2013年11月28日星期四
2nd Generation nexus 5 Inductive Wireless Charger Qi-compatible 120% Fast Charge and 300% Effective Range Designed for Nexus4 Nexus 4 Nexus5 Nexus 5 Lumia1520 Lumia1020 Lumia920 Lumia 1520 1020 920 (Nexus4/5&lumia) Power: 5w = 5v 1a Input: Dc 12v 1a (Dc Adapter) Size: 130*71.4*14.6 Weight: 117g Transmit Current: 700ma-1000ma 1% Charge Time (Nexus4): 2min Induction Response: 1sec Multiple Ac Plug Optional(choose 1, or Us Plug Default), Best Wireless Charger for Travelling. HiPOWERPLAY
NICOLA TESLA
Nikola Tesla was a brilliant visionary, physicist, inventor and electrical engineer of the late 19th and early 20th centuries. He is most famous for having invented the alternating current (AC) electrical system. The AC system, also known as the “Polyphase AC System," includes alternating current, AC generators, motors and a power transmission system. They comprise a complete system of generators, transformers, transmission lines, motors and lighting, upon which the modern world is built.
Nikola Tesla was born at midnight, July 9, 1856 in Lika, Croatia. Tesla’s parents were Serbian. His father was a stern Orthodox priest, gifted writer and poet. The father’s desire was for Nikola to enter the priesthood. Tesla's mother was a woman of many talents who created, among other things, a mechanical eggbeater. Tesla’s creative instincts evidently sprang from his mother.
Tesla was educated at the Austrian Polytechnic School at Graz and the University of Prague, Czechoslovakia, where for four years he studied mathematics, physics and mechanics. Endowed with a remarkable memory, Tesla learned to speak six languages and could perform calculus equations mentally while still a student. Not only did he possess a photographic memory, he was able to use creative visualization with an uncanny yet practical intensity. The unit of “Magnetic Flux Density” is officially called a “Tesla."
Tesla arrived in New York at age 28, nearly penniless, with a letter of recommendation addressed to Thomas Edison, for whom he worked a short time. Edison’s DC power station in Lower Manhattan had strung sagging wires throughout the district, which was hungry for electric light.* Tesla quickly improved Edison’s systems, but Edison refused to pay him the promised $50,000. Tesla quit.
Approached by a group of investors while digging ditches to support himself, Tesla received funding to perfect a low-cost arc lamp. While the invention was successful and the investors made money, Tesla ended up with no pay and a stack of worthless stock certificates.
A.K. Brown of the Western Union Company agreed to invest in Tesla's idea for an AC motor. In a small room a short distance from Edison's office, Tesla opened his first of several laboratories. He successfully constructed and patented his AC Polyphase Electrical System. Tesla’s superior AC system directly competed with Edison’s DC system.
Edison, being more famous and better connected, fought to discredit Tesla’s inventions and success. Tesla won the most important battles, but Edison won the propaganda war. That may explain why relatively little is written or taught about Tesla to this day.
The AC system comprises seven patents awarded to Tesla in November and December of 1887. So original were the ideas that the patents were issued without a successful challenge, and would turn out to be among the most valuable patents of all time.
In 1885, George Westinghouse, head of the Westinghouse Electric Company, (Edison and General Electric’s chief competitor), bought the patent rights to Tesla's system of dynamos, transformers and motors. Westinghouse used Tesla's alternating current system to light the World's Columbian Exposition of 1893 in Chicago.
The Tesla Coil, invented in 1891, is still in use today, stepping up household electrical current to very high frequencies and voltages. High frequencies allowed Tesla to develop the first neon and fluorescent illumination, and the first X-Ray photographs. The Coil is also used in radio and television sets, and such other electronic equipment as computer monitors. Other Tesla inventions include the automobile speedometer and ignition system.
Such names as Thomas Edison, Alexander Graham Bell, Guglielmo Marconi andAlbert Einstein are more familiar a century later, but the achievements of Edison, Bell and Marconi remain in the practical world only. The sole similarities between Tesla and Edison were that both men were driven and focused upon their work and both required little sleep.
Both Tesla and Einstein described their thought processes as more visual than word based. For his part, Edison said of his own mental processes, "Genius is one percent inspiration and 99 percent perspiration."
Some historians of science believe Tesla ranks in the same class as Albert Einstein and Leonardo daVinci. Like daVinci, Tesla is credited with both practical and theoretical accomplishments. Among Tesla’s 325 world patents, plus physics theories, are some of the fundamental technologies and ideas of the 20th century, and seeds for the future achievements of the human race.
