Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


robocat

94 posts

Master Geek


#119097 20-May-2013 15:32
Send private message

My google foo is failing me... There must be a reason for the change, but I can't find it!

Older laptop power supplies used the common PC "kettle" plug/socket (C13/C14) but newer ones seem to use the cloverleaf/mickey-mouse plug/socket (C5/C6 - http://en.wikipedia.org/wiki/IEC_60320 ).

Anyone know?



Filter this topic showing only the reply marked as answer Create new topic
ubergeeknz
3344 posts

Uber Geek

Trusted
Vocus

  #822487 20-May-2013 15:39
Send private message

The rated current for the cloverleaf is 2.5A vs the IEC connector rated at 10A.

For one, there's probably less copper required to make the connector itself.  Second, the lower current requirement should allow for the use of thinner cable.

 
 
 

Shop Mighty Ape for electronics, games, computers books and more (affiliate link).
robocat

94 posts

Master Geek


  #822488 20-May-2013 15:43
Send private message

Sooooo obvious - saves a few cents on copper (and I even inkled it might have something to do with current rating but me dummy didn't look at the correct column!).

Thanks heaps!

toyonut
1508 posts

Uber Geek


  #822500 20-May-2013 15:53
Send private message

I would say it is also more compact so saves some space on the adapter and allows it to be smaller and more travel ready.




Try Vultr using this link and get us both some credit:

 

http://www.vultr.com/?ref=7033587-3B




graemeh
2078 posts

Uber Geek


  #822510 20-May-2013 16:18
Send private message

I have a very old (approx 1997) laptop that used the "figure 8" connection so not using the IEC connector is not a new thing.

robocat

94 posts

Master Geek


  #822533 20-May-2013 16:45
Send private message

By my calculation, for 10A cable the copper is about 30 cents versus 15 cents for 2.5A.

Approximations: cable is 1 metre long, cable is three core, copper is NZD10 per kg, individual wire core cross sections are 1mm² versus 0.5mm² as per http://www.epanorama.net/documents/wiring/wire_resistance.htl

richms
26563 posts

Uber Geek

Trusted
Subscriber

  #822643 20-May-2013 20:12
Send private message

All those savings add up, the thing is in NZ the smaller cables all have to be 0.75mm² anyway, so there isnt the savings you would hope for over the 1mm² needed for a 10 amp cable.

Its about time the IEC did another slimmer plug IMO, my dell power supplies all have a bump on the end to accomodate the cloverleaf socket. if they had a figure 8 they could be thinner, but I guess they want to save a little bit by making it an earthed power supply vs double insulated. Also a 2 pin would let them use a smaller mains plug on the other end.




Richard rich.ms

Lias
5347 posts

Uber Geek

ID Verified
Trusted
Lifetime subscriber

  #822658 20-May-2013 20:43
Send private message

Toshibas used a figure 8 during the early-mid 2000's







I'm a geek, a gamer, a dad and an IT Professional. I have a full rack home lab, size 15 feet, an epic beard and Asperger's. I'm a bit of a Cypherpunk, who believes information wants to be free and the Net interprets censorship as damage and routes around it.




lxsw20
3231 posts

Uber Geek


  #822691 20-May-2013 21:37
Send private message

Apple still kind of do, just with a funny looking earthed plug buit in.

Filter this topic showing only the reply marked as answer Create new topic





News and reviews »

Synology Introduces BeeStation
Posted 23-Feb-2024 14:14


New One UI 6.1 Update Brings Galaxy AI to More Galaxy Devices
Posted 23-Feb-2024 10:50


Amazon Echo Hub Available in New Zealand
Posted 23-Feb-2024 10:40


InternetNZ Releases Internet Insights 2023
Posted 20-Feb-2024 10:31


Seagate Adds 24TB IronWolf Pro Hard Drives for Multi-user Commercial and Enterprise RAID Storage Solutions
Posted 19-Feb-2024 16:54


Seagate Skyhawk AI 24TB Elevates Edge Security Capacity and Performance
Posted 9-Feb-2024 17:18


GoPro Releases Quik Desktop App for macOS and Introduces Premium+ Subscription Tier
Posted 9-Feb-2024 17:14


Ring Introduces New Ring Battery Video Doorbell Pro
Posted 9-Feb-2024 16:51


Galaxy AI Transforms the new Galaxy S24 Series
Posted 18-Jan-2024 07:00


D-Link launches AI-Powered Aquila Pro M30 Wi-Fi 6 Mesh Systems
Posted 17-Jan-2024 20:02


Newest LG 4K Lifestyle Projector Doubles as Art Objet
Posted 9-Jan-2024 15:50


More LG Smart TV Owners Set To Enjoy the Latest webOS Upgrade
Posted 9-Jan-2024 15:45


Panasonic Announces the Z95A and Z93A With Fire TV Built In
Posted 9-Jan-2024 15:30


Amazon Echo Pop Review
Posted 8-Jan-2024 14:22


Samsung Tab S9 FE Review
Posted 17-Dec-2023 08:26









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







GoodSync is the easiest file sync and backup for Windows and Mac