Rotational symmetry :) EDIT: Wait no the paper! Arrrgh
WaterWaiver
joined 2 years ago
It's 50 bucks though. Too expensive of a date for me.
In the picture are 3 coiled wires, all sharing the same dark grey ring/toroid (but it looks yellow because it is wrapped in yellow kapton tape).
If you try and send the same signal through each of these 3 wires then they will all fight and cancel each other out (a bit like 3 people trying to through the same narrow doorway at the exact same time; no-one gets through). If the signals are different on each wire then they will get through fine (a bit like people going through a door at different times).
common mode chokes = choke/kill the signals that are common/same on all wires
You typically do not want common mode signals to exit your device and travel along cables, because then these cables act like radio transmitters. The exact reasoning for that is a bit more than I want to write here, but it's best explained with some pictures and phrases like "you turned your cable into a monopole you doof, use more common mode chokes and think of England".
Internally these devices work using magnetic fields in the dark-grey (ferrite) ring. I'm more familiar with 2-wire chokes where the coils are wound in opposite directions (so the magnetic fields they make cancel out), I am not sure how it works for 3 windings.
Microchannel coils: Wow. I assumed the pressures were too high for such construction to succeed. Thankyou :)
Fluid metering: I was aware of TXVs and capillary tubes, but not reverse bypass piston inserts. Would these options only be a few dollars difference in BOM price between each other? I guess the extra labour from soldering more pipes and connections for a TXV might be more costly than the extra materials themselves.
A vs N folded coils: interesting. I have mostly seen split systems and their unfolded coils, not central AC units with these A & N folded coils.
heat pumps instead of traditional compressor based ac systems
Heat pumps are compressor based systems. They are the same technology.
In addition to advances in fin design and compressor and motor efficiency and materials
This reads lot like an answer from an LLM. Did you use one? My apologies if not, but you sound very suspicious.
Definitely. Absolute scams. They deserve the "0 energy stars" ratings I've seen printed on their boxes.
My family bought one of those for one of my grandparents. On a 35degC day it was only able to cool the room by a few degrees and it was still humid inside.
Converting them into dual-hose systems would be so simple (almost free) to the manufacturer, but instead they rely on deceiving buyers with a promise of something that is not delivered.
then had lunch with the judge during deliberations where we chatted about how stupid the case was.
I suspect they might see it as their duty to point out legal stupidity; if only just so that the jurors are not given a bad impression of the whole legal system.
Interesting. I sounds like they might start with more than 10 jurors then, just in case.
Do they let a juror back in if they're off sick for a day? I wonder what the threshold is?
I love the "asked the court clerks for painkillers" xD The judge was probably stepping in to avoid a repeat of the episode where clerks gave the jury opiates.
Ty for your story. Interesting to see them that accommodating.
Not a creeping fig, I sleep.
I love seeing trees in commercial rooves. All the joy and less guilt at not telling someone about it >:D
!?!?! Aussie.zone says this was posted "12 hours ago", how did I miss this major development all day?
Oh. -_-
Would it be possible to edit this article to point to the archive.org link, then create a new post for the new news? Not sure if you want to at this point, you're probably sick of this roundabout. Thankyou for sharing it all.
I just realised how hard it would be to manufacture this thing.
Imagine having to bend those copper wires into that shape around an already-existing toroid ring. Or maybe they glue together a few pieces of ring?