Wireless transmission of energy became Tesla’s lifelong obsession when, in 1890, he discovered he could light a vacuum tube through the air at a distance. He wrote in Century Magazine in 1900:
"...communication without wires to any point of the globe is practicable. My experiments showed that the air at the ordinary pressure became distinctly conducting, and this opened up the wonderful prospect of transmitting large amounts of electrical energy for industrial purposes to great distances without wires . . . its practical consummation would mean that energy would be available for the uses of man at any point of the globe.
I can conceive of no technical advance which would tend to unite the various elements of humanity more effectively than this one, or of one which would more add to and more economize human energy."
Practical applications of Tesla’s AC electrical and radio broadcast patents brought modern science and engineering to the technological age. They form the world’s “power grid," and lie at the root of all the following technologies: robotics, radio and television broadcasting, remote control, radar and hybrid-fuel automobiles. Tesla's bladeless disk turbine engine, when coupled with modern materials, proved to be among the most efficient motors ever designed.
Tesla’s inventions and discoveries led to the latest in laser and particle-beam weaponry, and may resolve the looming world oil crisis. Answers to Tesla’s theoretical questions are as elusive as Einstein’s “Theory of Everything," yet promise real technological advances when technology catches up.
Examples of advanced applications and ongoing research, based on Tesla’s patents and theories, include remote control of pilotless spy drones, and NASA’s planetary missions using such robots as the little “Rover” on Mars.
Secret or “black” projects based upon Tesla’s work include Ronald Reagan’s “Star Wars” defense shield, which became the “Shiva” project, and Electromagnetic Low Frequency (ELF) weather modification, in which the ionosphere is charged by radio wave transmissions in the low frequency range of 10 to 80 hertz.
Tesla also discovered that he could cause both positive and negative ionization of the atmosphere by manipulating radio frequencies. Evidence indicates that this technology also has the capability to manipulate human behavior and mood patterns.
Nikola Tesla died alone and nearly penniless on January 7, 1943, in a New York City hotel room. He was 86 years old. More than 2,000 people attended the funeral. Tesla’s papers and notebooks were retained by the federal government's Alien Property Custodian office, most of which were released years later to the newly created Tesla museum in Belgrade,Yugoslavia. Many of Tesla’s experiments and achievements were recorded only in Tesla’s mind, and they died with him.
In July 1934, Tesla wrote:
"The scientific man does not aim at an immediate result. He does not expect that his advanced ideas will be readily taken up. His work is like that of the planter for the future. His duty is to lay the foundation for those who are to come, and point the way. He lives and labors and hopes."
*Brooklyn residents became so adept at dodging shocks from electric trolleys and fallen wires, that their baseball club was dubbed theBrooklyn Trolleydodgers.
2013年11月18日星期一
How to extend wireless charge to my cellphone?
We've got several requests from friends who use non qi wireless receiver built-in cellphones, to share what we can do about those phones.
OK, let's get started.
there are several kinds of receiver can be bought on amazon,
obviously, it's used for different cellphones.
the first one, is an extend qi wireless receiver, designed for Samsung Galaxy S4, Galaxy cellphones has designed 2 extended contact for wireless charge(acturally it's 4 contacts, 2 for NFC) siince Galaxy S3 launched. So you can easily get a receiver for your cellphone on Amazon, only confirm the receiver matches your phone type. S3, S4, N2, N3 all have different recevers. So what's next? Pretty easy.
Then iPhone of course. You can purchase an iPhone wireless charge case easily on Amazon. Then just put your iPhone inside, done. It seems to make your iphone even longer, but necessary. As it's very hard to insert any coil or cable inside, it's already very tite. So, just treat it a special case!
The last one seems to be universal! micro USB as you see. so, just plug in to your cellphone, and settle it, with glue or anything else. it's done.
it's just not that hard.
2013年11月17日星期日
How to choose a wireless charger? -- forward
Wireless charging sounds great. No cables bother us seems pretty nice. So, let's get one for our selves.
