|
|
|
| Authored by: Ian Al on Sunday, December 02 2012 @ 02:42 AM EST |
That is a really cool invention.
Ordinary near field chargers rely on the efficiency of the magnetic coupling
between the charged and the charger.
Apple propose the transmission of radio waves that are picked up at some
distance by a tuned resonant circuit. Of course, the capacitor and inductor for
the tuned circuit at mains frequencies would be massive and very inefficient.
The radio waves would have to be at much higher frequencies.
The alternative of emulating the capacitance and inductance electronically at
mains frequencies could not handle the high Q together with the high power
required. It would, also, require at least as much electrical energy as that
received from the radio waves, which somewhat defeats the purpose.
Wait a minute... doesn't that radio waves and tuned circuits thing sound rather
familiar, somehow?
---
Regards
Ian Al
Software Patents: It's the disclosed functions in the patent, stupid![ Reply to This | Parent | # ]
|
- Yup - Authored by: Anonymous on Sunday, December 02 2012 @ 04:12 AM EST
- Oh, I see! - Authored by: Anonymous on Sunday, December 02 2012 @ 11:25 AM EST
| |
| Authored by: JamesK on Sunday, December 02 2012 @ 08:29 AM EST |
Anyone who knows anything about antennas and such will be wondering about the
efficiency of this. If it's supposed to charge things in the vicinity, then
it's radiation pattern will be something approaching omni-directional. That is
the energy is dispersed in all directions. As a result, any device will receive
only a small fraction of the energy transmitted.
---
The following program contains immature subject matter.
Viewer discretion is advised.[ Reply to This | Parent | # ]
|
- Not really - Authored by: Anonymous on Sunday, December 02 2012 @ 01:32 PM EST
|
|
|
|
