When creating a system to wirelessly transfer power to a device (eg. a phone). Is there a usual voltage that is used during the transfer process? The battery may receive eg. 5V, but what voltage is transmitted, and what voltage is received?
This depends very much on the components and circuit design used.
If you do the design yourself, then the transmit coil terminal voltage can reach tens to hundreds of volts.
On the receive side, the induced voltage must be a bit more than the battery voltage, dependent on the voltage dropout of the charging regulator; but is generally very much coupling dependent.
/Dear Chamath-Vithanawasam
Transmitter can be of any voltage but,the receiver voltage depends on the impedance of the tuned circuit and the distance between transmitter and receiver. Power reception is inversely proportional to distance square.considering these you can design your circuit.
With regards
vasanth
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