The obsession of the internet folks with "wireless power" is ridiculous.
I think wireless charging is inefficient, isn't it? Does your tooth brush or charger get warm when it charges?
@Pat @cweickhmann Not really, because it's not a lot of power needed for charging a toothbrush.
Besides, for in a bathroom an induction charger is great because of less danger of electric shock, so that's a great reason to have one there.
That makes sense for that safety reason, but my understanding is that it works like a transformer, except the primary and secondary are in separeate units. And a transformer is inefficient.
There is also a way to transmit power via RF, usually microwaves, but I think that's inefficient, too.
@Pat @cweickhmann Yup, it's indeed inefficient. That's why you usually find it in spots that's actually safer with this.
@trinsec @Pat I was actually not referring to induction charging which has its obvious use cases especially in a potentially wet/corrosive environment. I'm not talking about induction heating either (that's actually very efficient).
What I was referring to is the obsession with Nikola Tesla-style "wireless power" instead of HV wires.
But generally as a rule of thumb: Wireless is never very directive, ie. it works great in very short distances. The longer you need to go, the more you spill. End of story.
>"What I was referring to is the obsession with Nikola Tesla-style "wireless power" instead of HV wires."
Yeah, I don't understand why people get these conspiratorial ideas -- like the power utilities wouldn't be all over that if it was true.
I just thought of another way to transmit power through the air. Just ionize the air molecules so that air becomes conductive -- lightning.
@cweickhmann When I was a little kid, we had an electric toothbrush that you had to plug in... so um, yeah, let's embrace the induction charging here. ;)
Don't tell me, the toothbrush was made of metal, right?
@Pat @cweickhmann Oh, no, it was made of bakelite. But my mom always told me to be careful with that thing, I couldn't use it unsupervised. I'm glad times changed.
This is Mur 
@Pat @trinsec @cweickhmann
I have never seen a toothbrush made of metal irrespective of electric or not
>"I have never seen a toothbrush made of metal irrespective of electric or not"
Neither have I. I was trying to make a joke, but it fell flat.
@Pat It just rubbed the wrong way, I guess.
@mur2501 @cweickhmann
I don't mean to brush you off. You each had the same reaction, so it must have been my joke.
@trinsec @cweickhmann @Pat
240V 60Hz brushing leads to the whitest teeths
@mur2501 I bet not only the teeth. 😂
>"240V 60Hz brushing leads to the whitest teeths"
I'm getting my home wired for 400V 3-phase so I can have the brightest teeth.
Now I just need to find a 400V electric toothbrush.
@cweickhmann My electric toothbrush has one!