Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-27-2008, 01:56 PM   #1 (permalink)
Master EcoModder
 
Join Date: Sep 2008
Location: Texas
Posts: 632
Thanks: 0
Thanked 25 Times in 23 Posts
charge your car from radio waves?

Nikola Tesla Page, Tesla's power receiver
It sure sounds interesting. Biggest hurdle to overcome is the superconductor problem...

__________________
If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...

Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-27-2008, 02:18 PM   #2 (permalink)
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
Thanks: 0
Thanked 20 Times in 17 Posts
I had a little science kit that extracted a tiny bit of power off radio waves....

Given the energy density, you'll be hard pressed to get anything useful for your car

And remember, this is "free to me" energy - not "free energy."
__________________
Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.
  Reply With Quote
Old 10-27-2008, 09:03 PM   #3 (permalink)
Master EcoModder
 
The Atomic Ass's Avatar
 
Join Date: Oct 2008
Location: Mason, OH
Posts: 528

LeSabre - '96 Buick LeSabre Custom
90 day: 20.95 mpg (US)

RC Car - '17 Toyota Prius Two Eco
90 day: 40.29 mpg (US)
Thanks: 11
Thanked 12 Times in 12 Posts
Quote:
Originally Posted by trebuchet03 View Post
I had a little science kit that extracted a tiny bit of power off radio waves....

Given the energy density, you'll be hard pressed to get anything useful for your car

And remember, this is "free to me" energy - not "free energy."
A tiny bit being, what, however?

And energy that is being dissipated into the air should be used for something at least. It's a better use of the energy than listening to any of the useless radio stations in my area that are constantly running ads for car lots trying to sell their over-stocked, under-performing gas guzzling SUVs.
__________________
  Reply With Quote
Old 10-27-2008, 11:28 PM   #4 (permalink)
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
Thanks: 0
Thanked 20 Times in 17 Posts
Quote:
Originally Posted by The Atomic Ass View Post
A tiny bit being, what, however?

And energy that is being dissipated into the air should be used for something at least. It's a better use of the energy than listening to any of the useless radio stations in my area that are constantly running ads for car lots trying to sell their over-stocked, under-performing gas guzzling SUVs.
Enough to make crackling sounds on a piezo speaker

If a myriad of devices start drawing power off the waves, that load needs to be made up for. It's a wireless energy transfer - so if you take an additional watt, one additional watt must be provided from the transmission side.
__________________
Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.
  Reply With Quote
Old 10-28-2008, 11:50 PM   #5 (permalink)
Master EcoModder
 
The Atomic Ass's Avatar
 
Join Date: Oct 2008
Location: Mason, OH
Posts: 528

LeSabre - '96 Buick LeSabre Custom
90 day: 20.95 mpg (US)

RC Car - '17 Toyota Prius Two Eco
90 day: 40.29 mpg (US)
Thanks: 11
Thanked 12 Times in 12 Posts
Quote:
Originally Posted by trebuchet03 View Post
Enough to make crackling sounds on a piezo speaker

If a myriad of devices start drawing power off the waves, that load needs to be made up for. It's a wireless energy transfer - so if you take an additional watt, one additional watt must be provided from the transmission side.
For some reason I'm now reminded of WLW's 500kw transmitter from the 30/40's...
__________________
  Reply With Quote
Old 10-29-2008, 12:52 AM   #6 (permalink)
Master EcoModder
 
Join Date: Sep 2008
Location: Texas
Posts: 632
Thanks: 0
Thanked 25 Times in 23 Posts
Quote:
Originally Posted by trebuchet03 View Post
Enough to make crackling sounds on a piezo speaker

If a myriad of devices start drawing power off the waves, that load needs to be made up for. It's a wireless energy transfer - so if you take an additional watt, one additional watt must be provided from the transmission side.
How is pulling some power to run your car any different than dissipating the same power in the environment as far as the transmitter is concerned? Does a light bulb magically use more power just because you put up a solar panel to absorb some of the light?
__________________
If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...

Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
  Reply With Quote
Old 10-29-2008, 02:12 AM   #7 (permalink)
Lurking footless halls
 
Silveredwings's Avatar
 
Join Date: Dec 2007
Location: northeast
Posts: 249

Dark Horse - '16 Ford Mustang GT convertible Premium

Gutless Beauty - '19 Toyota Corolla SE
Thanks: 3
Thanked 3 Times in 3 Posts
Unlike a photovoltaic panel, your radio frequency receiver is a resonant circuit excited by sympathetic oscillations originating at the transmitter. Though such a circuit seems passive, it actually creates a load on the transmitter (in the same way the transformer secondary winding loads the primary).

This load is infinitesimally small but is measurable with a grid-dip meter. Of course, the amount of current is equally small (on the order of micro amps, or even pico amps). That's why a typical superheterodyne radio must have an RF amplifier followed by an IF amplifier to boost the signal strength enough to pass through a demodulator without being lost altogether. You'd die of old age long before you charged a flashlight, let alone a car battery. There's probably more energy available from parking under power lines, but it still wouldn't get you very much.

It's not technically impossible, it's just that the power is 10 to 12 orders of magnitude too small to be practical.
__________________
Any sufficiently advanced technology is indistinguishable from magic. - Clarke's Third Law
  Reply With Quote
Old 10-29-2008, 02:25 AM   #8 (permalink)
Future EV Owner
 
Join Date: Mar 2008
Location: Sussex Wisconsin
Posts: 674

Wannabe - '05 Honda Civic LX
90 day: 40.53 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
They'll make electricity from sewage first.

Poop power? Sewage turned into electricity - Green Machines - MSNBC.com
__________________
  Reply With Quote
Old 10-29-2008, 11:55 PM   #9 (permalink)
Master EcoModder
 
Join Date: Sep 2008
Location: Texas
Posts: 632
Thanks: 0
Thanked 25 Times in 23 Posts
In the link I have posted, it is possible to capture a significant amount of energy if superconductors are used.

If the power receiver isn't there, the waves will simply propagate until they are absorbed by something else. As far as the transmitter is concerned, how is it any different to have the power receiver absorb the waves as opposed to, for instance, a body of water?
__________________
If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...

Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
  Reply With Quote
Old 07-23-2009, 10:45 AM   #10 (permalink)
Master EcoModder
 
Join Date: Sep 2008
Location: Texas
Posts: 632
Thanks: 0
Thanked 25 Times in 23 Posts
The advantage is that radio wave power collection will work in the shade and at night.
I think it would be powering the cars of the future if someone manages to make it work well enough.

__________________
If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...

Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
I found another advantage to driving an ultra-low Cd car basjoos Aerodynamics 26 08-25-2012 03:15 PM
EcoModding for Beginners: Getting great gas mileage. SVOboy EcoModding Central 55 08-21-2012 12:34 AM
Win $100.00 in Free Gas! Design Contest: Ecomod my Ride XFi EcoModding Central 127 02-17-2011 01:07 AM
Alt Car Expo Los Angeles 2008 cfg83 Events & Meet-ups 2 10-14-2008 07:21 PM
My First Electric car Experience WaxyChicken The Lounge 8 09-05-2008 09:46 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com