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crwdns2933797:0Alex Barnescrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Andrew Optimus Goldheart
- crwdns2933769:0crwdne2933769:0
- crwdns2933771:0crwdne2933771:0
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crwdns2933807:0crwdne2933807:0
| [* black] Let's play "Is it Magnetic?". The rules are pretty much self-explanatory. | |
| [* black] Would you look at that, it's magnetic. We suspect that the charging coil's sticker backing works like a [http://en.wikipedia.org/wiki/Transformer#Cores|transformer core|new_window=true], made of up ferrous material that "serves to greatly reduce the magnetizing current and confine the flux to a path which closely couples the windings." | |
| [* black] Tl;DR: we're thinking this sticker improves the inductive charging efficiency. | |
| [* icon_note] [https://www.ifixit.com/User/309817/David+Wei|David] clears things up for us: | |
| - | [* black] "It is most likely a shielding for the main circuit board. When you are focusing a lot of energy through space, you cannot guarantee it will all end up on the receiver coil. Therefore you will need a shield to absorb any |
| + | [* black] "It is most likely a shielding for the main circuit board. When you are focusing a lot of energy through space, you cannot guarantee it will all end up on the receiver coil. Therefore you will need a shield to absorb any stray energy. Just think, if a wire just happens to be the perfect shape to receive energy, it will likely cook the circuit." |