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circuit design help no powe in charger

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hitman1988

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circuit design help

hi i wanna to design a mobile phone charger with no power input ,but we use the EM waves in space that recieved by an antenna to electric power to charge the mobile th principle is to use the output power from antenna and then make it input to a full wave rectifier and then to diode and then to VOLTAGE DUPLEX but i have nothing about this circuit . please if you have the circuit design share it with me
 

Re: circuit design help

Unless you live right underneath a high power transmitter mast I would forget this idea right away. If you really do live under such a transmitter, it would be easier to plug your charger into their mains supply, they wouldn't notice the extra power you were using.

Brian.
 

Re: circuit design help

it's just a college project . nothing more than that . so if you wanna help ,wellcome
. if you not also thank you.
 

circuit design help

Hi hitman1988,
it`s not a question of somebody wish to help or not, this is basic of physics....
As betwixt told to you:
you must have a powerful Transmitter as your neighborhood!
You can not build a perpetum mobile (or "free energy generator"):-(, you need to have lot of energy around/in field that you can than, more or less, converse!

Of course, you can check out for example these address: www.wirelesspowerconsortium.com
Good luck!
K.
 

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    hitman1988

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Re: circuit design help

I did not mean offense.

If you build a simple crystal set receiver, tune it to the nearest strongest station you can find and measure the diode current you will find it is only one or two µA and the voltage is only a few µV. The station is probably transmitting a few kilowatts. The amount transferred to the antenna is very, very, very small and not usable as a power source for other equipment.

Where high power IS intentionally transferred wirelessly, the transmitting antenna is specially shaped to concentrate the power in a small confined area and the range is usually no more than a few cm.

Brian.
 

Re: circuit design help

hi
thanks for replying my post i just try to tell that to my teacher in my college . but he never listen to that . he just want me to do that .
thanks for every thing
 

Re: circuit design help

You can design a circuit which theoretically works but practically you have no chance to see it working.
 

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    hitman1988

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Re: circuit design help

hi
tahnx for the circuit diagram
i will design it and wish it works
wish me luck
 

Re: circuit design help

This circuit is basic RF receiver you must allready know. As I told you it will never supply your mobile from the existing EM waves arround but you can listen to some AM transmitter.
 

Re: circuit design help

thanks all for being very helpfull
 

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