i dont know if its possible...

[jenr015]

is it possible?

A device that charges any electronic gadget (i.e. laptop, cellphone etc...) without using any wires? my idea is transmitting the voltage in free space, then the gadget has a certain receiver of the said voltage.. it doesn't have to be in a long range, even if i place it side by side with each other... I'm just curious if it is possible in any sense? ha ha, I don't know if its feasible or ridiculous.

 

[jenr015]

lol.. my question been answered by another thread.. moral lesson: read first before you ask. lol ha ha ha

 

[MikeMl]

Mostly not practical. I have worked on an inductive coupling system to transfer power through the human chest wall to power permanently implanted artificial organs, including a system capable of passing about 25W. At that power level, the coils need to be large compared to the gap between them; about 12" dia for a gap of ~2" Not light, small, or very efficient. Power lost vs Power transferred: about 4:1, i.e. efficiency of 25%

 

[jenr015]

hmmm.... but i have read about frequency to dc voltage converters... i thought maybe it is possible... how about dealing with much smaller gadgets that consumes super less power???

 

[marcbarker]

i have read about frequency to dc voltage converters...

An F-to-V converter is powered from a source of DC voltage. This circuit will output a proportion of that input DC power as an output voltage, according to an input frequency which controls it.

 

[xtrmi]

My tooth brush charges this way.

 

[Ghosty_Ghoul]

It's possible but not very efficient.

In fact this kind of technology was invented by Tesla over 100 years ago.