new idea for EM waves lovers

[vasudevan.p]

I have an idea of extracting power from the EM waves which happens to be in the space .Without any power supplies in the circuit I planning to extract power fro EM waves such as FM,AM etc..which is then used for charging a battery which would be used later.

 

[pike]

good luck with it...wake me up when the battery is fully charged.

seriously just how much power do you think is required to power a battery. An easier solution is to use a solar panel...

good luck anyway.

 

[McGuinn]

Using an area the size of a foot-ball pitch to catch waves, you could reasonably expect to recharge an AA batery in approx 16 hrs! :wink:

 

[neil_m23]

What is Light ?

Use light waves ( is it really wave or beam ?? :?: :?: )
Whats light? find out ? EM or what?
then u'll get whether ur technique/idea is new or what ??

regards,
Neil.

 

[tansis]

Don't dismiss this idea as completely mad, the notion of RF powered devices is gaining ground amongst the Nanotech community at least.
Tesla thought he was on a winner as well.

 

[vaineo]

why don't you combine a bunch of different methods into one charger, use EM waves, and solar power to do the same job. Then it can charge all day and slowly at night.

 

[hotwaterwizard]

Think about this:
A crystal Radio picks up radio waves without using any power. It then puts audio into a tiny earphone.
What is audio?
AC Pulses at different frequencies.
Why not make a few Crystal Radios then rectify ihe outputs and charge a battery for free.
Well almost Free less the cost of all those parts.

 

[Nigel Goodwin]

Don't dismiss this idea as completely mad, the notion of RF powered devices is gaining ground amongst the Nanotech community at least.
Tesla thought he was on a winner as well.

Yes, it's hardly a new idea - I've got a circuit somewhere from the early 70's for a transistor radio that's powered by rectifying the RF from a more powerful station.

 

[tansis]

Tunining the power reciever to the same freaquency as the domestic AC supply might be worth a try, handy if you live near the big high voltage pylons I would think. Now back in the seventies a forward thinking gentleman by the name of Glaser was an advocate of microwave power transmission from space, ok, none of us here have the cash to to go that far, however the number of high freaquency radio sources is on the increase as mobile telephone coverage expands.

 

[john1]

Hi,

I recall seing a small allotment site many years ago,

(for those who don't know that term, its a plot of land set
aside by the local authority for use by local folk who rent
plots to grow stuff for themselves, usually veg/flowers)

and mentioned to someone there about the lights in one or
two huts, they seemed to be left on for a long time, surely
the batteries must be costing someone a bit much.

These places don't normally have any mains electricity.

I found out later, that the lights i wondered about were
actually powered by a close nearby local radio transmitter,
some folk had made loops of wire around the inside of their
huts, and fed small filament lamps.

The company running the transmitter had found out about this,
and they had altered the arrangements on their transmitting
ariel, so that this no longer worked.

Also, my parents had a crystal set on their house-boat many
years ago, and when in the right place they could both listen
to the BBC directly from a loudspeaker, not loud so they told
me, but quite audible by them both when sitting by the set.

I have often wondered about charging batteries from unusual
sources, although i've never tried radio waves. I have wondered
about earth currents, but from the few tests i have done they
seem very variable. The highest i have personally measured was
about twenty volts, i think that was near a hospital (?)
maybe they had their own substation ... ?

Earth currents seem to be fairly low impedance but are usually
only a few volts, maybe a small transformer could step up to
charge a battery. I might look at that again.

I have heard that some people who live on boats near pylons
can get strip lights to work on their boats. Where i've seen
this before, they haven't lit properly, just dimly and flicker.
But maybe some people have put ariels or something on them.

Regards, John

 

[slodown]

one large capacitor

**broken link removed**
supposed capacitor from aerial wire, spark plug(diode), and coil to charge battery