EEVblog 1495 - Quaze Wireless Power for Gaming - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: August 18, 2022, 11:45:12 pm
content: Yes, wireless powr is BACK! And this time they are trargetting gaming rigs.Quaze want to power gaming rigs up to 500W with 15MHz resonant RF wireless desktop power. Let's take a look!https://www.quazetech.com/Demo video:Focus Demo Day:https://zumtl.com/en/news/demo-day-focus-decouvrez-la-nouvelle-cohorte-dentrepreneurs/https://www.laptopmag.com/au/features/quaze-maingearEnergous:https://liesandstartuppr.blogspot.com/2017/12/energous-it-just-keeps-getting-worse.htmlPatents:https://patents.google.com/patent/US11133714B1/https://patents.google.com/patent/US11374438B2/00:00 - Quaze desktop wireless power. We've heard this before.02:38 - Targetting the gamer market through Maingear05:49 - Laptop mag interview and demo08:41 - What's that plugpack?16:16 - Is it safe?17:08 - Zu Focus demo day video18:24 - The rules are hard coded in our mind (for a reason)20:18 - It's all thanks to gravity!22:45 - Do gamers actually need or want this?25:07 - Are you with me? Are you seeing it? No, not really.26:18 - Phone charging27:55 - Astonishing isn't it. Walls, floors, ceilings! Yeah, nah.30:37 - Unlimited potential!32:46 - A look at the patents and the efficiency numbers39:41 - Conclusion

author: woofy
author_rank: Frequent Contributor
timestamp: August 19, 2022, 10:38:36 am
content: This old chestnut has been going on for sooo long.Way back in 1989, BBC's Tomorrows World predicted getting power by sticking a "pad" anywhere on the wall.https://youtu.be/xFTPoiXU_EI?t=81

author: Schottky
author_rank: Regular Contributor
timestamp: August 19, 2022, 08:59:47 pm
content: This looks to be very similar to what EPC-Co has shown back in 2018. See the videos below which shows construction of the receiver coiland also they have this patent which shows how the transmitting coils are arranged across the surfacehttps://patents.google.com/patent/US20180269727A1/en?oq=US20180269727A1There is also another company called Metaboards that also does something similar

author: thm_w
author_rank: Super Contributor
timestamp: August 19, 2022, 09:15:58 pm
content: I see the value in keyboard/mouse/controller/laptop. I'm ok with wired mouse/kb but seems like the majority of people all want wireless.As mentioned on youtube we have:Logitech powerplay mouse:https://www.logitechg.com/en-us/products/gaming-mouse-pads/powerplay-wireless-charging.943-000109.htmlCorsair qi mouse:https://www.corsair.com/us/en/Categories/Products/Gaming-Mousepads/Wireless-Charging-Mousepads/MM1000-Qi%C2%AE-Wireless-Charging-Mouse-Pad/p/CH-9440022-NAYou might be able to DIY your own powered keyboard using one of these:https://www.aliexpress.com/item/3256803549038136.htmlIf its even worth it.Monitor makes no sense to me as you have to have a display cable anyway.Tower, they specifically don't say they will power it, so you'll have a power cable going to there.

author: SiliconWizard
author_rank: Super Contributor
timestamp: August 20, 2022, 01:04:37 am
content: Nice!Maybe they should team up with SpinLaunch though.

author: Nominal Animal
author_rank: Super Contributor
timestamp: August 20, 2022, 06:27:15 am
content: Quote from: SiliconWizard on August 20, 2022, 01:04:37 amIn the investor meeting:Good news, everyone! Our final prototype exceeded all our expectations, and achievedover-unitypower transmission!Unfortunately, the prototype was accidentally launched into the sun in an regrettable mishap when collaborating with the SpinLaunch team.Also, we lost our head of technical design and all the design documentation in an unplanned and unforeseen industrial event involving a walrus, a can of Campbell's tomato soup, and a small booklet of Eastern Philosophy, so now we are seeking an additional $100M in order to finalize this proven world-changing technology, including additional retention bonuses for the executive officers of course for reaching this important and ground-breaking milestone.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: August 20, 2022, 06:36:02 am
content: Quote from: Nominal Animal on August 20, 2022, 06:27:15 amYou forgot to mention the rainbow-farting unicorn.

author: Nominal Animal
author_rank: Super Contributor
timestamp: August 20, 2022, 08:10:17 am
content: Quote from: Ed.Kloonk on August 20, 2022, 06:36:02 amNo, you confuse the meeting with the later one, where they need an additional $250M, as the new prototype was accidentally glued to the rainbow-farting unicorn that eats blockchain technology and produces the nanoscale components used in the prototype manufacture, and it happened to eat itself and pop out of existence on our plane. The additional funds are needed to build the interdimensional gateway to recover the unicorn and the prototype.They swear they won't connect the gateway to the rich hell-beast dimension, again; extra-special protections (a neon sticker with a 3D effect of a wagging finger) have been put in place to avoid repeating that incident.

