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wireless power transmission

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abdullah65

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i need a circuit that will charge a 4v battery from 220v main through wireless power transmission.. also want to know its working principle..plz help.
 

abdullah65 said:
i need a circuit that will charge a 4v battery from 220v main through wireless power transmission.. also want to know its working principle..plz help.
Click to expand...

Please watch this website:
**broken link removed**
And read about "WREL" Maybe it help you understand, how send supply power by wireless
 
How much distance?
Maximum size of transmitter/receiver coil?
How much power?
efficiency requirements?
reverse signalling (from battery to wireless charger)?
etc.
 
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