energy is only conveyed from source to load, hence the fact it is AC makes no difference as the energy is unidirectional (even though current is bidirectional)l, and uses this as a justification for fuse directionality.

"You can ignore the current traveling in the direction away from the speakers, I.e., toward the wall, since that direction of current flow is not (rpt not) audible."

The first statement about energy transfer direction is correct, as the energy flows towards the load along the Poynting vector. The second statement is not correct. It sounds right based on the first statement but it is not.

What GK fails to realize is that the Poynting vector is the spacially integrated cross-product of the E (electric) and B (magnetic) fields, over the WHOLE circuit, and that everywhere current is flowing (in a wire), there are E and B fields, meaning that EVERYWHERE current flows impacts the Poynting vector. If you didn’t have current flowing both towards the speakers AND away from the speakers, you wouldn’t have E and B fields and you wouldn’t have a Poynting vector and you wouldn’t have energy transfer from the source to the load. The current traveling to the speakers and away from the speakers are equally important in defining the Poynting vector.

At a macro level, the Poynting vector is the same for both polarities of the AC signal, as the E-field is structurally the same, but as opposed to that justifying that the fuse is "directional", the opposite is true.

roberttcan182 posts10-25-2019 6:44pmYou are confused because GK keeps parroting that the energy is only conveyed from source to load, hence the fact it is AC makes no difference as the energy is unidirectional (even though current is bidirectional)l, and uses this as a justification for fuse directionality.


>>>>There you go again putting words in my mouth, Mr. Marty Pants 👖. I never said any such thing. Maybe you should try keeping a log. In fact what I said somewhere along the line is that energy is a scalar quantity, which means it has no direction. Follow?

The german physicist Max Planck said that science advances one funeral at a time. Or more precisely:"A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it."

Ladies and germs, meet the new fuse generation.

All the best,
Nonoise

Appeal to bandwagon.

Let me know how that homeopathic cancer treatment works (huge apologies if you actually have cancer, this is an analogy, not a personal attack of that nature). Sales in the U.S. alone of Homeopathy products that do exactly nothing is near $450 Million. Far more than audio cables and fuses.

Do you know how many residential customers in the U.S. get sucked into buying over-priced whole home PFC products (nothing more than capacitors in a box) because someone convinced them they would save huge money on their electricity bills ... even though all residential in the US is billed for real-power only?

Is that 100,000 figure from Ted Denney?  If so, I am skeptical of that number. He also claims $10 million/year in sales. I am sure you have seen his factory tour videos? Relatively small staff and not high priced professionals. Almost no expensive equipment to pay for (so what is the real R&D overhead). Given the manufacturing margins, at $10 mil/year, they should be generating serious cash flow. Ted does not live a serious cash flow life.


geoffkait17,729 posts10-25-2019 6:14pm100,000 fancy fuses sold to date so it looks like it’s you against the world Mr. Smarty Pants 👖and looking into my crystal ball I you can probably add at least another 50,000 for the new 🍊 fuse. Snooze, you lose. 😴 By the way you didn’t interpret the data correctly. Your humble narrator did, though. 🤗 Be that as it may, as I said there really isn’t any debate any more. But you’re welcome to carry on.🕺🏻 You aren’t the only stubborn mossback in town.

The number of 100,000 fancy fuses is a composite across the top three fuse companies. I prefer not to divulge my sources. You need to work on your batting average. 

- your humble narrator and consummate Audio Insider