Grounding
- Thread starter jasbirnandra
- Start date
You probably need to read this.
https://www.quora.com/What-is-geomagnetic-sight
I'll take a stab at this as Per appears not to be willing to divulge his secrets. If I get it wrong, well he can continue not to divulge his secrets.
You have the box, you have magnetite (maybe), you have flat plates, you have electric fields and not hard to imagine(emphasis on this word) the granular stuff is piezoelectric.
Okay, so noxious noise rides along the Eartha cable, into the plates in the box. The plates resonate with this noise, which squeezes the plates back and forth which squeezes the granules back and forth which is easily pictured as piezoelectric crystalline action. Spacing of the plates and etc (sorry redacted info here), are tuned for best effect. You simultaneously have vibration from the sound of the speakers. That will at least at lower frequencies also move the plates created a reverse polarity piezo effect. This will cancel out the music signal allowing the remaining noise to be absorbed by the magnetite. That is why sometimes the Entreq measurements show good effect at lower mains frequencies and less good at higher frequencies. The higher sound frequencies don't make it into the box to activate the plates ability to create piezo filtering to full effect. All makes plenty of sense.
No it doesn't. No noise will ever go upstream to the box. The only noise it can have any affect on is what's in the air around it. That is exactly why most people with an knowledge of electronics first look at it as if it were an antenna.
A low inductance grounding reference could be made with a single inductor taken apart. Just find the best way to get good surface area contact to each appliance, and find a way to get compression on it for conductivity. Perhaps make a few holes through it and screw it onto the appliance with existing screws.
You can then skip the bus bar, actually, and what you do is make each leg long enough that you fold them over onto themselves a few times. Now clamp it, and drill two holes through it. Run bolts through and then compress it with a nut and a lock washer.
And realize then that it won't do what the Entreq's do.... but it might do something nice.
What do you not understand? If you try to ask a question, maybe you can be helped?
Except it has already been reported that people with good chassis-grounding solutions still benefited from having a purported 'signal' 'grounding' box...
NB: the Entreq manufacturer says his device deals with 'high frequency' noise IIRC.
That seems a convoluted explanation. The sound coming from the speakers isn't a given variable as it depends where you install the box, room characteristics and so on.
You would have to start with the correct definition for return currents and how they propagate here.
It does, by trying not to absorb it. As far as removing it from the system it would appear impossible. No noise will go from the appliance to the box, and the appliances themselves don't radiate much in the RF spectrum.
Low frequencies are hard to absorb or block. Anywhere in your room they will get thru a box that size. Have you listened to it in a way that allows you to say it isn't so?
Fascinating
. Thanks els, honestly, I couldn't attempt to write comic fiction that good. Much appreciated laugh at the end of long week. So we have a vibration transducer modulating your signal ground. Really not a good idea (assuming you apply any credence to it.)
Btw I use piezo vibration transducers everyday. I'd love to see what level of charge you would get out of the box.
I'm fascinated as to why people all suddenly think they have system noise problems to solve and why they don't think the normal low impedance cable screen is suddenly totally ineffective and additional parallel wiring is required
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Not too sure what you mean by that.
According to PO, it does.
'don't radiate much' doesn't mean they don't, and doesn't mean the little they do doesn't have an effect on the signal.
Besides, what if the HF content is not directly being generated by the appliance itself?
Really? Ever heard of bass traps?
I've built my own, but that wasn't the point. The point was to try to understand what it does, try to get the simplified model first before adding more variables which are not necessarily a given.
......and we should take the word of someone who described himself as a farmer as opposed to electrical/electronic engineer?
Someone who is totally unwilling to discuss the technicalities of the box?
That's a serious question BTW, no attempt to denigrate the guy, I would just like to understand his expertise and experience in the area
YashN you're simply trolling at this point.
I'm not sure what "PO" stands for but no one on the face of this earth that knows much about electronics would ever believe noise goes to the box from the appliance. NO ONE. But please start calling every professor in the known world for electronics and try to get a different opinion.
I'm not sure what "PO" stands for but no one on the face of this earth that knows much about electronics would ever believe noise goes to the box from the appliance. NO ONE. But please start calling every professor in the known world for electronics and try to get a different opinion.
PO - Per-Olof Friberg, Chief Designer and CEO of Entreq
Apparently he describes himself as a farmer. He got a bit upset on the other thread when people started technically examining the product.
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He is afraid that people will steal more of his ideas than they already have. That sucks. But it seems to happen to everyone. Courts are *$#%& on that. Also I respect him saying people shouldn't get so abrasive towards the people that own the product and like it. In no way do I think it surely does nothing. But that's no excuse to accept absolute non-sense. My only real thought is either it does what I think, or it needs more investigation.
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