At first, we need to know more about our cellphones. Any cellphone with qi wireless charge ability (built-in qi receiver, will be mentioned on package), otherwise you'll need to get an extended receiver for your cellphone. check the list below:
for iPhone:
for iPhone 5 --- External(need to install the Qi receiver back case)
for iPhone 4/4S --- External(need to install the Qi receiver back case)
for iPhone 4/4S --- External(need to install the Qi receiver back case)
for Samsung:
S3(9300/9308) --- External(reserved interface,need to install the Qi receiver)
Note 2 (7100/7102) --- External(reserved interface,need to install the Qi receiver)
S4 --- External(reserved interface,need to install the Qi receiver)
Note 2 (7100/7102) --- External(reserved interface,need to install the Qi receiver)
S4 --- External(reserved interface,need to install the Qi receiver)
for Nokia Lumia:
920 --- Qi receiver built-in
928 --- Qi receiver built-in
925 --- External(reserved interface,need to install the Qi receiver)
720 --- External(reserved interface,need to install the Qi receiver)
820 --- Built-in(need to replace the battery cover)
1020 --- Qi receiver built-in
1520 --- Qi receiver built-in
920 --- Qi receiver built-in
928 --- Qi receiver built-in
925 --- External(reserved interface,need to install the Qi receiver)
720 --- External(reserved interface,need to install the Qi receiver)
820 --- Built-in(need to replace the battery cover)
1020 --- Qi receiver built-in
1520 --- Qi receiver built-in
for HTC:
Droid DNA --- Built-in
Butterfly --- Built-in
Inceredible 4G LTE --- Built-in
8X --- Built-in
Butterfly --- Built-in
Inceredible 4G LTE --- Built-in
8X --- Built-in
for Google:
Nexus 4 --- Built-in
Nexus 5 --- Built-in
Nexus 7 --- Built-in
Nexus 5 --- Built-in
Nexus 7 --- Built-in
for LG:
D1L --- Built-in
LTE2 --- Built-in
LTE2 --- Built-in
Google, LG, and Nokia all has their own qi wireless charger, but the price is high and only a few choices provided. 3rd party wireless charger, such as ihave and HiPOWERPLAY, also have their own. You can easily purchase one amazon.
for cellphones without QI receiver built-in, please check our article: How to extend wireless charge to my cellphone?
How can we know the quality of it? Honesty, we can not guarantee you which one or which brand is absolutely great, that'll be a lie. But we can get more information from price, major components, market position, and customer review.
Price: not much to say. mostly you'll get what you paid for, besides cheated.
Major components: Inductive coupling - coil, controller IC and power source
Inductive coil is the key to transfer power between electric and magnetic, a large currence goes through it when charging. it produces most heat and control the inductive range, which decide where to plate your phone, and how far it can work, and the quality also controls the major power transfer efficiency. And, The best QI inductive coil supplier is TDK from Japan, Google and LG's wireless charger has it's first generation coil inside. It just launched the 3 coil combination solution, which has a great improvement.
Controller IC is another key technology, which decide the frequency, noise, currence while the devide is working. An inferior IC may cause electromagnetic wave which effect the signal of your cellphone. TI from US, and Samsung from Korea are 2 best chip supplier in this area.
Power source: there are always energy wast in electric, a better power source can get you more power at first. 5W from USB is not enough for wireless charging, except you can spend 8 or 10 hours to charge a phone. 10W is the least power requirement. So, check the power source carefully, or you may get something you do not want to use again.
Customer review: 1000 words from the seller, can not match 1 word from a customer. so choose one with good customer review.
more:
2013年11月16日星期六
How does wireless charge work?
Wireless charging seems to be a new and fashion technology, cool and modern. But truthfully , this technology has been used for over 100 years in other areas, sure you’ve heard its name: TRANSFORMER
How does a transformer work? I’m sure you’ve learned on your physical class. Don’t remember? OK, check the picture below, it’ll help you understand.
This is a simple sketch map for the theory of transformer. Power transfer in 3 steps Electricity à Magnetic à Electricity. This is exactly how wireless charge works.
We have a transmitter and a receiver in every wireless charge situation. Only they are separated in a charge pad(transmitter) and a cellphone(receiver).
This seems simple, but it’s not. The most important places in this technology are:
1. Power --- transfer enough power for loader
2. Distance --- increase transfer distance
3. Efficiency --- decrease waste energy
4. Target --- recognize transfer target
5. Heat --- decrease heat while transfer
We now can get wireless power in a few situations, such as some electric vehicle, and cellphones. We believe that in the future, thank to our scientists and engineers’ brilliant idea and hard working, we may get rid of all cables and have unlimited power.
David
more about wireless charger:
http://www.amazon.com/gp/product/B00GPG8X5M
http://www.hipowerplay.com/product.php?id_product=96
http://www.hipowerplay.com/product.php?id_product=96
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