Can electric power be transmitted wirelessly using transmitter (localized) and receiver (on the equipment)?

Question

If we can send electric energy (electricity) wirelessly first by converting into other form of energy (transformers+transmitors) and then converting it into original electric energy (receivers). This will help in creating new type of electric equipments including cars, etc.

Answer 1

Nikola Tesla has already done that..

http://en.wikipedia.org/wiki/Nikola_Tesla

Yours: Grumpy

Answer 2

No, electricity cannot be transmitted through the air, unless you are planning on having giant lightning bolts between the transmitter and receiver. The only way to "transmit" the electricity would be to use electricity to generate photons and then use those photons to generate electricity on the other end. This is very inefficient, it is much cheaper just to carry the fuel source instead of trying to transmit anything through the air.

Answer 3

William C. Brown, the leading authority on wireless power transmission technology, has loaned this demonstration unit to the Texas Space Grant Consortium to show how power can be transfered through free space by microwaves. A block diagram of the demonstration components is shown below. The primary components include a microwave source, a transmitting antenna, and a receiving rectenna.

The microwave source consists of a microwave oven magnetron with electronics to control the output power. The output microwave power ranges from 50 W to 200 W at 2.45 GHz. A coaxial cable connects the output of the microwave source to a coax-to-waveguide adapter. This adapter is connected to a waveguide ferrite circulator which protects the microwave source from reflected power. The circulator is connected to a tuning waveguide section to match the waveguide impedance to the antenna input impedance.

The slotted waveguide antenna consists of 8 waveguide sections with 8 slots on each section. These 64 slots radiate the power uniformly through free space to the rectenna. The slotted waveguide antenna is ideal for power transmission because of its high aperture efficiency (> 95%) and high power handling capability.

A rectifying antenna called a rectenna receives the transmitted power and converts the microwave power to direct current (DC) power. This demonstration rectenna consists of 6 rows of dipoles antennas where 8 dipoles belong to each row. Each row is connected to a rectifying circuit which consists of low pass filters and a rectifier. The rectifier is a GaAs Schottky barrier diode that is impedance matched to the dipoles by a low pass filter. The 6 rectifying diodes are connected to light bulbs for indicating that the power is received. The light bulbs also dissipated the received power. This rectenna has a 25% collection and conversion efficiency, but rectennas have been tested with greater than 90% efficiency at 2.45 GHz.

Answer 4

energy can of course, be transmitted wirelessly

that is how a radio works, but the amount of energy transfered is small

the problem is that transfer of this kind tends to be inefficient because of the cube law, meaning that the strength of the power "signal" diminishes with the cube of the distance

also, if we are talking about a large amount of energy transfer, interferences can be very dangerous

think about walking and driving around in a microwave oven (a common wireless energy transmitter)

Answer 5

Yes this is being done and you can buy the recever on ebay or just make one using radio shack parts. It uses the radio waves that is already in the air. It is not very strong but still works. you might have to make a bunch of them or find a way to make a big one. But yes it can be done and is being done. Oh yes it is Tesla. Here is the link. This should get you started and you can find lots more on it.

This tech is over 100 years old.

Answer 6

In theory you can transmit a lot of power if you have a huge microwave antenna for sending and receiving. I am not sure how efficient it would be because of the conversions and the dispersion of the microwave through the atmosphere.

Answer 7

Works fine for communication but not for power. Think of the wattage involved just to run a refrigerator. They say Tesla was experimenting with this idea though. Who knows what he might have come up with?

Answer 8

Yes but you are talking about very little power. Radio waves require quite a bit of amplification to even be used.

Answer 9

You get everlasting activity of a soldier and extra promotions in devil's protection stress. long term effect is-----you may no longer connect the club of angels. that's obtrusive that your want/goals/emotions take shape like a devil once you connect the corrupt forces.

Answer 10

I think SimCity had something like that. They did it through microwaves. Not sure if really plausible.