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This method uses magnetic resonant coupling (vs inductive which is how wireless charging works on your phone). The difference is the transmitter and receiver are both tuned LC circuits that operate at their resonant frequency, which is why this works over the impressive range shown in the video. It would have efficiencies around 80% mark based on what I could find. But yeah for RFI, this would definitely be worse than something like normal Qi charging, which operates in the 100s of KHz, while this operates in the MHz. But I think the manufacturers page says this is FCC certified? So might be not too bad.
My speakers at home hum due to my Logitech Powerplay Matt, even with a ground loop isolator. It sucks. I was kinda surprised that it wasn’t an issue with this setup.
Wireless power sounds like and RFI nightmare. It will never match the efficiency of a cable either.
Efficiency and outright performance isn’t always a priority.
A lan cable outperforms a wireless Internet connection in every way, yet most people just use WiFi
Sure, but I’m not paying for every byte sent overy network, while I am paying for every kWh I use.
That’s all beside the point though, this is just a fun diy project so who cares really.
I could argue that WiFi uses more power than LAN cables, so you’re paying to use WiFi
The important thing is if it’s worth the price, paying 5$ extra per month in power might be worth it for a LOT of people
This method uses magnetic resonant coupling (vs inductive which is how wireless charging works on your phone). The difference is the transmitter and receiver are both tuned LC circuits that operate at their resonant frequency, which is why this works over the impressive range shown in the video. It would have efficiencies around 80% mark based on what I could find. But yeah for RFI, this would definitely be worse than something like normal Qi charging, which operates in the 100s of KHz, while this operates in the MHz. But I think the manufacturers page says this is FCC certified? So might be not too bad.
FCC emission requirements are very lax below 30MHz, so something can pass FCC part 15 yet still jam the entire HF band.
I doubt anyone is under the impression that it is going to be as efficient as direct power. At least no one paying attention.
Edit: The downvotes lead me to believe a not insignificant number of people don’t understand how energy works.
Downvotes be damned: you’re right, imo. A wire just has less to worry about, and I’m sure most people would think the same. Most people.
You’re also skipping two energy conversions by keeping it in the wire
The number of people electrocuting themselves doing stupid stuff leads me to believe this, but these downvotes help solidify that lol
My speakers at home hum due to my Logitech Powerplay Matt, even with a ground loop isolator. It sucks. I was kinda surprised that it wasn’t an issue with this setup.
I was actually surprised the Bluetooth keyboard and mouse still worked.