Wireless power transmission - Electronic Circuits Projects Diagrams Free

Badar · 15th April 2007, 08:11 PM

Hi.
I happened to read a magzine of electronics may be EVERYDAY PRACTICAL ELECTRONICS.There was an add of an extension board so that we could power our appliances through that extension board having no cords.
How is this possible? If it is possible what method might have been used.

Sceadwian · 15th April 2007, 08:25 PM

With large amounts of power it's not possible. All wireless power transfer methods are essentially inductivly coupled for short distances or RF based, they waste exponentially increasing amounts of power as the distance increases.

on1aag · 15th April 2007, 08:33 PM

Hi Badar,

I have one question, was it the april issue ?

on1aag.

Analog · 10th June 2007, 12:41 PM

http://www.physorg.com/news100445957.html

Leftyretro · 10th June 2007, 05:52 PM

I think that the RFID tags use the RF field generated by the reader to generate the DC power needed to activate the RFID card. Low power of course but it is a working tech....

Lefty

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15th April 2007, 08:11 PM	(permalink)
Badar	Wireless power transmission Hi. I happened to read a magzine of electronics may be EVERYDAY PRACTICAL ELECTRONICS.There was an add of an extension board so that we could power our appliances through that extension board having no cords. How is this possible? If it is possible what method might have been used.

15th April 2007, 08:25 PM	(permalink)
Sceadwian	With large amounts of power it's not possible. All wireless power transfer methods are essentially inductivly coupled for short distances or RF based, they waste exponentially increasing amounts of power as the distance increases. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

15th April 2007, 08:33 PM	(permalink)
on1aag	To boldly go where no one has gone before . . . . Hi Badar, I have one question, was it the april issue ? on1aag.

10th June 2007, 12:41 PM	(permalink)
Analog	http://www.physorg.com/news100445957.html __________________ "Everything that is done in the world is done by hope." -Martin Luther "There are two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."-Albert Einstein

10th June 2007, 05:52 PM	(permalink)
Leftyretro	I think that the RFID tags use the RF field generated by the reader to generate the DC power needed to activate the RFID card. Low power of course but it is a working tech.... Lefty