Wireless power transfer

[Electric-T]

So this ia a pretty cool concept. I realise its not brand new but short of a tesla coil i haven't seen it in the world much. (Unless you count wireless headphones. I dont)

Im thinking of a design. I want to charge a cell phone wirelessly. I dont want to do it tesla style though haha.

Anyone mess around with WPT before?

 

[(*steve*)]

My toothbrush does.

 

[AnalogKid]

I don't know what you mean by tesla style. Wireless charging is basically an air-core transformer. Wireless phone charging now is so common that there is an international standard so different manufacturers devices work together.

https://en.wikipedia.org/wiki/Inductive_charging
https://en.wikipedia.org/wiki/Qi_(standard)

ak

 

[Electric-T]

I don't know what you mean by tesla style. Wireless charging is basically an air-core transformer. Wireless phone charging now is so common that there is an international standard so different manufacturers devices work together.

https://en.wikipedia.org/wiki/Inductive_charging
https://en.wikipedia.org/wiki/Qi_(standard)

ak

By tesla style i mean tesla coil style. Arcing visibly through the air to a receiver. Sounds dangerous

 

[AnalogKid]

By tesla style i mean tesla coil style. Arcing visibly through the air to a receiver. Sounds dangerous

N.o. o.n e. does wireless charging that way.

ak

 

[Electric-T]

Yeah that wouldnt be too attractive to the people huh haha.
Well i guess im going to do some research and look at some schematics if i can find some.

 

[Audioguru]

The transmitting coil and the receiving coils must be touching each other or almost touching.
Wireless headphones transmit infrared or radio signals not power and get the power for their receiver from a battery.

 

[Electric-T]

The transmitting coil and the receiving coils must be touching each other or almost touching.
Wireless headphones transmit infrared or radio signals not power and get the power for their receiver from a battey

Well thats unfortunate. But not completely discouraging. And yes i was thinking of radio signals as power. A tiny amount of power

 

[Audioguru]

A radio picks up a tiny amount of the massive transmitted power. But the radio still needs a battery or power supply to operate its circuit.

 

[Electric-T]

A radio picks up a tiny amount of the massive transmitted power. But the radio still needs a battery or power supply to operate its circuit.

True. Well I guess the tech isnt quite there.

 

[(*steve*)]

Crystal radios (and their modern equivalent, the RFID tag) are not exactly new tech.

The problem is what you can do with a small amount of power, or conversely, how you can get an appreciable amount of power wirelessly.