Supercapacitors to improve mobile battery efficiency

 

Prototypes absorb and reuse wasted energy.

Researchers in New Zealand are developing supercapacitors that absorb and reuse wasted energy from mobile phone and laptop batteries.

The technology could extend the battery life of mobile devices by boosting the efficiency of their traditional power supplies.

Supercapacitors are very dense capacitors that are capable of storing and discharging large amounts electrical energy very rapidly.

They are often based around activated charcoal or other highly porous materials, and are commercially used as energy storage devices in electric vehicles, or memory backups for IT equipment.

Currently, mobile devices use either switch mode systems or linear power supplies, which deliver high quality power but at low efficiency, electrical engineer Nihal Kularatna explains.

But with modern electrical equipment operating at ever-lower voltages, which switch mode power supplies don't handle very well, Kularatna expects linear systems to find many applications if their efficiency is improved.

"We are using supercapacitors to improve the efficiency of linear power supplies," said Kularatna, of the Waikato University.

The university has filed patents for two working prototypes that use a supercapacitor to improve battery efficiency.

The researchers report having almost doubled the efficiency of a low dropout regulator circuit from 42 percent to 80 percent by using the supercapacitor concept.


Supercapacitors to improve mobile battery efficiency
 
 
 
Top Stories
Australia passes data retention into law
Mammoth last-ditch effort by Greens, indies knocked back.
 
ATO to kill off e-Tax
Veteran software to be replaced by more modern myTax.
 
CSC embroiled in CBA IT bribery scandal
ServiceMesh named in alleged dodgy dealing.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Xero now includes an inventory function built-in
Mar 26, 2015
Xero has added inventory and other major new features to the latest release of its cloud ...
Apple reveals its new MacBook
Mar 13, 2015
Replacing the MacBook Air as Apple's thinnest laptop, the new MacBook comes packed with features.
Xero has released a new version of its app for the iPad
Mar 6, 2015
iPad-wielding Xero users can now take advantage of a new version of the iOS app for the cloud ...
Microsoft is offering Azure for Disaster Recovery to Australian SMBs
Feb 10, 2015
If you haven't talked to your IT provider about disaster recovery, it might be worth discussing ...
The 2015 Xero Roadshow is on: here are the locations and dates
Feb 6, 2015
The 2015 Xero Roadshow kicked off this week - see where you can attend at locations around ...
Latest Comments
Polls
Do you support the Government's data retention scheme?

   |   View results
Yes
  8%
 
No
  92%
TOTAL VOTES: 1270

Vote