author: madires
author_rank: Super Contributor
timestamp: August 20, 2022, 07:21:15 pm
content: Quaze's demo even showed why putting their technology into floors, walls or ceilings won't work. Have you observed the jars with the LED strings? They start lighting dimly a few cm above the table.

author: nctnico
author_rank: Super Contributor
timestamp: August 20, 2022, 08:24:35 pm
content: Quote from: madires on August 20, 2022, 07:21:15 pmHaving some experience with designing wireless power myself: their system seems to be quite clever. One of the things that I'm wondering about is how they detect that a device is within range. There has to be some communication (like Qi does) between the receiver and transmitter so the transmitter can crank up the power only when there is a receiver in the field. Otherwise it will also heat up any metal object like a wrist watch or ring. This can also explain why the LEDs in the jar light up a little bit. The transmitter is always transmitting at low levels to ping potential receivers. The receivers can use the small amount of power to negotiate their required power level.

author: Marco
author_rank: Super Contributor
timestamp: August 21, 2022, 01:53:18 pm
content: What would be the limiting cost factor for giant charging surfaces, the power MOSFET per coil or the copper?

author: nctnico
author_rank: Super Contributor
timestamp: August 21, 2022, 02:37:14 pm
content: Quote from: Marco on August 21, 2022, 01:53:18 pmGood question. I'd very much like to see the inside of the transmitter to see how they constructed it.

author: Bud
author_rank: Super Contributor
timestamp: August 21, 2022, 03:57:49 pm
content: Can't wait for cats and other small house pets to become fried by 500W @15 MHz when walking on such floor and surfaces.

author: nctnico
author_rank: Super Contributor
timestamp: August 21, 2022, 04:41:45 pm
content: Quote from: Bud on August 21, 2022, 03:57:49 pmYou didn't get the part where the field is only activated when there is a receiver in sight.

author: SiliconWizard
author_rank: Super Contributor
timestamp: August 21, 2022, 08:26:05 pm
content: Quote from: nctnico on August 21, 2022, 04:41:45 pmWhat if the receiver is close to the cat?

author: nctnico
author_rank: Super Contributor
timestamp: August 21, 2022, 11:23:16 pm
content: Quote from: SiliconWizard on August 21, 2022, 08:26:05 pmFirst of all 15MHz is not going to do any harm. The levels for each coil are too low for that; it is not a microwave. Secondly, the magnetic field lines are caught up / concentrated by the receiver as this has the path of least resistance for the magnetic field.

author: twospoons
author_rank: Frequent Contributor
timestamp: August 21, 2022, 11:50:53 pm
content: That image from the patent looksremarkablysimilar to the stuff I was working on for Power by Proxi (now owned by Apple) in 2015. Here's the PbyP patent, that presumably Apple now own, EU WO 2016024869 A1. And yes, I am one of the listed inventors.I came away from that job rather unconvinced by wireless power transfer, except for a few situations where wires really couldn't be used.

author: EEVblog
author_rank: Unknown
timestamp: August 22, 2022, 04:50:12 am
content: Quote from: twospoons on August 21, 2022, 11:50:53 pmAny competent engineer who is not ideogically possesed by the idea will come to the same conclusion.

author: Bud
author_rank: Super Contributor
timestamp: August 22, 2022, 05:31:59 am
content: Quote from: nctnico on August 21, 2022, 11:23:16 pmOh yeah? I still remember as a teenager at the club station sticking my hand with a neon bulb in a 3.5Mhz antenna tuner running at 1kW or so, i still remember the burning feeling. The hand was a few inches away from the tank coil.

author: floobydust
author_rank: Super Contributor
timestamp: August 22, 2022, 07:15:35 am
content: Diathermy machines I remember an old one using a pair of 6146's that heated a person up quite well, chiropractor used it.

author: Marco
author_rank: Super Contributor
timestamp: August 22, 2022, 02:51:12 pm
content: The coils are likely backed by ferrite plates, which is another cost problem for huge surfaces. So as long as active transmission coils are always below the receiver leakage should be minimal.

author: SiliconWizard
author_rank: Super Contributor
timestamp: August 24, 2022, 07:55:27 pm
content: Quote from: floobydust on August 22, 2022, 07:15:35 amWeren't the soviets doing some weird experiments with that too?