Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 4   >   >>
peralta_mike
User Rank
Rookie
re: London Calling: Forget wireless charging
peralta_mike   3/5/2013 8:22:13 PM
NO RATINGS
Everyone. Quit being so negative. All things are possible.

peralta_mike
User Rank
Rookie
re: London Calling: Forget wireless charging
peralta_mike   3/5/2013 8:20:55 PM
NO RATINGS
In fact wireless charging of electric cars will also happen. (They have buses like this at bus stops now - for a developmental version of these buses.) And the charging coils will be in the streets - this will save tons of weight as only minimal battery capacity will be needed. (An emergency small gas generator can be added to the car in case street coils are broken or not there in places.)

peralta_mike
User Rank
Rookie
re: London Calling: Forget wireless charging
peralta_mike   3/5/2013 8:17:38 PM
NO RATINGS
If done right wireless can be made efficient. Wireless charging is going to happen everywhere. It's just a matter of time. Best we do it efficiently.

krisi
User Rank
CEO
re: London Calling: Forget wireless charging
krisi   3/5/2013 4:41:58 PM
NO RATINGS
That is partially true Denis but only in cold places and only at cold times. I live in Canada (cold place by any standard) and use heating only 4 months. On top of that natural gas heating is 3x less expensive than electrical here. So I have no plans to use wireless charging while charging my iPhones to heat my house in the process anytime soon ;-)

WW Thinker
User Rank
Rookie
re: London Calling: Forget wireless charging
WW Thinker   3/5/2013 3:35:23 PM
NO RATINGS
How above the EM energy emitted from the charging pad, especially inside a car? Can anyone tell me that the EM wave running freely inside the car cabin will not have any negative health effect upon the people inside the car? In particular, some of these people could be infants or babies. If multiple power hogs have to be charged at the same time, the energy of the EM wave running around are substantial. I feel that the wireless charging is like repeating the "no new wires, wireless" which the whole tech world was evangelizing 12 years ago!

Denis.Giri
User Rank
Manager
re: London Calling: Forget wireless charging
Denis.Giri   3/5/2013 8:31:46 AM
NO RATINGS
This power-saving business is a big joke to people who are heated by electric heaters. During winter, when energy is scarce (hydro-electric is off due to water freezing, solar energy is low, and power requirements are high), people who use electricity to heat their homes and unplug their chargers or turn off their lights will only increase the power consumption of their heaters. In the end, you'll want N kW of power to heat up your home at all times, and whether that power comes from your electric-heaters or various plugged-in electronic devices will not change a thing: all energy ends up as heat. And in summer, energy is abondant enough (solar is more efficient, hydroelectric is on, and power demand is low) for you to be able to waste some of it. This power-saving business only applies to people who heat their homes with something else than electricity, and in my country, gaz-based central heating has become more or less illegal in new buildings due to explosion hazard, so all new buildings are electric-heated. My point: as long as we don't look at the full picture, "saving energy" by turning off a light bulb has no meaning.

KRS03
User Rank
Rookie
re: London Calling: Forget wireless charging
KRS03   3/5/2013 1:52:42 AM
NO RATINGS
Well said, iniewski. The world is not here for us to exploit. Life goes on without you. M9 is likely of the XYZ gen., not an insightful bunch.

krisi
User Rank
CEO
re: London Calling: Forget wireless charging
krisi   3/4/2013 9:09:06 PM
NO RATINGS
Sure, energy is here to improve our lives...but we can't afford to ruin the planet in the process as that would eventually ruin our lifes

jmoore852
User Rank
Rookie
re: London Calling: Forget wireless charging
jmoore852   3/4/2013 7:18:54 PM
NO RATINGS
As I look at the morass of charging wires running around my office to various objects, there's no way I'm going to unplug all of them when they are charged up, because the net result will be too many ending up uncharged, reducing battery life and ultimately costing a whole bunch of energy to replace. And, unplugging the chargers when a device is charged means adding a slight hazard (multiply this by hundreds of millions of people and it's not so slight): that of electrical shock and that of fire from disturbing the outlet strip and it's environment. This whole obsession with energy efficiency has reached the level of a religion, with its tenets unquestioned. Energy generation is there to improve our lives, and the piddly energy savings from unplugging wall warts (or not using the less efficient near field chargers) is just not enough to justify the effort except for either the innumerate or the energy obsessed. If the near field charging reduces the clutter (not to mention the fire hazard), I'll use it even if it's 50% efficient.

Traces
User Rank
Rookie
re: London Calling: Forget wireless charging
Traces   3/4/2013 6:45:01 PM
NO RATINGS
Bad logic: wireless chargers consume at least much as wall warts when plugged in, and if their value proposition is that it's easy to just drop your phone on a pad (i.e., the wireless charger is always plugged in), then it's even worse.

<<   <   Page 2 / 4   >   >>


Most Recent Comments
Steve Manley
 
engineers
 
Weapon
 
rick merritt
 
rick merritt
 
Loser99
 
Aeroengineer
 
Aeroengineer
 
Aeroengineer
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
Post a comment
An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely unfamiliar. ...

Max Maxfield

What's the Best Traveling Toolkit?
Max Maxfield
13 comments
A few years ago at a family Christmas party, I won a pocket knife as part of a "Dirty Santa" game. This little scamp was a Buck 730 X-Tract. In addition to an incredibly strong and sharp ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
10 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
41 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Top Comments of the Week
Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)