Interesting News! Go Wireless With Electricity! Read On To Know The Power Transmission!
Wireless electricity is quite literally the transmission of electrical energy without wires. People often compare the wireless transmission of electrical energy as being similar to the wireless transmission of information, for example, radio, cell phones, or wi-fi internet. The major difference is that with radio or microwave transmissions, the technology focuses on recovering just the information, and not all the energy that you originally transmitted. When working with the transport of energy you want to be as efficient as possible, near or at 100 percent.
Wireless electricity is a relatively new area of technology but one that is rapidly being developed. You may already be using the technology without being aware of it, for example, a cordless electric toothbrush which recharges in a cradle or the new charger pads that you can use to charge your cell phone. However, both of those examples while technically wireless do not involve any significant amount of distance, the toothbrush sits in the charging cradle and the cell phone lies on the charging pad. Developing methods of efficiently and safely transmitting energy at a distance has been the challenge.
How Wireless Electricity Works
There are two important terms to explain how wireless electricity works in, for example, an electric toothbrush, it works by "inductive coupling" and "electromagnetism". According to the Wireless Power Consortium, "Wireless charging, also known as inductive charging, is based on a few simple principles. The technology requires two coils: a transmitter and a receiver. An alternating current is passed through the transmitter coil, generating a magnetic field. This, in turn, induces a voltage in the receiver coil; this can be used to power a mobile device or charge a battery."
To explain further, whenever you direct electrical current through a wire there is a natural phenomenon that occurs, that a circular magnetic field is created around the wire. And if you loop/coil that wire that wire's magnetic field gets stronger. If you take a second coil of wire that does not have an electrical current passing through it, and place that coil within the magnetic field of the first coil, the electric current from the first coil will travel through the magnetic field and started running through the second coil, that's inductive coupling.
Wireless power transmission as an alternative to transmission line power distribution (our current system of electric power distribution) was first proposed and demonstrated by Nikola Tesla. In 1899, Tesla demonstrated wireless power transmission by powering a field of fluorescent lamps located twenty-five miles from its power source without using wires. As impressive and forward-thinking as Tesla's work was, at that time it was actually cheaper to build copper transmission lines rather than build the type of power generators that Tesla's experiments required. Tesla ran out of research funding and at that time a practical and cost-efficient method of wireless power distribution could not be developed.